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(AB Allen-Bradley 


8720MC Regenerative 
Power Supply 


Installation Manual 


Automation 





Important User 
Information 


Because of the variety of uses for the products described in this publication, 
those responsible for the application and use of this control equipment must 
satisfy themselves that all necessary steps have been taken to assure that each 
application and use meets all performance and safety requirements, including 
any applicable laws, regulations, codes and standards. 


The illustrations, charts, sample programs and layout examples shown in this 
guide are intended solely for purposes of example. Since there are many 
variables and requirements associated with any particular installation, 
Allen-Bradley does not assume responsibility or liability (to include 
intellectual property liability) for actual use based upon the examples shown 
in this publication. 


Allen-Bradley publication SGI-1.1, Safety Guideline for the Application, 
Installation and Maintenance of Solid-State Control (avialable from your 
local Allen-Bradley office), describes some inportant differences between 
solid-state equipment and electromechanical devices that should be taken 
into consideration when applying products such as those described in this 
publication. 


Reproduction of the contents of this copyrighted publication, in whole or 
part, without written permission of Rockwell Automation, is prohibited. 





or circumstances that can lead to personal injury or death, 


^ ATTENTION: Identifies information about practices 
property damage, or economic loss. 





Attention help you: 
* identify a hazard 
* avoid the hazard 


* recognize the consequences 


Important: Identifies information that is especially important for successful 
application and understanding of the product. 


European Communities 
(EC) Directive 
Compliance 


If this product has the CE mark it is approved for installation within the 
European Union and EEA regions. It has been designed and tested to meet 
the following directives. 


EMC Directive 


This product is tested to meet the Council Directive 89/336/EC 
Electromagnetic Compatibility (EMC) by applying the following standards, 
in whole or in part, documented in a technical construction file: 


* EN 50081-2 EMC - Generic Emission Standard, Part 2 - 
Industrial Environment 


* EN 50082-2-EMC - Generic Immunity Standard, Part 2 - 
Industrial Environment 


This product is intended for use in an industrial environment. 


Low Voltage Directive 


This product is tested to meet Council Directive 73/23/EEC Low Voltage, by 
applying the safety requirements of EN 61131-2 Programmable Controllers, 
Part 2 - Equipment Requirements and Tests. For specific information 
required by EN 61131-2, see the appropriate sections in this publication, as 
well as the Allen-Bradley pulbication Industrial Automation Wiring and 
Grounding Guidelines For Noise Immunity, publication 1770-4.1. 


This equipment is classified as open equipment and must be mounted in an 
enclosure during operation to provide safety protection. 


Table of Contents 


Contents of This Chapter 1 
Manual [VOGT CHEN Caesa con tato ans dH oh te Rc tonta tcd 1-1 
Finding Information sienen iaa 1-1 
Assumptions About the Audience .......................... sese 1-2 
Notes on Handling the 8720MC-RPS Regenerative Power 
iUe eT 1-3 
About 8720MC-RSP Chapter 2 
Regenerative Power Model Numbers of the 8720MC-RPS Regenerative Power 
Supply Supply and its Accessories ...................... senes 2-1 
Power: Faing eiai dsanian donna nine! 2-2 
Appearance of the 8720MC-RPS Regenerative Power Supply .. 2-2 
Appearance of Model 8720MC-RPS027 and 
8720MC-RPS065 arhan neeesser ennaint aenda 2-2 
Appearance of Model 8720MC-RPS190 eee 2-4 
Main Components and Locations .......................ssssees 2-5 
Terminal Blocks on the Main Circuit ........................ sss 2-10 
Main Power Terminal Block (TB1) for Model 8720MC- 
RPS027 and 8720MC-RPS065................ sss 2-12 
Control Power Terminal Block (TB2) for Model 8720MC- 
RPS027 and 8720MC-RPS065................ sse 2-12 
Mainl Power Terminal Bar for Model 8720MC-RPS190 ........ 2-13 
Control Power Terminal Block (TB2) and Control Terminal 
Block (TB4) for Model 8720MC-RPS190 .............................. 2-13 
Regulator Board... pep Ea RR HERE RHEE 2-14 
Jumpers and Switches ..................... sse 2-15 
Sequence Signal Terminal Block (TB3) ................................. 2-17 
Chapter 3 
Installation installation: SILO ta cor m putet each DRE Ro v tc o PLE E 3-1 
Environmental Conditions to be Met ...........................ssss 3-1 
Required Total Área ...................... sse 3-2 
Recommended Air Flow Clearance „n... 3-7 
Notes on Installation ..................... sees 3-7 
u Chapter 4 
Wiring Recommended Wire Sizes .......ccsssssssessssseesssssseeessseeesssseeseesseesesen 4-1 


Recommended Wire Sizes for Power Wiring to the Main 

Power Terminal Block (TB1) and the Main Power Terminal 

Bars «enean user mit ere ORI UD E 4-2 
Recommended Wire Sizes for Power Wiring to the Control 

Power Terminal Block (TB2) and the Control Terminal 


Block (B4) zi Sui Ret AR eter d eee tes 4-2 
AC Input Power Wiring fot Model 8720MC-RPS027 and 
8720MG-RPS065.........:: e diae detis 4-3 
When Model 8720MC-RPS027 or 8720MC-RPS065 is 
operated in the Power Regeneration Mode only ................... 4-7 
When Model 8720MC-RP S027 and 8720MC-RPS065 are 
adapted to Capacitors having large capacity ......................... 4-9 


Installing Circuit Breaker .........................se 4-11 


ii Table of Contents 


Start and Adjustment 


Operation Panel 


Parameters 


Installing Main Magnetic Contactor ...........................esesss 
Installing Reactor ........................ een 
Installing Varistor ciudati a i ai 
Installing Harmonic Filter............................ene 
Installing Input Fuses .................... nn 
Installing Line Filters ....................... nnna 
Bus Bar and Output FUSES ..................sssssee 
AC Input Power Wiring for Model 8720MC-RPS190 ................... 
When Model 8720MC-RPS190 is operated in the Power 
Regeneration Mode only ....................... eee 
When Model 8720MC-RPS190 is adapted to Capacitors 
having large capacity ..................seen 
Installing Circuit Breaker - 8720MCRPS!190.......................... 
Installing ACL Unit (Reactor Assembly) - 8720MC- 
RBPS190 5. dise ei etie nire aee cet 
Installing Fuses - 8720MC-RPS190...................... sss 
Installing 8720MC-EF190-VB EMC Filter Unit ....................... 
Installing DC Bus Power Output Wiring - All RPS units .............. 
Grounding the 8720MC-RPS Regenerative Power Supply ......... 
Wiring To Comply with EMC ....................sseeeen 
Sequence Signal Wiring..............................sssseeses 
Sequence Signal Wiring ..............................sssssssss 
Operation Timing of Sequence Control Signals .................... 
Installing Ribbon Cables ......................... ee 
Notes on Wiring.......................eeeeeeeeeneeeeenee nennen 


Chapter 5 
Checking before Powering up the 8720MC-RPS Regenerative 


Power Supply-« 43:3: ea e b et Ate eie Leeds 
Verifying the Installation ........................see 


Verifying the Rating of the 8720MC-RPS Regenerative 


Power SUpply x55 uote eet ri e diete tas 
MetrityIng:-WIrIngy si. oce ine Rte it ued eae et 
Powering up the 8720MC-RPS Regenerative Power Supply ........ 
Operating the 8720MC-RPS Regenerative Power Supply ............. 


Chapter 6 


Configuration of the Operation Panel „s.es 
Operation: Modes... neret entree tege erp uet 

Monitor Mode ......................... eene nnn 

Program: Mode... tiit iet a eit Rid 
Display «5: itta du E rebels a E OET 
Keypa EE 
Status DEDS.:: mL pe e eee Pen sre reete teret 


Chapter 7 


Parameter Types: ea eh e ie E Re RP E HP dps 
Protecting Parameters with Password... 
Displaying and Changing Parameter Values .................................. 
User: Parameters genai tette dre eter tee e 
Factory Parameters .0......cccccccesccceeeceeeeeceseeeceaeeeeeeecaeseseseeseaeeeeeaeeas 


4-11 
4-12 
4-13 
4-14 
4-14 
4-14 
4-15 
4-16 


4-22 


4-24 
4-26 


4-26 
4-27 
4-28 
4-29 
4-29 
4-30 
4-32 
4-32 
4-33 
4-36 
4-37 


Error Codes and 
Warning Buzzer 


Inspecting Trouble 
and Recovering 


Special Replacement 
Parts 


Outline Drawings of 
the Peripheral Devices 


Technical Specifications 


Default Parameter Settings 


Control Block Diagram 


Table of Contents 


Chapter 8 


Contents of Error Codes and Recovering ..........................sse 
Accessing and Clearing the Entries in the Error Log ..................... 
Recovering from Fatal Error .................... see 
Warning: BUZZer...... eerte eee tee tege 


Chapter 9 


Safety Precautions ....................ssssssssssseeennneenees 
Preliminary Review .....................eseeeseeneen nennen 
Troubleshooting Flow Charts .....................seeeeee 
8720MC-RPS Regenerative Power Supply Does Not Run ...... 
DC Bus Voltage Does Not Go Up ................. sse 


Chapter 10 


Chapter 11 


Outline Drawings of the Reactors ....................sssseseee 
Outline Drawing of the Varistors ......................seeseene 
Outline Drawing of the Harmonic Filters .............................ssssss 
Outline Drawing of the Line Filters... 
8720MC-EF190-VB EMC Filter Unit for Model 8720MC-RPS190BM 
and 8720MC-RPS190BS ................. sss 


Appendix A 
Appendix B 


Appendix C 


iv Table of Contents 


End of Table of Contents 


Introduction 


Finding Information 


Chapter 1 


Contents of This Manual 


The 8720MC-RPS Regenerative Power Supply Bidirectional 
Converter is a sinusoidal PWM converter which can control 
increase of DC bus voltage and perform continuous power 
generation. 


The 8720MC-RPS Regenerative Power Supply, therefore, can be 
used as power supply unit for various drives and inverter units. 


This instruction manual covers the 8720MC-RPS Regenerative 
Power Supply for 380-460 VAC, and describes the hardware 

and the start-up and programming procedure for the 8720MC-RPS 
Regenerative Power Supply. Read and understand this manual 
before proceeding. 


All the following units are UL/C-UL listed: 


8720MC-RPS027BM, 
8720MC-RPS065BM and 8720MC-RPSO65BS, 
8720MC-RPS190BM and 8720MC-RPS190BS 


Also, the Declaration of Conformity with the requirement for CE 
Mark was already issued for all the units. 


The 8720MC-RPS Regenerative Power Supply is a bidirectional 
converter with the following features: 


* Use of chopper type voltage increasing method with sinusoidal 
pulse-width-modulated (PWM) waveform control. 


* Programmable DC bus voltage. 
* Continuous power regeneration. 
e Attenuation of the higher order harmonics in the line current. 


* Safety interlocks and protection. 


This manual describes the details of the 83720MC-RPS Regenerative 
Power Supply in order to provide the user with a complete 
understanding of the installation, wiring, operation and adjustment 
of the product. As an aid in finding information in this manual, 
each chapter 1s briefly described below: 


e Chapter 1: Contents of This Manual 


Provides situation for acquiring UL Marks and CE 
Marks for the 8720MC-RPS Regenerative Power 
Supply and information on how this manual is 
organized and where to find additional 
information. 


1-2 Contents of This Manual 


Assumptions About the 
Audience 


* Chapter 2: 
* Chapter 3: 
e Chapter 4: 
* Chapter 5: 
* Chapter 6: 
* Chapter 7: 
* Chapter 8: 
* Chapter 9: 


* Chapter 10: 


* Chapter 11: 


* Appendix A: 


* Appendix B: 


* Appendix C: 


About 8720MC-RPS Regenerative Power Supply 


Identifies components of the 8720MC-RPS 
Regenerative Power Supply, shows their locations, 
and describes the main components. 


Installation 


Describes how to mount the 8720MC-RPS 
Regenerative Power Supply properly. 


Wiring 

Describes how to properly wire and connect the 
8720MC-RPS Regenerative Power Supply. 
Start and Adjustment 


Provides information on how to perform a final 
check before power is applied, and instructions on 
basic operation. 


Operation Panel 


Describes the composition and contents of the 
operation panel. 


Parameters 
Provides detailed description of each parameter. 
Error Codes and Warning Buzzer 


Describes contents of error codes and how to 
correct problems. 


Inspecting Trouble and Recovering 


Describes how to inspect and troubleshoot the 
8720MC-RPS Regenerative Power Supply. 


Special Replacement Parts 
Provides a list of required replacement parts. 
Outline Drawings of the Peripheral Devices 


Provides outline dimensions of converters, 
reactors, varistors, harmonic filters and line filters. 


Technical Specifications 


Lists specifications of the 8720MC-RPS 
Regenerative Power Supply in table form. 


Default Parameter Settings 


Provides the default values of the parameters in 
table form. 


Control Block Diagram 


Provides a control block diagram. 


This manual is intended for electrical personnel familiar with the 
operation of this equipment and the hazards involved. 


Notes on Handling the 
8720MC-RPS Regenerative 
Power Supply 


Contents of This Manual 1-3 


The following three labels are put on the 8720MC-RPS 
Regenerative Power Supply, advising the user of the notes on 
handling the unit. Read and understand the contents before using 


the unit. 


/N PWR 


CAUTION! 


WHEN YOU APPLY POWER 
AGAIN, VERIFY THAT 

THIS LAMP "PWR" IS 
TURNED OFF. 


A DANGER 


RISK OF ELECTRICAL SHOCK. DISCONNECT INPUT 
POWER BEFORE SERVICING EQUIPMENT. 





CAUTION ! 
THIS EQUIPMENT MUST BE MOUNTED IN A SUITABLE 
UL RECOGNIZED ENCLOSURE OR NEMA ENCLOSURE. 
USE COPPER 60/75 DEGREE C WIRE ONLY. 


1-4 Contents of This Manual 


End of Chapter 


Model Numbers of the 8720MC- 
RPS Regenerative Power 
Supply and its Accessories 


About 8720MC-RPS 


Chapter 2 


Regenerative Power Supply 


This chapter describes model numbers, major components, their 


locations, and terminal blocks of 8720MC-RPS Regenerative Power 


Supply. 


For operation of the 8720MC-RPS Regenerative Power Supply, a 
line reactor is required for each incoming phase as well as a 


BASE CATALOG NUMBER - CONVERTER 
REGENERATIVE POWER SUPPLY SIZE 


027 = 27 amp 
065 = 65 amp 
190 = 190 amp 
INPUT VOLTAGE 


varistor, a harmonic filter and a contactor. The following figure 
shows the model numbers of the 8720MC-RPS Regenerative Power 
Supply and its accessories. 


Regenerative Power Supply 
8720MC-RPSxxxvm-opt 




















B = 380 TO 460 VAC 








TYPE 
M = master 
S = slave 


See Note 1 








Note 1: Blank includes the 8720MC - RPS only as a spare part. 
HV2 option includes the 8720MC - RPS as well as 8720MC-HF-B2 harmonic 
filter and 8720MC-VA-B varistor. HV2 option, however, is applied only to 


8720MC-RPS027 and 8720MC-RPS065. 


Inductance as % Voltage Drop 


03 
05 


3% 
5% 
10 = 10% 
14 = 14% 


Line Reactor 


8720MC-LRxx-ayyyb 











Enclosure 
blank = open 
A = NEMA type 1 








Current Rating 








032 = 32 Amp 

048 = 48 Amp 

062 = 60 Amp 

070 = 80 Amp 

100 = 100 Amp 
Voltage 


B = 380 to 460 VAC 


Harmonic Filter 


8720MC-HF-b 








Voltage 
B2 = 380 to 460 VAC 


Varistor 


8720MC-VA-b 








Voltage 
B = 380 to 460 VAC 


EMC Filter Unit 
8720MC-EFxxx-Vb 





Current Rating 
190 = 190 Amp 








Voltage 
B = 380 to 460 VAC 


2-2 About 8720MC-RPS Regenerative Power Supply 


Power Rating 


Appearance of the 8720MC- 
RPS Regenerative Power 


Supply 


Power rating of 8720MC-RPS Regenerative Power Supply depends 
on the number of units connected in parallel as shown in the table 
below. Up to three units can be connected. 








Table 2.1 

Kind, Connection and Power Ratings 

Kind of Unit | Connection Model Number Power Rating 
15 kW Single Unit 8720MC-RPS027BM x 1 15 kW 

37 kW Single Unit 8720MC-RPSO65BM x 1 37 kW 





Two paralleled units | 8720MC-RPSO65BM + 75 kW 
8720MC-RPSO65BS x 1 





Three paralleled units | 8720MC-RPSO65BM + 110 kW 
8720MC-RPSO65BS x 2 





125 kW Single Unit 8720MC-RPS190BM x 1 125 kW 





Two paralleled units 8720MC-RPS190BM + 250 kW 
8720MC-RPS190BS x 1 





Three paralleled units | 8720MC-RPS190BM + 375 kW 
8720MC-RPS190BS x 2 














Appearance of Model 8720MC-RPS027 and 8720MC-RPS065 


The figure below shows the front view of the 8720M C-RPS027 and 
8720MC-RPS065 covered by the front cover. 

The operation panel (only for master unit) and the power lamp can 
be seen through the front cover. All the terminals blocks to 
connect wiring are covered by the front cover. 


Unit Front View 
ber E Hole for Cover Fixing Screw «1 
PEEL NEN 


Allen-Bradley 





Power Lamp 


Front Cover 














Operation Panel (only for Master Unit) 




















1> Model 8720MC-RPS027 has the cover fixing screw 
at the right upper corner instead of the left upper corner. 


About 8720MC-RPS Regenerative Power Supply 2-3 


When the front cover is removed from the 8720M C-RPS027 and 
8720MC-RPS065 , the main power terminal block (TB1) and the 
Regulator Board (only for master unit) will appear as shown in the 
following figure. To remove the front cover, first remove the screw 
at the upper left corner of the unit, and then lift up the cover. Note, 
however, that Model 8720MC-RPS027 has the cover fixing screw 


at the upper right corner instead of the upper left corner. Do not 
drop the screw from the cover. 


LAE Unit After Removing Front Cover 

















eeojo|eoeo 











Main Power Terminal Block (TB1) 




















Regulator Board (only for Master Unit) 





Sequence Signal Terminal Block (TB3) 





















































The control power terminal block (TB2) for Model 8720MC- 
RPS027 and 8720MC-RPS065 will be disclosed as shown in the 
figure below, when the Regulator Board is opened to the left hand 
side by removing the two fixing screws on the right hand side of the 
bracket supporting the Regulator Board. 


<O O O N) Unit After Removing Regulator Board 























ejeoe||ee 





Control Power Terminal Block (TB2) 



































ejejejejejejeje 

















2-4 


About 8720MC-RPS Regenerative Power Supply 


Appearance of Model 8720MC-RPS190 


The figure below shows the front view of the 8720MC-RPS190 
covered by the front cover. 


This unit has the main power terminals L1 to L3 at the top of the 
unit, and DC bus terminals P and N at the bottom of the unit. 


Main Power Terminals 












Unit Front View 


> Hole for Cover Fixing Screw, 





e Allen-Bradley 


Power Lamp 


Front Cover 














Operation Panel (only for Master Unit) 











. DC Bus Terminals 


When the front cover is removed from the 8720MC-RPS190 
Regenerative Power Supply, the Control Power Terminal Block 
(TB2), the Control Terminal Block (TB4), the Regulator Board 
(only for master unit) and Sequence Signal Terminal Block (TB3) 
will appear as shown in the following figure. 














Unit After Removing Front Cover 


Control Power Terminak Block (TB2) 








Control Terminal Block (TB4) 








Regulator Board (only for Master Unit) 











Sequence Signal Terminal Block (TB3) 
























































Main Components and 
Locations 


About 8720MC-RPS Regenerative Power Supply 2-5 


Model 8720MC-RPS027BM has the following main components. 
The identification numbers provided correspond to the numbers 
used in the following figure. The main components are included in 
the special replacement part list shown in Chapter 10. 


1. 
2. 
3. 
4. 
5. 
6. 
T; 
8. 


The following figure shows the locations of the main components 
of Model 8720MC2-RPS027BM. 





Regulator Board (BDSR) (only master unit has a Regulator 
Board, not on slave unit) 

Power Interface Board (PIFS) 

Driver Board (RCPB) 

Bus Capacitors 

Cooling Fan 

Power Modules 

Fuse-1 

Precharge/Discharge Resistor 














_— © 
poe) 
nc 











Unit Front Side 





© 


2-6 About 8720MC-RPS Regenerative Power Supply 


Model 8720MC-RPS065BM and 8720MC-RPS065BS have the 
following main components. 


1l. Regulator Board (BDSR) (only master unit has a Regulator 
Board, not on slave unit) 

Power Interface Board (PIFS) 

Driver Board (RCPB) 

Bus Capacitors 

Cooling Fan 

Power Modules 

Fuse-1 

Precharge/Discharge Resistor 


2. 
3. 
4. 
5: 
6. 
7. 
8. 


The following figure shows the locations of main components of 
Model 8720MC-RPS065BM and 8720MC-RPSO65BS. 























Unit Front Side 








About 8720MC-RPS Regenerative Power Supply 2-7 


Model 8720MC-RPS190BM and 8720MC-RPS190BS have the 
following main components. 


1. Regulator Board (BDSR) (only master unit has a Regulator 
Board, not on slave unit) 

Power Interface Board (PIFS) 

Bus Capacitors 

Cooling Fan 

Power Modules 

Fuses 1, 2, 3 


2. 
3: 
4. 
2. 
6. 


The following figure shows the locations of main components of 
Model 8720MC-RPS190BM and 8720MC-RPS190BS. 



























Unit Front Side 


® 





2-8 


About 8720MC-RPS Regenerative Power Supply 


2) Line Filter for 4) Circuit 


Main Circuit" 


Breaker 


Model 8720MC-RPS027 and 8720MC-RPS065 are composed of the 


following components. 


1) 8720MC-RPS 
2) Line filter for main circuit" 


3) Line filter for sequence power" 


4) Circuit breaker 

5) AC input fuse 

6) DC output fuse 

7) Varistor 

8) Harmonic filter 

9) Main magnetic contactor 
10) Reactor 


* Not necessary when compliance with CE mark is not required. 


The following figure shows system configuration of 8720MC- 


RPS027 and 8720MC-RPS065. 


























I 

I 

i 

i 7) Varistor 

| 8720MC-VA-B 

I 

I 

(| CH 

I 

l| | e=- 

(| 7 — ligyMain — 10) 
5) AC i | Magnetic Reactor 
Input Fuse" ^ 





















































A 














| 
| 
-* Contactor 8720MC-LR ! 
I 
| 
| 
| 


8720MC-RPSxxxvm-HV2 


1) 8720MC-RPS 





























6) DC Output 
Fuse 







































































3) Line Filter for 
Sequence Power* 





[| 





C P 


Es 

















FIT, 
aa 























8) Harmonic Filter 
8720MC-HF-B2 


AP 
" 




















EE 


e 











im, 


About 8720MC-RPS Regenerative Power Supply 2-9 


Model 8720MC-RPS190 is composed of the following components. 


1) 8720MC-RPS 
2) Circuit breaker 
3) AC input fuse 
4) DC output fuse 
5) EMC filter unit 
6) ACL unit 


The following figure shows system configuration of Model 


8720MC-RPS 190. 


5) EMC 





























1) 8720MC-RPS 








o 





























2) Circuit 3) AC Input Filter Unit 6) ACL Unit 
Breaker Fuse 8720MC-EF 8720MC-LR 




































































iO s 























4) DC Output 
Fuse 








PP 


e 














For more information, refer to Chapter 4 of this manual. 


2-10 


About 8720MC-RPS Regenerative Power Supply 


Terminal Blocks on the Main 


Circuit 


Ly 
L2 
L3 


LiAUX 
L2AUx 
L3AUX 
PR1 
PR2 
PR3 
MC1 
MC2 


This section provides the main circuit block diagram and the 
description of the main power terminal block (TB1) and the control 
power terminal block (TB2). The main circuit block diagram for 
Model 8720MC-RPS027BM, 8720MC-RPS065BM and 8720MC- 
RPS065BS is shown in Figure 2.1. 

















































































































































































































Figure 2.1 
Terminal Blocks on the Main Circuit for RPS027 and RPSO065 units 
ji ~~) TBI 
TB1| 
Ò © e e e 9 © P 
| + : 
| 4K 4 «1 «1 Ax 
Q e $ 
QO $ 
Ò $ 
d + 
Pa] DS KA [K4 KA T 
Fe 
r $ e ® N 
PR FUSE1 O 
| Driver Board RCPB 
TB2 | CN17 
O © 
O [ LO 
O 
Q Precharge/ 
Discharge 
AN Resistor 
V 
O 2 
; 6 
Ọ Power Interface Board PIFS 
t 

















1» The G terminal for Model 8720MC-RPS027 is located on the front surface of the chassis. 


About 8720MC-RPS Regenerative Power Supply 2-11 


Figure 2.2 shows the main circuit block diagram for Model 
8720MC-RPS190BM and 8720MC-RPS190BS. 


Figure 2.2 
Terminal Blocks on the Main Circuit for RPS190 unit 






































$ (P 
; BDI | 
' Tx 
BD |. 
D 
e Q N 











































































































Precharge/ 
Discharge 
Resistor 
Power Interface Board PIFS 
Fuse 3 CNS 
TB4: CN5 
& 
MC1 [Qf z 
MC2 | Ph $ 
APS 




















2-12 


About 8720MC-RPS Regenerative Power Supply 


Main Power Terminal Block (TB1) for Model 8720MC-RPS027 and 


8720MC-RPS065 


The table below provides the information of the terminals on use of 
the terminals on the main power terminal block (TB1) for Model 
8720MC-RPS027 and 8720MC-RPS065. 











Terminal Name Symbol | Description 

Main Power L4, Lo, L3 | To connect three-phase AC input power to 

Terminals the main circuit. 
For 460 V unit: 380 to 460 VAC «1095, 
-15%, 50/60 Hz +/-5% 

DC Bus Terminals P,N To connect the 8720MC-RPS Regenerative 
Power Supply to load equipment. 

Grounding Terminal G To ground the 8720MC-RPS Regenerative 
Power Supply. 











Control Power Terminal Block (TB2) for Model 8720MC-RPS027 


and 8720MC-RPS065 


The table below describes the terminals on the control power 
terminal block (TB2) for Model 8720MC-RPS027 and 


8720MC-RPS065. 











Terminal Name Symbol | Description 
Control Power Terminals | Lyayx To connect three-phase AC input power to the 
Coat control circuit. 
RE For 460 V unit: 380 to 460 VAC +10%, -15%, 
50/60 Hz +/-5% 
Terminals to Connect PR1, To connect precharge/discharge resistor. 
Precharge/Discharge PR2, When the built-in resistor is used: 
Resistor PR3 Jumper between PR2 and PR3, and open 
PR1. 
When an external resistor is used: 
Connect the resistor between PR1 and 
PR2, and open PR3. 
When the unit is connected for power 
regeneration mode only: 
Open all the terminals PR1, PR2 and 
PR3. 
Control Terminals for MC1, To be used as the control terminals for the 
Main Magnetic Contactor | MC2 main magnetic contactor (rated for 250 VAC/ 
1 Amp or 30 VDC/1 Amp). 











About 8720MC-RPS Regenerative Power Supply 


2-13 


Main Power Terminal Bar for Model 8720MC-RPS190 


The table below describes the terminals on the main power terminal 
bar for Model 8720MC-RPS 190. 











Terminal Name Symbol | Description 

Main Power L4, Lo, L3 | To connect three-phase AC input power to 

Terminals the main circuit. 
For 460 V unit: 380 to 460 VAC «1095, 
-15%, 50/60 Hz +/-5% 

DC Bus Terminals P,N To connect the 8720MC-RPS Regenerative 
Power Supply to load equipment. 

Grounding Terminal G To ground the 8720MC-RPS Regenerative 
Power Supply. 











Control Power Terminal Block (TB2) and Control Terminal Block 
(TB4) for Model 8720MC-RPS190 


The table below describes the terminals on the control power 
terminal block (TB2) and the terminals on the control terminal 
block (TB4) for Model 8720MC-RPS190. 




















Terminal Name Symbol | Description 
Control Power T |Liaux, | To connect three-phase AC input power to the 
Terminal B | Leaux, | control circuit. 
2 aux | For 460 V unit: 380 to 460 VAC +10%, -15%, 
50/60 Hz +/-5% 
Terminals to Connect PR1, | To connect precharge/discharge resistor. 
Precharge/Discharge PR2, When the built-in resistor is used: 
Resistor PR3 Jumper between PR2 and PR3, and open 
PR1. 
When an external resistor is used: 
Connect the resistor between PR1 and 
PR2, and open PR3. 
When the unit is connected for power 
regeneration mode only: 
Open all the terminals PR1, PR2 and 
PR3. 
AC Reactor Fan T |+24V3 |To supply AC power to the fan for the AC reactor 
Power Terminals B | 0V3 unit through the EM4000 EMC filter unit. 
Terminals for Fan Fault 4 SENS |To enter fault signal of the fan for the AC reactor 
Signal unit. 
Power Terminals for 424V2 |To supply power to the main magnetic contactor 
Main Magnetic OV2  |andthe fan for the cabinet fan through the 
Contactor MC 8720MC-EF190 EMC filter unit. 
and Optional Fan 
Control Terminaks for MC1 To be used as the control terminals for the main 
Main Magnetic MC2 magnetic contactor. 


Contactor 














2-14 About 8720MC-RPS Regenerative Power Supply 


Regulator Board 


The Regulator Board exists only on master unit. The slave unit for 
parallel connection has no Regulator Board and is controlled by the 
microprocessor of the Regulator Board on the master unit. 


The 8720MC-RPS Regenerative Power Supply regulation is 
performed by a microprocessor on the Regulator Board. The figure 
below shows the locations of the main components on the Regulator 
Board. The operation of the 8720MC-RPS Regenerative Power 
Supply is adjusted by the parameters set by the keypad. 








































































































e 
e 
C e 
N2 ® i 
Me: è JP1 JP3 Microprocessor 
ule sw7 O0] [OO 
JP2 
> OO 
; E A 
e 
© 
[91 1 
CN1 E Swe Sequence Signal 
B e e Terminal Block (TB3) 
e 
IE é 
e 
e 
[2 | © 66960696969 0 
o o 











* PWM Gating Signals 


Based on the output of the current/voltage control loop, the 
Regulator Board sends PWM gating signals through the Power 
Interface Board to the Power Modules (transistors), producing a 
pulse-width-modulated (PWM) waveform. 


* Sequence Output Signals 


Sequence output signals are provided from the sequence signal 
terminal block (TB3) of the Regulator Board to indicate the unit 
status . 


e Four-character Display and Six LEDs 


A four-character seven-segment LED display is used to monitor 
values, parameter numbers, parameter values, and error codes. 
Six LEDs show the display mode of the operation panel and the 
units of the monitored values. 


About 8720MC-RPS Regenerative Power Supply 2-15 


Jumpers and Switches 





familiar with the construction and operation of this 
equipment and the hazards involved should set 
jumpers and switches. Read and understand this 
manual in its entirety before proceeding. Failure to 
observe this precaution could result in severe bodily 
injury or loss of life. 


^ ATTENTION: Only qualified electrical personnel 


(SW6) during operation. Also, do not alter the setting 
of any jumpers and switches during operation. 

Failure to observe this precaution could result in 
destruction of the equipment, severe bodily injury or 
loss of life. 


^ ATTENTION: Do not press the reset button switch 


jumpers not described in this manual. Failure to 
Observe this precaution could result in damage to, or 
destruction of, the equipment. 


ATTENTION: Do not alter the settings of any 





The jumpers JP1 to JP3 and the switches SW6 and SW7 are set 
before shipment from factory. If you need to change the jumpers 
and/or switch settings, read and understand the following 
description of these jumpers and switches before proceeding. 


* Jumper JP1 to Enable Operation 
Short this jumper to start switching operation of transistors of 
the 8720MC-RPS Regenerative Power Supply when the RUN 
sequence input is enabled. This jumper should always be kept 
closed. 

* Jumper JP2 to Enable Inspection Mode 
Keep this jumper open always. 

* Reset Switch SW6 


Pressing this switch resets the CPU. 
Important: Do not press the reset switch SW6 during operation. 


e Switch SW7 to Enable Base Block 


This switch is used to stop switching of transistors that produce 
PWM waveform by interrupting the base signal from the Power 
Modules. To interrupt the base signal, turn the switch to the 
OFF side. 


As shown in the figure below, SW7 consists of four switches, 
and SW7-1 to SW7-3 can be allocated to the master unit and 
slave units 1 and 2. In the case of a master with paralleled slave 
units, it is possible to interrupt the base signal of each unit by 
turning the corresponding switch to the OFF side. SW7-4 must 
always be kept to the OFF side. 


2-16 About 8720MC-RPS Regenerative Power Supply 


When two units are connected in parallel, turn the switches 
SW7-1 and SW7-2 to the ON side, and when three units are 
connected in parallel, turn the switches SW7-1 through SW7-3 
to the ON side. 














Slave Unit 2 








Slave Unit 1 


Master Unit 

















SW7-4 «——— Keep SW7-4 always to the OFF side. 


SW7-3 
When the switch is turned to the OFF side, the base signal is 
interrupted, and the unit will be in the OFF condition. 

SW7-2 When the switch is turned to the ON side, the base signal is 
kept ON, and PWM switching will continue. 


SW7-1 








ON OFF 


ENABLE BASE BLOCK 


About 8720MC-RPS Regenerative Power Supply 2-17 





Sequence Signal Terminal Block (TB3) 


As shown in the figure in page 2-14, there is a sequence signal 
terminal block (TB3) on the Regulator Board. The following table 
provides the information on each terminal of TB3. 
























































































































































Name of Terminal Symbol Description 
Sequence Input MC Enter the supplemental contact signal (normally open contact) of the main magnetic contactor.* 
ional Pe eee É 
Signals MC * Because driving current of sequence input signals 
4.7K MC | is 5mA and below, use a contact of which 
LL OO | | minimum applicable load is 5mA and below. 
io 1K 
2av| () 
8720MC-RPS 
RST The reset signal (+24 VDC) is used to reset fault. Close this reset signal as required.* 
* Because driving current of sequence input signals 
4.7K RST [7A ` is 5mA and below, use a contact of which 
e mm LM ^ minimum applicable load is 5mA and below. 
RW 1K 
24V |C) 
8720MC-RPS 
PWR Enter the RUN signal («24 VDC)*. 
* Because driving current of sequence input signals 
4.7K PWR is 5mA and below, use a contact of which 
O} () minimum applicable load is 5mA and below. 
i 1K 
24v (C ) 
8720MC-RPS 
Power for OV 0 V of +24 VDC power. 
Sequence Signals | 24 y +24 VDC power (rating : 24 VDC/0.2 Amps). 
Sequence Output COM Common for IP and RDY signals. 
Signals IP This is a contact signal that is turned ON during instantaneous power loss (contact rating : 30 VDC/ 
50 mA). =. oil p —M—————— 
4VC Load 
24V 
ov K 
con |} ove 4 
Y= IP ^ IP 
à 4.64K 
8720MC-RPS i 
RDY This is a contact signal that is turned ON while the unit is ready for operation (contact rating : 30 VDC/ 
50 mA). | 
4VC Load 
24V 
ov «C 
COM ove Y* 
-L- RDY 
E) 
YV—-RDY e 
C1 64K 
8720MC-RPS | l 
FR, FR This is a contact signal that opens while fault occurs (contact rating : 250 VAC/1 Amp or 30 VDC/ 























































































































1 Amp). 








FR 


Q 





TFR 











O 








8720MC-RPS 








2-18 About 8720MC-RPS Regenerative Power Supply 


End of Chapter 


Installation Site 


Chapter 3 


Installation 


This chapter shows how to mount the 8720MC-RPS Regenerative 
Power Supply properly, and provides information on the items to be 
checked. 





familiar with the construction and operation of this 
equipment and the hazards involved should install, 
adjust, operate, or service this equipment. Read and 
understand this manual in its entirety before 
proceeding. Failure to observe this precaution could 
result in destruction of the equipment, severe bodily 
injury, or loss of life. 


^ ATTENTION: Only qualified electrical personnel 


with all applicable local, national and international 
codes. Failure to observe this precaution could result 
in damage to, or destruction of, the equipment. 


^ ATTENTION: The user is responsible for conforming 





It is important to properly plan before installing the 8720MC-RPS 
Regenerative Power Supply to ensure that the environment and 
operating conditions of the units are satisfactory. Read this section 
before continuing with the unit installation. 


Environmental Conditions to be Met 


The Declaration of Conformity with the requirements for CE Mark 
was issued for the following units, and these units must be used in 
cabinet. 


8720MC-RPS027BM, 
8720MC-RPS065BM, 8720MC-RPSO6S5BS, 
8720MC-RPS190BM and 8720MC-RPS190BS 


Also, before deciding on an installation site, consider the following 
guidelines: 


e Verify that the units can be kept clean, cool and dry. 


* Besure that the units are always away from oil, metal powder, 
other airborne contaminants, and direct sunlight. 


* Check that the units will not be exposed to excessive vibration 
and noise, and that they will not be close to instruments 
sensitive to electrical noise. 


* The area chosen should allow the space required for proper air 
flow as defined in the following. 


Installation 


* Check that the temperatures within the vicinity of the units are 
between -10 to 50 degree C (14 to 122 degree F). In case of 
8720MC-RPS190, however, the ambient temperature must be 
between -10 to 40 degree C (14 to 104 degree F). 


* Check that the relative humidity is between 5 and 95% without 
condensation. 


* Do not install the units above 1,000 meters (3,300 feet) without 
derating output power. For every 300 meters (1,000 feet) above 
1,000 meters (3,300 feet), derate the output power 4%. When 
you need to install the units above 1,500 meters (5,000 feet), 
contact The Allen-Bradley Company. 


In case of Model 8720MC-RPS190BM and 8720MC-RPS190BS, 
it is possible to ship the units from the factory after mounting each 
of these units in a cabinet together with the required peripheral 
devices and installing wiring in the cabinet. When the user 
purchases from The Allen-Bradley Company the units mounted in 
the cabinet, the above-mentioned guidelines should be considered 
for selection of the installation site. 


Required Total Area 


Overall unit dimensions are shown in Figures 3.1 and 3.2. Figure 
3.1 illustrates the dimensions of Model 8720M C-RPS027 and 
8720MC-RPS065 units, and Figure 3.2 shows the outline 
dimensions of 8720MC-RPS190 unit. Also as an aid in calculating 
the required total area, Figures 3.3 and 3.4 show the required 
distance between two adjacent units in case of two or three 
paralleled units of Model 8720MC-RPS027 and 8720MC-RPS065, 
and Figures 3.5 and 3.6 show the required distance between two 
adjacent units in case of two or three paralleled units of Model 
8720MC-RPS190 unit installed in a cabinet provided by the user. 


Installation 


3-3 


Overall Dimensions of a Single Unit of Model 8720MC-RPS027 and 8720MC-RPS065 



































Figure 3.1 
Units 
H dia. C 
Gdia. \ k Jj " 
x A 
| y N AN T 
VU E, li i 
o Q XL 


ww Allen-Bradley 

























































































Nx 











Qumun 
pi c 
REGENERATIVE POWER SUPPLY 
ES IBS 
Y v 
y 
L 
ing 
LL 
Model A B C D E F G H K L 



































8720MC-| 179.4 | 395 | 127 | 3332 | 10 30 18 9 9 | 318.3 
RPS065 | (7.06) | (15.6) | (5.0) | (131.2) | (0.39) | (1.2) | (0.71) | (0.35) | (0.35) | (12.53) 
8720MC-| 167 | 320 | 120 | 260 | 10 30 17 8.2 8 310 
RPS027 | (6.57) | (12.6) | (4.72) | (10.24) | (0.39) | (1.2) | (0.67) | (0.32) | (0.31) | (12.20) 





Unit: Millimeter (Inch) 


3-4 


Installation 


Figure 3.2 


Overall Dimensions of a Single Unit of Model 8720MC-RPS190 Unit 


























































































































dia. 
$i 
~ 
el 
eo 
N 
A 
A 
e Allen-Bradley 
9| s & RR Gc 
Y [2] OlT N 
i i LEON 
RJ & mo} alom 
ai cae Qu 
Q e 
o (1$ 
Y 
S Eh Y Y 
y S y 
oh P M8 || 10 A 
= (0.4) S 
Y N d - 
zl | 30 glS 
8 1.2 
& 59.5 
(2.34) 
» 242 (9.6) N 











- 110 (4.3) ms 110 (4.3) Pa 


Lı L2 L3 














435 (17.1) 








Unit: Millimeters (Inch) 


Figure 3.3 


Installation 


3-5 


Required Distance between Units in Case of Two Paralleled Units of 
Model 8720MC-RPS027 or 8720MC-RPS065 Units 





[O 





O| LO 


ô | 





o 
O 


o 
O 





Allen-Bradley 





Allen-Bradley 































































































SON ION 
REGENERATIVE POWER SUPPLY 
NSO Nan 














SON ITN 
REGENERATIVE POWER SUPPLY 
NSO Naan 











Max. 250 (9.8) 





Unit: Millimeter (Inch) 


Note: In case two units of Model 8720MC-RPS027 or 8720MC-RPS065 unit are installed in parallel, 
the master unit must be on the right hand side as shown in the above. 


Figure 3.4 


Required Distance between Units in Case of Three Paralleled Units of 
Model 8720MC-RPS027 or 8720MC-RPS065 Units 





© | 


O| LO 


© | 








LO 


O 





Allen-Bradley 


o 
O 








‘uy Allen-Bradley 


O 











Allen-Bradley 
















































































moos 
REGENERATIVE POWER SUPPLY 
EC ESSA 











[Ig 
REGENERATIVE POWER SUPPLY 
ES ES 





K 
REGENERATIVE POWER SUPPLY 
ES ESSA 








Max. 250 (9.8) 


Max. 250 (9.8) 





Unit: Millimeter (Inch) 


Note: In case three units of Model 8720MC-RPS027 or 8720MC-RPS065 unit are installed in parallel, 


the master unit must be installed at the rightmost end as shown in the above. 


3-6 Installation 


Figure 3.5 


Required Distance between Units in Case of Two Paralleled Units of 


Model 8720MC-RPS190 Unit 


Peels Pals 


o 


POWER 














O O 


Allen-Bradley Allen-Bradley 









































Unit: Millimeters (inch) 


Note: In case two units of Model 8720MC-RPS190 unit are installed in parallel, the master unit 


must be installed on the right hand side as shown in the above. 


Figure 3.6 


Required Distance between Units in Case of Three Paralleled Units of 


Model 8720MC-RPS190 Unit 


























OO) OO) fo {©} 

Ho o rial 6 oo 

o o o o 
Q noe 

e Allen-Bradley Allen-Bradley e Allen-Bradley 





















































O 
Max. 620 (24.4) Max. 620 (24.4) |O 





Unit: Millimeters (inch) 


Note: In case three units of Model 8720MC-RPS190 unit are installed in parallel, the master unit must 


be installed at the rightmost end as shown in the above. 


Installation 3-7 


Recommended Air Flow Clearance 


Be sure that there is adequate clearance for air ventilation around 
the 8720MC-RPS Regenerative Power Supply. Cooling air flows 
from the bottom to the top of the units. For best cooling effect, do 
not mount the 8720MC-RPS Regenerative Power Supply directly 
above each other. The figure below shows recommended air flow 
clearance. 





Exhaust 








Ly 





(5.9) 





a || 











oO 8 
O 


O 





Allen-Bradley 





















































N | | 


Intake 





| 


Unit: Millimeter (Inch) 





Notes on Installation 


When mounting the 8720MC-RPS Regenerative Power Supply, pay 
attention to the following: 


* Mount the units vertically. 


* When two or three units of 8720MC-RPS Regenerative Power 
Supply are installed in parallel, install the master unit at the 
rightmost end viewed from the front side. 


e Be sure that the ambient temperatures surrounding the units is 
between -10 to 50 degree C (14 to 122 dgree F). In case of 
Model 8720MC-RPS190BM and 8720MC-RPS190BS units, the 
ambient temperature is -10 to 40 degree C (14 to 104 degree F). 
To cool down the temperature in the cabinet, provide sufficient 
space to allow adequate air flow over the components. If 
necessary, add circulating fans to assure good convective heat 
transfer. 


* Do not mount any devices behind the units. This area must be 


kept clear of all power wiring (control power wiring, main 
power supply wiring and DC bus power wiring). 


3-8 


Installation 


Do not expose the units to excessive electrical noise. If it is not 
avoidable to install the 8720MC-RPS Regenerative Power 
Supply close to a noise source or to use the units in environment 
where noise trouble is expected, take sufficient noise 
suppression measures. 


Recommended Wire Sizes 


Chapter 4 
Wiring 


This chapter provides instructions on how to properly wire the 
8720MC-RPS Regenerative Power Supply units. It also provides 
information on the selection of the circuit breaker, the main 
magnetic contactor, reactor, and the harmonic filter, etc. 


^ ATTENTION: Only qualified electrical personnel 


familiar with the construction and operation of this 
equipment and the hazards involved should install, 
adjust, operate, or service this equipment. Read and 
understand this manual in its entirety before 
proceeding. Failure to observe this precaution could 
result in destruction of the equipment, severe bodily 
injury or loss of life. 





with all the applicable codes. Wiring practices, 
grounding, disconnects, and overcurrent protection 
are of particular importance. Failure to observe this 
precaution could result in severe bodily injury or loss 
of life. 


^ ATTENTION: Do not use a megger to perform 


^ ATTENTION: The user is responsible for conforming 


continuity checks in the equipment. Use higher range 
of a circuit tester for this purpose. Failure to observe 
this precaution could result in damage to, or 
destruction of, the equipment. 


with all applicable local, national and international 
codes. Failure to observe this precaution could result 
in damage to, or destruction of, the equipment. 


^ ATTENTION: The user is responsible for conforming 





This section shows the recommended wire sizes for the wires to be 
used in cabinet. Select the wire sizes in consideration of the 
following: 


* Applicable local, national and international codes. 


* Temperature increase and voltage drop due to type of wires, 
wiring method, wiring distance, etc. 


4-2 


Wiring 


Recommended Wire Sizes for Power Wiring to the Main Power 
Terminal Block (TB1) and the Main Power Terminal Bars 


Table 4.1 to 4.3 show the recommended wire sizes for power wiring 
to the main power terminal block (TB1) and the Main Power 
Terminal Bars. Table 4.1 shows the wire sizes for Model 8720MC- 
RPS027 unit, Table 4.2 shows the wire sizes for Model 8720MC- 
RPS065 unit, and Table 4.3 shows the wire sizes for Model 
8720MC-RPS190 unit. The wire sizes shown assume full utilization 
of the rated capacity of the RPS unit. 


Table 4.1 


Recommended Maximum Wire Sizes for Model 8720MC-RPS027 Unit 











Name of Terminal Symbol | Screw Size Size of Wire AWG/mm?2 
Main Terminals (Input) Ly, Lo, L3 M5 310 / 5.5 mm? 
DC Bus Terminals (Output) P,N M5 #10/5.5 mm? 
Grounding Terminal (Earth) G M5 #10/5.5 mm? 














Table 4.2 


Recommended Maximum Wire Sizes for Model 8720MC-RPS065 Unit 
































Name of Terminal Symbol | Screw Size Size of Wire AWG/mm? 
Main Terminals (Input) Ly, Le, L3 M6 #4 / 22 mm? 
DC Bus Terminals (Output) P,N M6 #4 / 22 mm? 
Grounding Terminal (Earth) G M6 #5 / 22 mm? 
Table 4.3 
Recommended Maximum Wire Sizes for Model 8720MC-RPS190 Unit 
Name of Terminal | Symbol | Screw Size | Size of Wire ANG/mm? | Attached Lugs ^? 
Main Power Supply | L4, Ls, L3 M10 Larger than 38 JST, R38-10 
Terminals mm? - 2 in parallel (M10) (6 Pieces) 
(AWG #2 - 2 in 
parallel) 
DC Bus Terminals P,N M10 Larger than 100mm? | JST, R100-10 
(AWG #4/0) (M10) (2 Pieces) 
Grounding Terminal G M8 Larger than 38mm? _ | JST, R38-8 (M10) 
(AWG #2) (1 Piece) 

















“) UL-listed wires must be lugged by attached lugs. 
JST is Japan Solderless Terminal Co. 


Recommended Wire Sizes for Power Wiring to the Control Power 
Terminal Block (TB2) and the Control Terminal Block (TB4) 


Table 4.4 shows the recommended wire sizes for power wiring to 
the control power terminal block (TB2) and the control terminal 


block (TB4). 


Table 4.4 


Recommended Wire Sizes for Power Wiring to the Control Power Terminals 
and the control terminal block (TB4) 





Name of Terminal 


Symbol 


Size of Wire 


Main Terminals (Input) 


Ly AUX; LoAUx; L3aux 


3.5 mm? (AWG #12) 





DC Bus Terminals (Output) 


PR1, PR2, PR3 


3.5 mm? (AWG #12) 





Grounding Terminal (Earth) 


MC1, MC2 





2.0 mm2 (AWG #14) 








AC Input Power Wiring 
for Model 8720MC-RPS027 
and 8720MC-RPS065 


Wiring 4-3 





Regenerative Power Supply units using high speed 
switching elements generates noise regarding 
emission due to noise generated during switching. 
To avoid influence of such noise, it is very important 
to use as thick and short grounding wire as possible. 


^ ATTENTION: It is required to install a power 


^ ATTENTION: Equipment as the 8720MC-RPS 


disconnecting device, a main magnetic contactor and 
an AC reactor in the AC input power line. When 
8720MC-RPS027 and 8720MC-RPS065 must 
conform with the requirements of CE Mark, install a 
line filter in the AC input power line. Failure to 
observe these precautions could result in damage to, 
or destruction of, the equipment. 


is connected to AC input power line of 8720MC-RPS 
Regenerative Power Supply unit, large distortion may 
be produced in the AC input power voltage and the 
8720MC-RPS Regenerative Power Supply may not 
operate normally. Remove such large distortion from 
the AC input power voltage. 


^ ATTENTION: When a thyristor or similar equipment 





The capacity (rating) of the 8720MC-RPS Regenerative Power 
Supply depends on the number of units connected in parallel, i.e., 
single unit, two paralleled units, or three paralleled units. The 
relation between the number of paralleled units and the unit 
capacity is shown in Table 2.1. 


Figure 4.1 to 4.3 show typical connection of AC input power wiring 
for Model 8720MC-RPS027 and 8720MC-RPS065 units. Figure 
4.1 shows AC input power wiring for the single unit, and Figures 
4.2 and 4.3 show AC input wiring for parallel connection of two 
units and three units respectively. Install appropriate reactors, 
magnetic contactors, disconnects, line filters, etc. at the positions 
shown in these figures. 


The phases of the AC input power to the main power supply 

terminals L,, L and L} must be same as the phases of the control 
power to the control power terminals Li aux, Laux, and LaAux. In 
case of paralleled units, the phases of the control power Laux, Loaux, 
and L3,yx for the slave unit(s) must also be same as those for the 
master unit. 


Wiring 
ATTENTION: Special caution must be paid to wiring 
to the 8720MC-RPS Regenerative Power Supply when 
connecting multiple units in parallel. The phases of AC 
input power to the main power supply terminals (L,, L, 
and L3) and to the control power terminals (L; Aux; 
L5Aux. and L4Aux) and the polarity of DC bus output (P 
and N) of all the connected units must be the same. 
Failure to observe this precaution could result in 
destruction of the equipment, severe bodily injury or 
loss of life. 
Figure 4.1 
Typical Connection of AC Input Power Wiring for Single Unit of 
Model 8720MC-RPS027 and 8720MC-RPS065 
8720MC-RPS 
Regenerative 
Main din ARM 
; ; Circuit F 4 Magnetic 
Line Filter «5 Breaker «4 Pr Contactor Terminal Block for Main 
for AC Input oF Varistor Power Supply (TB1) 
Power ) Power (MC) 
Pri Reactor <11 Protection Fuse <2 
= ? | H0S O| Lı ——- Terminals P and N «6 
380 to i | | ^00" O| Le NO of Load Equipment 
460 VAC | j $ | | /00^ [9| ts G KES 
E Harmonic 
Filter 
E| 28,9 
= <1 
O| Liaux 
(| L2AUX 
O| L3AUX Terminal Block for 
Terminal Block for Sequence Signals (TB3) 
APEP Control Power (TB2) |O | PR1 RUN On/Off 
ingle-phase mO] PR2 
Line Filter <5 PWR | Or —O 
p — — ——.O| PR3 MC | <10 
100 to 115 VAC H3 iO mci M6 OT | 
or i i (mc) 
200 to 230 VAC P em We O| mc2 24v |O} 
1» The phases of the AC input power to the main supply terminals L1, L2 and L3 must be same as those of the control power 
to the control power terminals L1AUX, L2aux and L3AUX. 
2» It is recommended to install the DC bus protection fuses on the both lines to the terminals P and N to prevent ground fault, 
when more than one drive is connected to the 8720MC-RPS Regenerative Power Supply. 
3» Turn ON the switch SW7-1 on the Regulator Board without fail. 
4» Both a three-phase circuit breaker and fuses are not required. Check your local code to determine if fuses should be 
used instead of a circuit breaker. 
5» When the 8720MC-RPS Regenerative Power Supply must conform with the requirements of CE Mark, install a line filter in 
the AC input power line and a single-phase line filter in the power supply line to the main magnetic contactor. 
6» The length of the DC bus wiring runs should not exceed 2 meters. It is also recommended to use twisted shielded cable. 
7» The length of the wiring in the cabinet must be as short as possible. 
8» The length of the wiring from the E terminal of the Harmonic Filter to the Grounding Terminal must be as short as possible. 
9» The physical location of the Harmonic Filter and Varistor relative to the Contactor and Line Reactor is important. 
Connect these devices in the relative positions shown in this illustration. 
10» Because driving current of sequence input signals is 5mA and below, use a contact of which minimum applicable load is 5mA and below. 
11» Use the reactor in maximum surrounding air temperature of 55 degree C (131 degree F) and below. 


































































































































































































200 to 


Wiring 4-5 


Figure 4.2 
Typical Connection of AC Input Power Wiring for Two Paralleled Units of 
Model 8720MC-RPS027 and 8720MC-RPS065 















































































































































































































































































































































8720MC-RPS 
Regenerative Power 
Line Filter <6 Fuse <4 Main pet Unit). 
for AC Circuit for Magnetic ib 
Input Breaker «4 Power : Contactor < 
Power CB2) Supply Varistor}  (MC2) Reactor Protection 
DEDERE (L2) Fuse <2 
— 1! — + | om OL P O Terminals <7 
380 to i | P and N 
et — = + L N |(O of Load 
460 VAC ! ! | | w [O] L2 Equipment 
' E E * | 590 O| L3 GJO © 
p Harmonic ph LO | L1AUX 
CB2 Filter MC2 ^ 
L 
«9, 10 Lo 2AUX 
| +O) Laux 
O| PR1 
Single-phase O| PR2 
Line Filter <6 
EORR 1 O| PR3 
oo lae 
gc MC2 O| MC1 
or i ! e 
i i O| MC2 
230 VAC L- 
8720MC-RPS 
Regenerative Power 
; Supply Unit 1 
Line Filter «6 Main i 
for AC Circuit Fuse <4 Magnetic (Master Unit) 
Input Breaker <4 for Contactor <12 
Power (CB1) Power Varistor| (MC1) Reactor Protection 
p Supply (L1) Fuse <2 
E Ee t | HOO O] Li P/O} 
ae | | H}~0044740} Le N |OI-ESI— 
ME = t | {0044770 | bs G|Oi 
Li Ee me) 
MC1 
Jo L1AUX 
^i] LoAUX 
PO |} L3aux 
Harmonic 
Filter O| PR1 RUN On/Off 
E 
<9, 10 MU PWR |O—O 
O| PR3 
(uci) Bu: "Eran" 
M? 24V MC1 MC2 CB2 
1» The phases of the AC input power to the main supply terminals L1, L2 and L3 must be same as those of the control power to the control power terminals 
L1aux, LeAUX and Lgaux. The phases of the control power L1AUx. LeAUx and LaAux for the slave unit(s) must also be same as those for the master unit. 





2» It is recommended to install the DC bus protection fuses on the both lines to the terminals P and N to prevent ground fault, when more 
than one drive is connected to the 8720MC-RPS Regenerative Power Supply. 
3» Turn ON the switches SW7-1 and SW7-2 on the Regulator Board without fail. 
4» Both a three-phase circuit breaker and fuses are not required. Check your local code to determine if fuses should be used instead of a circuit breaker. 
5» The slave circuit breaker must be provided with an auxiliary contact as a safety interlock to the master. Use fuses with a slightly higher current rating 
if your local code requires them. 
6» When the 8720MC-RPS Regenerative Power Supply must comform with the requirements of CE Mark, install a line filter in the AC input power line and 
a single-phase line filter in the power supply line to the main magnetic contactor. 
7» The length of the DC bus wiring runs should not exceed 2 meters. It is also recommended to use Bus bar for the common bus sized to 1.75 times the total 
continuous current output of the RPS units. 
8» The length of the wiring in the cabinet must be as short as possible. 
9» The length of the wiring from the E terminal of the Harmonic Filter to the Grounding Terminal must be as short as possible. 
10» The physical location of the Harmonic Filter and Varistor relative to the Contactor and Line Reactor is important. Connect these devices in the relative positions 
shown in this illustration. 
11> Because driving current of sequence input signals is 5mA and below, use a contact of which minimum applicable load is 5mA and below. 
12» Use the reactor in maximum surrounding air temperature of 55 degree C (131 degree F) and below. 


4-6 Wiring 


Figure 4.3 
Typical Connection of AC Input Power Wiring for Three Paralleled Units of 
Model 8720MC-RPS027 and 8720MC-RPS065 












































































































































































































































































































































































































































8720MC-RPS 
Regenerative rower 
Line Fil Main upply Uni 
Por AC 2 Circuit pre Magnetic P (Slave Unit 2) 
UE POENI Power Varistor Ec Reactor Protection 
P1 Supply (L3) Fuse <2 E 
Lt! c * | Hao OL, P |O Ee Terminals P and N 
3 DAC $2 —3 : = ——|+- | H-T L2 N = . of Load Equipment 
! 1 
* i | = $ | Ho Oll GIO 
r1 Harmonic] [1H IO] Liaux ce 
v y Filter WS 
CB3 E MC3 Leaux 
<9, 10 LaAUX 
Sneha M pu 
Line Filter PR2 
PEN 
10010 115 VAC |. | | (aed) jp 
or NE oed 
200 to 230 VAC 71 r MC2 
8720MC-RPS 
"T Regenerative Fower 
ine Fi ain upply Uni 
AC = Circuit ruse s4 Magnere <12 (Slave Unit 1) 
oi - ontactor n 
Power (Gna) Power  [Vansior] mca) Reactor Protein 
i73 Supply (L2) Fuse 2 
tí = + | HO L P => 
H— : * | H—00* iO|l2 N [Oe 
H— - t * | Ht L G T 
Harmonic Liaux 
n R Filter p p * 3 
2AUX 
CB2 E  MC2 M 
<30 L3Aaux 
© "ni 
PR2 
PR3 
MC2 
8720MC-RPS 
Regenerative Power 
T Main upply Uni 
kine Fer <6 circuit Fuse <4 Magnetic X5 (Master Unit) 
Input Breaker <4 _ for Varistor| Contactor. rT . 
P p CB1) Power (MC1) Reactor Protection 
cu Supply (L1) Fuse <2 
1 = T e | HO oly P 
1 1 
1 4 : * | Ho IO N E3 
1 1 
| t H | Ho Sih ald 
D [AMC a ( 1 ) 
Liaux 
Xol Leaux 
Lgaux 
«9, 10 n 
En PRI RUN On/Off 
PRS <5, 11 
MC , 
(ee) MCI WAFAEAFAE T 
MC2 24V Ic 
MC1 MC2 MC3 CB2 CB3 























1» The phases of the AC input power to the main supply terminals L1, L2 and La must be same as those of the control power to the control power terminals 
L1AUX, LeAUx and L3Aux. The phases of the control power L1AUX. LeAUx and L3Aux for the slave unit(s) must also be same as those for the master unit. 
2» It is recommended to install the DC bus protection fuses on the both lines to the terminals P and N to prevent ground fault, when more 
than one drive is connected to the 8720MC-RPS Regenerative Power Supply. 
3» Turn ON the switches SW7-1, SW7-2 and SW7-3 on the Regulator Board without fail. 
4» Both a three-phase circuit breaker and fuses are not required. Check your local code to determine if fuses should be used instead of a circuit breaker. 
5» The slave circuit breaker must be provided with an auxiliary contact as a safety interlock to the master. Use fuses with a slightly higher current rating 
if your local code requires them. 
6» When the 8720MC-RPS Regenerative Power Supply must comform with the requirements of CE Mark, install a line filter in the AC input power line and 
a single-phase line filter in the power supply line to the main magnetic contactor. 
7» The length of the DC bus wiring runs should not exceed 2 meters. It is also recommended to use Bus bar for the common bus sized to 1.75 times the total 
continuous current output of the RPS units. 
8» The length of the wiring in the cabinet must be as short as possible. 
9» The length of the wiring from the E terminal of the Harmonic Filter to the Grounding Terminal must be as short as possible. 
10» The physical location of the Harmonic Filter and Varistor relative to the Contactor and Line Reactor is important. Connect these devices in the relative positions 
shown in this illustration. 
11» Because driving current of sequence input signals is 5mA and below, use a contact of which minimum applicable load is 5mA and below. 
12» Use the reactor in maximum surrounding air temperature of 55 degree C (131 degree F) and below. 





Wiring 4-7 


When Model 8720MC-RPS027 or 8720MC-RPS065 is operated in 
the Power Regeneration Mode only 
Figure 4.4 


Wiring Model 8720MC-RPS027 or 8720MC-RPS065 Unit 
Used as a Converter for the Power Regeneration Mode Only 











































































































ircui Inverter 
Bede (Load Equipment) 
(CB2) 
8720MC-RPS027 Reactor 
and —— —— TT O} L4 U O1 
8720MC-RPS065 
TO O| L2 VIO To AC Motor 
t —/00——340O | Ls W [O 
PIO 
Line Filter for < al: —À © 
AC Input Power a T Glo e 


3» 
4» 


6» 
7» 


8» 
9> 














8720MC-RPS ul (|| Protection Fuse <2 


Regenerative Power 
















































































































































































omy Main. Supply Unit 
Circuit Magnetic Dedicated for Power 
Breaker z Contactor. <9 Regeneration Mode) 
(CB1) Fuse Varistor | (mc1) Reactor 
“Te * * | HO O| L1 P/O 
oe} n + | E-—90—3À20 L2 N|O 
~ * * | E00 O| L3 G TTS 
1 
<0] Liaux 
O| L2AUX 
O| L3aux 
Harmonic] <7 è HEADY 
Filter PR1 
i RUN On/Off 
Single Phase E PR2 
Line Filter da e PWR A ovt . 
PR3 MC1 < 
NC O 
100 to 115 VAC 2 O Olmci MC |O- 4 
or 
200 to 230 VAC O| MC2 24V |Q 















































The phases of the AC input power to the main supply terminals L1, L2 and L3 must be same as those of the control power 
to the control power terminals L1AUX. L2aux and L3AUX. 

It is recommended to install the DC bus protection fuses on the both lines to the terminals P and N to prevent ground fault, 
when plural number of load equipment is connected to the 8720MC-RPS Regenerative Power Supply. 

Turn ON the switch SW7-1 on the Regulator Board without fail. 

Wiring to be taken into cabinet must be as short as possible. 

This connection is only used with AC input drives. 

The length of the wiring from the E terminal of the Harmonic Filter to the Grounding Terminal must be as short as possible. 
The physical location of the Harmonic Filter and Varistor relative to the Contactor and Line Reactor is important. 

Connect these devices in the relative positions shown in this illustration. 

Because driving current of sequence input signals is 5mA and below, use a contact of which minimum applicable load is 5mA and below. 
Use the reactor in maximum surrounding air temperature of 55 degree C (131 degree F) and below. 


It is possible to select the 8720MC-RPS units depending on the 
regenerative power when only regenerated power of the unit 
integrating converter and inverter is used. In this case, however, 
the following cautions must be observed. Figure 4.4 shows wiring 
of the 8720MC-RPS027 or 8720M C-RPS065 unit used as a 
converter for the power regeneration mode only. 


4-8 


Wiring 


Rating of regenerative power of the 8720MC-RPS is less than 
rated power both in the instantaneous rating and continuous 
rating. 


When rectifier portion of inverter is composed of thyristor, CR 
snubber circuit between anode and cathode of thyristor may 
become overloaded. Therefore, treating time for regenerative 
power must be within 5 seconds for 3 minutes. Because the 
current "Ic," flowing through CR snubber circuit in the power 
regeneration mode is represented by the following formula, 
verify the specifications of CR snubber circuit. 


L.[A] = (8 — 0.03 x R [Q]) x. /C [WF] 


Do not fail to connect ACL unit of 3% impedance toward 
inverter rating with the AC input line of inverter. Without ACL 
unit, excessive circulating current will flow between the 
8720MC-RPS units. 


Even during the power running, current will be supplied from 

the 8720MC-RPS unit to DC bus proportionally to the impedance 
ratio of both reactors at the 8720MC-RPS unit and inverter. This 
current must not exceed the rating of the 8720MC-RPS unit. 


Set the parameter of the FWD Current Limit (U.001) to zero (0). 


Set the parameter of the Discharging Function Enable (F.017) to 
zero (OFF). 


Set the DC bus voltage to start power regeneration to the 
parameter of the DC Bus Voltage Reference (U.000). 


Open all the terminals PR1, PR2 and PR3 for connecting 
precharge/discharge resistor. Because these terminals are open, 
the unit does not perform precharge/discharge operations. 
Precharge/discharge must be performed on inverter side. 


Do not fail to enter the READY signal of inverter to (PWR). 


Wiring 4-9 


When Model 8720MC-RPS027 and 8720MC-RPS065 are adapted 
to Capacitors having large capacity 


8720MC-RPS027 and 8720MC-RPS065 units charge to capacitors 
with a single phase, full-wave rectification circuit through the 
built-in precharge/discharge resistor. When the load capacitors 
have large capacitance, it takes more time for charging, and the 
wattage of the internal resistor becomes insufficient. When the 
load capacitance is large, disable the built-in precharge/discharge 
resistor and connect an external resistor or external circuit for 
precharging/discharging (Note that minimum precharging/ 
discharging cycle is 3 minutes). 


Calculate the rated wattage of the external precharge/discharge 
resistor to be connected to the outside in accordance with the 
following formula depending on the total capacitance of all the 
capacitors including the built-in capacitor. 


Rated wattage [W] 2 17000 x C[F] 
But, serge resistivity of J[J] = 28000 x C[F] must be provided. 


When an external precharge/discharge resistor is connected 
between PR1 and PR2, change the set value of the following 
parameters, if necessary. 


e  Precharge/Discharge Time (F.014) 
e Wattage of Precharge/Discharge Resistor (F.015) 


Table 4.5 
Maximum Applicable Capacitance of Capacitor and Minimum Resistance Value 




















8720MC-RPS027 8720MC-RPS065 
Capacitance of built-in Capacitor 990uF 1900uF 
Built-in Resistor (Resistance 4500uF 7000uF 
Value/Wattage) (33 ohm/80W) (22 ohm/120W) 
External Resistor (Minimum Resistance 55000uF 110000uF 
Value), Connect to PR1 and PR2 (30 ohm) (20 ohm) 
External Circuit (Minimum Resistance 82500uF 220000uF 
Value), Refer to figure 4.5 (10 ohm) (4.7 ohm) 





External resistor case 


Most applications are successfully integrated using the internal 
precharge resistor provided in the 8720MC-RPS Regenerative 
Power Supply. For instances where there is a large amount of load 
capacitance, caused by connecting several 8720MC drives to a 
single 8720MC-RPS Regenerative Power Supply, an external 
precharge resistor may be required. To determine the total 
capacitance C[F] add the capacitance for the applicable RPS027 or 
RPS065 unit, as determined from row 1 of Table 4.5, to the sum of 
the drive capacitance as determined by the drive specifications in 
Chapter 2 of the 8720MC-RPS User Manual, Publication 8720-UM- 
001-B-US-P FEB 2001. In the case of the RPSO27 if the total 
capacitance is above 4,500pf, but less than 55,000puf an external 
precharge resistor connected to PR1 and PR2 is required. In the 
case of RPS065 if the total capacitance is above 7,000uf but less 
than 110,000uf an external resistor connected to PR1 and PR2 is 


Wiring 


required. Table 4.5 provides the minimum resistance value for the 
external precharge resistor, 30 ohms in the case of the RPS027 and 
20 ohms in the case of the RPS065. The wattage [W] 1s determined 
by the equation presented above. Connect the external precharge 
resistor to terminals PR1 and PR2 on terminal block TB2. 

Terminal PR3 should be left open. See Chapter 2, Figure 2.1 under 
"Terminal Blocks on the Main Circuit". The Precharge/Discharge 
Time (F.014) may require a larger value to accommodate the 
increased precharge time. The Wattage of Precharge/Discharge 
Resistor (F.015) should also be increased to the external precharge 
resistor wattage. 


External circuit case 


In the case of the RPS027 if the total capacitance is above 55,000uf 
but less than 82,500uf an external precharge resistor connected as 
shown in Figure 4.5 must be provided. In the case of the RPS065 if 
the total capacitance is above 110,000uf but less than 220,000uf an 
external resistor connected as shown in Figure 4.5 must be 
provided. Table 4.5 provides the minimum resistance value for the 
external precharge resistor, 10 ohms in the case of the RPS027 and 
4.7 ohms in the case of the RPSO65. The wattage [W] is 
determined by the equation presented above. 


Figure 4.5 
Example of Wiring when Precharge/Discharge Circuit of the 8720MC-RPS027 or 
8720MC-RPS065 is configured with an External Circuit 





























































































































































































































































































































































































































PRI DER 
PR2 i 
PR3 | Thi 2 oe ean ee ee ete ee TB DC Output 
i l Jp Fuse 
5 <3 Giò LARA O + 
Fuse Varistor] MC eactor ' KUKKA L ko 
> + 4 | NM Lnd " Hi ' F D s De 
Power t oa ea not ti | | DISR 
5 I 1 jac I Edel zx 7 DIS 
Harmonic Filter | PR [DIS LI LH SSI : T 
E| i m *-] + * * * * 9 N 
i RCPB 
: Fuse 1 
i TB2l [e^t 7 i 
TAO * Es PIFS BDSR |: 
Leaux 6 
Leaux 4 
PR1|Ó 
" Precharge/ 
zi PR2 3 Di 
PR3 Oo Resistor_ MC 
MC1|- $— PWR MC 24V 
MC2[T. 
PWR MC 
DC Contactor <2 + 

















Ha -o m 1> Remove the jumper between PR2 and PR3. 
2> Because driving current of sequence input signals is 5mA and below, 
use a contact of which minimum applicable load is 5mA and below. 
3> Use the reactor in maximum surrounding air temperature of 
55 degree C (131 degree F) and below. 


Power for Sequence Circuit 


If a totally external resistor network is used as shown in Figure 4.5, 
the calculated wattage, [W] = 17,000 x C farads, is divided in half 
to size the precharge and discharge resistors. 


Wiring 4-11 


Parameter F.015 should be set to the sum of the wattage for both 
resistors. 


Installing Circuit Breaker 


To protect the AC input power, install a circuit breaker with 
supplemental contact (CB) in the AC input power line. Refer to 
Figures 4.1 to 4.3 for the wiring. The rated ampacities of the 
circuit breakers are as follows: 


For Model 8720MC-RPS027BM unit : 50 Amps 
For Model 8720MC-RPS065BM and 
8720MC-RPS065BS units : 100 Amps 


The following are the recommended circuit breakers with 
supplemental contact. 


For Model 8720MC-RPS027BM unit: 


Fuji Electric - SAI00BA/50WD 
BU3ESB-50 W (UL-listed)* 
Westinghouse - FDB3050* 


or equivalent 


For Model 8720MC-RPS065BM and 8720MC-RPSO65BS units: 


Fuji Electric - SAI00BA/100WD 
BU3ESB-100 W (UL-listed)* 
Westinghouse - FDB3100* 


or equivalent 


* Because supplemental contact of this circuit breaker does not 
conform with load of 5mA, relay with less than 5mA should be 
used for connection when a supplemental contact is connected 
with sequence input PWR. 


Be sure to provide required quantity of circuit breakers with 
supplemental contact (CB) for all units connected in parallel (see 
Figure 4.2 or 4.3). 


Installing Main Magnetic Contactor 


The 8720MC-RPS Regenerative Power Supply uses a magnetic 
contactor for turning the main power supply ON/OFF. Install and 
wire the main magnetic contactors as shown in Figure 4.1 to 4.4. 
After the RUN sequence signal entered and the precharge operation 
is completed, the main magnetic contactor will be turned ON. 
Conversely, when the RUN sequence signal is turned OFF, or when 
a fault occurs, the main magnetic contactor will be turned OFF and 
the discharge operation will begin. 


The following are the recommended main magnetic contactors. 
For Model 8720MC-RPS027BM unit: 


Allen-Bradley - 100-C23x10 or 100-C30x10 (CE 
marked) (where x is voltage suffix 
code of operating coil) 

Fuji Electric - SC-NI (UL listed component) 


For Model 8720MC-RPS065BM and 8720MC-RPSO65BS units: 


Allen-Bradley - 100-C43x10 (CE marked) (where x 
is voltage suffix code of operating 
coil) 

Fuji Electric - SC-N2S (UL listed component) 


(Select an adequate operating coil for the magnetic contactor 
within the range of 100 to 230 VAC depending on the used 
voltage.) 


Be sure to provide required quantity of magnetic contactors (MC) 
for all units connected in parallel (see Figure 4.2 or 4.3). 


Installing Reactor 





Regenerative Power Supply, the reactor is at a high 
temperature. Do not touch the reactor during 
operation or immediately after the unit has been 
turned OFF. Failure to observe this precaution could 
result in bodily injury. 


^ ATTENTION: During operation of the 8720MC-RPS 


Regenerative Power Supply, the reactor operates at a 
high temperature. Install the reactor in a location 
where high temperature does not present a problem. 


^ ATTENTION: During operation of the 8720MC-RPS 





The 8720MC-RPS Regenerative Power Supply boosts up and 
controls the DC bus voltage, by utilizing the magnetic 
characteristics of a reactor. Therefore, reactors are required for the 
8720MC-RPS Regenerative Power Supply. 


Install a single-phase type reactor to each of L,-phase, L5-phase and 
L3-phase. Do not use three-phase AC reactors, since this will cause 
unwanted coupling between the phases. 


The following inductance of the reactor must be maintained in a 
high frequency as 10 to 20 kHz. Note that use of a reactor for 
commercial power supply may not maintain the required 
inductance, resulting in increased heat generation or saturation due 
to iron loss. 


When multiple units are connected in parallel, a current unbalance 
between the units is produced due to variation of reactor 
inductance. To make the current difference between the connected 
units as small as possible, use reactors having a variation of no 
more than +/-2.5%. 


Wiring 4-13 


The following are the designated reactors. These reactors are 
integrated for three phases consisting of three single phase reactors. 
When selected reactors are installed, set their capacity to the 
parameter F.013. 


Model 8720MC-LR14-070B (1200 micro-henry): 
For Model 8720MC-RPS065BM and 
8720MC-RPSO65BS units that are used at 80 Amps or 
less (capacity of applicable motor is 37 kW or less) 


Model 8720MC-LR10-062B (1100 micro-henry): 
For Model 8720MC-RPS065BM and 
8720MC-RPSO65BS units that are used at 60 Amps or 
less (capacity of applicable motor is 30 kW or less). 


Model 8720MC-LRO5-048B (800 micro-henry): 
For Model 8720MC-RPS065BM and 
8720MC-RPSO65BS units that are used at 48 Amps or 
less (capacity of applicable motor is 22 kW or less). 


Model 8720MC-LRO03-032B (850 micro-henry): 
For Model 8720MC-RPS027BM, 8720MC-RPS065BM 
and 8720MC-RPSO65BS units that are used at 32 Amps 
or less (capacity of applicable motor is 15 kW or less). 





The reactor should operate in an ambient temperature of 50 degree 
C (122 degree F) or lower. If it is not avoidable to use a reactor 
above 50 degree C (122 degree F) , decrease current 196 for every 1 
degree C above 50 degree C. 


Select temperature rating of wire to connect a reactor as follows. 


For Model 8720MC-LR14-070B reactor used with current of 

60 Amps or lower, and for Model 8720MC-LR10-062B, 

8720MC-LR05-048B and 8720MC-LRO03-032B reactors, 
select a temperature rating 105 degree C (221 degree F) or 
higher. 


For Model 8720MC-LR14-070B reactor used with a current 
between 60 and 80 Amps, select a temperature rating 130 
degree C (266 degree F) or higher. 


Be sure to provide required quantity of reactors for all units 
connected in parallel (see Figure 4.2 or 4.3). 


Installing Varistor 


Install a varistor to absorb serge voltage between AC input power 
wires. The following is the designated varistor. 


For 8720MC-RPS027BM, 8720MC-RPS065BM and 
8720MC-RPS065BS units: 8720MC-VA-B 


Be sure to provide required quantity of varistors for all units 
connected in parallel (see Figure 4.2 or 4.3). Also be sure to 
connect the varistor on the incoming AC line side of the AC 
contactor. 


Wiring 


Installing Harmonic Filter 


Install an adequate harmonic filter as shown in Figure 4.1, 4.2 or 
4.3 to remove higher order harmonics generated by switching 
operation of Power Modules, from AC input power. Also be sure to 
connect the harmonic filter on the incoming AC line side of the AC 
contactor. The following are the designated harmonic filter and 
wire size. 


8720MC-HF-B2 


Wire size: 3.5 square millimeters 


Installing Input Fuses 


Install a fuse on the AC incoming power line. The following is the 
recommended fuse for the single unit. 
Gould A4J or equivalent (Class J Fuse) 


Rated current of fuse unit is shown in Table 4.6. 





Table 4.6 

Rated Current of Fuses for Unit 
Unit 8720MC-RPS027 8720MC-RPS065 
Rated Current 50 Amps 100 Amps 











The table assumes the maximum rated RPS current is required. The 
8720MC drive user manual, publication 8720-RMO01C-US-P 
provides fuse data for specific drive/RPS combinations in chapter 4. 


Also, as a measure against ground fault, install a fuse to protect the 
DC bus. The recommended fuses are as follows. 


For Model 8720MC-RPS065BM and 8720MC-RPSO65BS units: 
FERRAZ SHAWMUT A130URD70LIO100 


For Model 8720MC-RPS027BM unit: FERRAZ SHAWMUT 
A100P50-4 


Installing Line Filters 


If an 8720MC-RPS Regenerative Power Supply is used as a unit 
conforming with the requirements of CE Mark, install a line filter 
for AC input power on each AC incoming power line. Table 4.7 
shows the designated line filters for AC input power. The 
8720MC-RPS Regenerative Power Supply listed in Table 4.7 have 
CE marks. 





Table 4.7 

Designated Line Filter for AC Input Power 

8720MC-RPS 

Regenerative 8720MC-RPS065BM/ 

Power Supply Unit |8720MC-RPS065BS 8720MC-RPS027BM 
When units are used | Schaffner: FN3100-80-35 Schaffner: FN3100-35-33 
for both of the power | Soshin Electric: HF3080C-TOA | Soshin Electric: HF3030C- 
supply mode and TMA 

power regeneration 

mode 











Wiring 4-15 


Install also a line filter on single phase AC incoming power line for 
a main magnetic contactor. The following are designated single 
phase line filters: 


For Model 8720MC-RPS027BM, 8720MC-RPS065BM and 
8720MC-RPSO65BS units: 


Schaffner FN2010-6-06 or 
Soshin Electric NF2005A-YX 


Bus Bar and Output Fuses 


When multiple drives and/or master/slave RPS units are needed for 
a common bus application, bus bar is recommended. Size the bus 
bar to at least 175% of the total continuous RPS output current. 
The DC bus input wire and fuses to the drive can be sized to 175% 
of the drive continuous DC input current requirements. All fuses 
on the DC bus must be rated for 1,000 VDC operation. Use Gould 
A1-100P, Gould A1-100C (80 amps and higher) or equal. The 
8720MC drive user manual, publication 8720MC-RMO001C-US-P 
provides DC bus fuse data for specific drive/RPS combinations in 
chapter 4. 


4-16 Wiring 


AC Input Power Wiring 
for Model 8720MC-RPS190 





Regenerative Power Supply units using high speed 
switching elements generates noise regarding 
emission due to noise generated during switching. 
To avoid influence of such noise, it is very important 
to use as thick and short grounding wire as possible. 


^ ATTENTION: It is required to install a power 


^ ATTENTION: Equipment as the 8720MC-RPS 


disconnecting device, a main magnetic contactor, an 
AC reactor and a line filter in the AC input power 
line. Failure to observe these precautions could result 
in damage to, or destruction of, the equipment. 


is connected to AC input power line of 8720MC-RPS 
Regenerative Power Supply unit, large distortion may 
be produced in the AC input power voltage and the 
8720MC-RPS Regenerative Power Supply may not 
operate normally. Remove such large distortion from 
the AC input power voltage. 


^ ATTENTION: When a thyristor or similar equipment 





The capacity (rating) of the 8720MC-RPS Regenerative Power 
Supply unit depends on the number of units connected in parallel, 
i.e., single unit, two paralleled units, or three paralleled units. The 
relation between the number of paralleled units and the unit 
capacity is shown in Table 2.1. 


Figure 4.6 to 4.8 show typical connection of AC input power wiring 
for Model 8720MC-RPS190 unit. Figure 4.6 shows AC input 
power wiring for the single unit, and Figures 4.7 and 4.8 show AC 
input wiring for parallel connection of two units and three units 
respectively. Select appropriate ACL units (reactor assemblies), 
8720MC-EF190-VB EMC filter units, disconnects, etc., and 
installed them at the positions shown in these figures. 





Model 8720MC-RPS190 unit are operated, special 
care should be paid to the countermeasure against 
noise generated by each of the paralleled units during 
switching operation. If each of the paralleled units is 
installed in a separate cabinet, be careful for selection 
of cabinet and installation of the units. 


^ ATTENTION: When two or three paralleled units of 


must be kept below 40 degree C (104 degree F). 
Because Model 8720MC-RPS190 unit generates large 
amount of heat, exercise special caution for 
exhausting air. Also, be careful for selection of 
installation location of the 8720MC-EF190-VB EMC 
filter units. 


^ ATTENTION: The temperature inside the cabinet 





Wiring 4-17 


Figure 4.6 
Typical Connection of AC Input Power Wiring for Single Unit of 
Model 8720MC-RPS190 Unit 















































































































































































































































































































































































































































Circuit Fuse 8720MC-RPS 
Secker for  8720MC-EF-190-VB Regenerative Protection 
(CB) goner EMC Filter Unit Power Supply Unit Fuse 
y < 
L1 - 
ACL Unit 
8720MC-RPS190: © Ou nitL4 ¢ 
380 to 460 VAC © 
Oo 
(/ CN1 and CN2 of EMC 
Filter Unit 
Pin layout 
FMI-1 O 
B12345 | "7 O 
Aļ12345 e EY 
S O| pre ae e RUN On/Off 
Q| PR3 PWR |O rs 
O] 24V3 ov |O 
Terminals on ACL Unit «1 z SENE eM S 
O| 24V2 IP|O 
iic E obh O ov2 RDY|O 
a T c jc O|MC1 FR|O 
« [a] > |g |g O| MC2 FR|O 
Q-O 
FE 3 SSS 












































1> Refer to the figure at the lower left corner of this figure indicating the terminals on the ACL unit. When the fan 
inside the ACL unit is connected with an external power supply, do not fail to connect with the power supply 
designated by NEC Class 2 (Power supply limited to 100VA and below and 8A and below even in case of Error). 
Avoid the high voltage portion and the high temperature portion of the ACL unit when wiring the fan inside the 
ACL unit. 

2» The phases of the AC input power to the main supply terminals L1, L2 and L3 must be same as those of the control 
power to the control power terminals L1AUX, L2AUX and L3AUX. 

3» It is recommended to install the DC bus protection fuses on the both lines to the terminals P and N to prevent ground 
fault, when plural number of load equipment is connected to the 8720MC-RPS Regenerative Power Supply. 

4» Turn ON the switch SW7-1 on the Regulator Board without fail. 

5» Because driving current of sequence input signals is 5mA and below, use a contact of which minimum applicable 
load is 5mA and below. 

6» Use the ACL unit in maximum surrounding air temperature of 55 degree C (131 degree F) and below. 


4-18 Wiring 


Figure 4.7 
Typical Connection of AC Input Power Wiring for Two Paralleled Units of 
Model 8720MC-RPS190 Unit 


8720MC-RPS 
"ES Regenerative 
greuit or 8720MC-EF190-VB Power Supply 


(CB1) Ha EMC Filter Unit Unit (Master Unit) P rote ction 














OL1 ACL UnitL. 
































8720MC-RPS190: >, L2 
380 to 460 VAC L3 












































































































































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® 8720MC-RPS © 
_.. Fuse Regenerative 
Circuit for 8720MC-EF190-VB Power Supply 
pun EMC Filter Unit Unit (Slave Unit Protection 
L1 












































| S14 ACL Unit. 


CN1 and CN2 of EMC 
Filter Unit 































































































Pin layout 

















FMI-1 
Board 























B 
-A| 


















































Terminals on ACL Unit <1 



















































































am li 





R 
beg 
BL 
— 
Y 
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Short 
































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1> 


2> 


3> 


4> 
5> 


6> 


7> 


Wiring 4-19 


Refer to the lower left corner of Figure 4.7 indicating the terminals on the ACL unit. When the fan inside the ACL unit 
is connected with an external power supply, do not fail to connect with the power supply designated by NEC Class 2 
(Power supply limited to 100VA and below, and 8A and below even in case of Error). Avoid the high voltage portion 
and the high temperature portion of the ACL unit when wiring the fan inside the ACL unit. 

The phases of the AC input power to the main supply terminals L4, Lọ and L4 must be same as those of the control 
power to the control power terminals Laux, LoAux and Laux. 

It is recommended to install the DC bus protection fuses on the both lines to terminals P and N to prevent ground 
fault, when plural number of load equipment is connected to the 8720MC-RPS Regenerative Power Supply. 

Turn on the switch SW7-1 and SW7-2 on the Regulator Board without fail. 

Slave circuit breakers must be provided with an auxiliary contact as a safety interlock to the master. Use fuses with a 
slightly higher current rating also if your local code requires them. 

Because driving current of sequence input signals is 5mA and below, use a contact of which minimum applicable load 
is 5mA and below. 

Use the ACL unit in maximum surrounding air temperature of 55 degree C (131 degree F) and below. 


4-20 Wiring 


Figure 4.8 


Typical Connection of AC Input Power Wiring for Three Paralleled Units of 
Model 8720MC-RPS190 


eicit e 
Bresher Power 8720MC-EF-190-VB 


(CB1) Supply EMC Filter Unit 











8720MC-RPS190: 2 
380 to 460 VAC t 
Oo 



































8720MC-RPS 

Regenerative 
Power Supply Unit 

(Master Unit) 










































































Liaux (R1) 














Loaux (S1) 




















Laaux (T1) 
PH1 
PR2 
PR3 



































24V3 
0V3 

















SENS 























24V2 
ove 














MC1 


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Fuse 


Circuit _ for 
Breaker Power 8720MC-EF-190-VB 


(CB2) Supply EMC Filter Unit 


L1 
T L2 
i L3 



































MC2 

















Protection 
Fuse «3 
































RUN 
On/Off 





oo 


LW 
CB3 CB2 
<5,6 












































8720MC-RPS 
Regenerative 


Y 


Power Supply Unit Protection 
Slave Unit} 



























































Fuse «3 






































Liaux (R1) 














Leaux (S1) 




















Lanux (T1) 
PR1 
PR2 
PR3 






































24V3 
0V3 











SENS 
































24V2 








ove 








MC1 

















Fuse 


ircuit _ for 
cul Power8720MC-EF-190-VB 


(CB3) Supply EMC Filter Unit 
L1 







































































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MC2 


8720MC-RPS 

Regenerative 
Power Supply Unit 
(Slave Unit) 

















Protection 
Fuse «3 








































































































Terminals on ACL Unit <1 
































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2> 


3> 


4> 


5> 


6> 


7> 


Wiring 4-21 


Refer to the lower left corner of Figure 4.7 indicating the terminals on the ACL unit. When the fan 
inside the ACL unit is connected with an external power supply, do not fail to connect with the 
power supply designated by NEC Class 2 (Power supply limited to 100VA and below, and 8A and 
below even in case of Error). Avoid the high voltage portion and the high temperature portion of the 
ACL unit when wiring the fan inside the ACL unit. 

The phases of the AC input power to the main supply terminals L4, Lo and La must be same as 
those of the control power to the control power terminals Liayx, Leayx and Laux- 

It is recommended to install the DC bus protection fuses on the both lines to terminals P and N to 
prevent ground fault, when plural number of load equipment is connected to the 8720MC-RPS 
Regenerative Power Supply. 

Turn on the switch SW7-1, SW7-2 and SW7-3 on the Regulator Board without fail. 

Slave circuit breakers must be provided with an auxiliary contact as a safety interlock to the master. 
Use fuses with a slightly higher current rating also if your local code requires them. 

Because driving current of sequence input signals is 5mA and below, use a contact of which 
minimum applicable load is 5mA and below. 

Use the ACL unit in maximum surrounding air temperature of 55 degree C (131 degree F) and 
below. 


4-22 Wiring 


When Model 8720MC-RPS190 is operated in the Power 
Regeneration Mode only. 
Figure 4.9 


Wiring Model 8720MC-RPS190 Used as a Converter for 
the Power Regeneration Mode Only 























































































































































































































































































































= READY 
















































































































































































Inverter 
Circuit (Load Equipment) 
Breaker Fuse 3% ACL 
o T J0 
8720MC-RPS190: 
38010460 VAC O T 0 
Protectio 
+ Fuse 
Circuit 720MC-RP: Fuse «3 
Breaker oO. 8720MC-EF-190.VB Regenerative l 
ower EMC Filter Unit <1,6 Power Supply Unit 
Supply | 1 , 
L2 
79 L3 
(/ CN1 and CN2 of EMC 
Filter Unit 
Pin layout 
FMI-1 
Board 
B|12345 p 
A\12345 : 
O 
Ka O| PR1 O <5 
O| PR2 6 
LO] PR3 Ó Ee 
Terminals on ACL Unit — «1 s av 3 
Fan € O| SENS S 
o4 O| 24V2 
Ep E t'odb : p Q 
lal c lo O|MC1 O 
cla > m im O MC2 O 
C aT 
S 











1» Refer to the lower left corner of Figure 4.7 indicating the terminals on the ACL unit. When the fan inside the ACL unit 


is 


connected with an external power supply, do not fail to connect with the power supply designated by NEC Class 2 (Power 
supply limited to 100VA and below, and 8A and below even in case of Error). Avoid the high voltage portion and the high 


temperature portion of the ACL unit when wiring the fan inside the ACL unit. 
2» The phases of the AC input power to the main supply terminals L1, L2 and L3 must be same as those of the control 
to the control power terminals L1AUX, L2AUX and L3AUX. 


power 


3» It is recommended to install the DC bus protection fuses on the both lines to terminals P an N to prevent ground fault, when 


plural number of load equipment is connected to the 8720MC-RPS Regenerative Power Supply. 
4» Turn on the switch SW7-1 on the Regulator Board without fail. 


5» Because driving current of sequence input signals is 5mA and below, use a contact of which minimum applicable load is 


5mA and below. 
6» Use the ACL unit in maximum surrounding air temperature of 55 degree C (131 degree F) and below. 


Wiring 4-23 


It is possible to select the 8720MC-RPS units depending on the 
regenerative power when only regenerated power of the unit 
integrating converter and inverter is used. In this case, however, 
the following cautions must be observed. Figure 4.4 shows wiring 
of the 8720MC-RPS027 or 8720MC-RPS065 unit used as a 
converter for the power regeneration mode only. 


* Rating of regenerative power of the 8720MC-RPS is less than 
rated power both in the instantaneous rating and continuous 
rating. 


* When rectifier portion of inverter is composed of thyristor, CR 
snubber circuit between anode and cathode of thyristor may 
become overloaded. Therefore, treating time for regenerative 
power must be within 5 seconds for 3 minutes. Because the 
current "Ic," flowing through CR snubber circuit in the power 
regeneration mode is represented by the following formula, 
verify the specifications of CR snubber circuit. 


lealA] = (8 — 0.03 x R [Q]) x, /C [uF] 


* Do not fail to connect ACL unit of 3% impedance toward 
inverter rating with the AC input line of inverter. Without ACL 
unit, excessive circulating current will flow between the 
8720MC-RPS units. 


* Even during the power running, current will be supplied from 
the 8720MC-RPS unit to DC bus proportionally to the impedance 
ratio of both reactors at the 8720MC-RPS unit and inverter. This 
current must not exceed the rating of the 8720MC-RPS unit. 


* Set the parameter of the FWD Current Limit (U.001) to zero (0). 


* Set the parameter of the Discharging Function Enable (F.017) to 
zero (OFF). 


* Set the DC bus voltage to start power regeneration to the 
parameter of the DC Bus Voltage Reference (U.000). 


* Open all the terminals PR1, PR2 and PR3 for connecting 
precharge/discharge resistor. Because these terminals are open, 
the unit does not perform precharge/discharge operations. 
Precharge/discharge must be performed on inverter side. 


* Do not fail to enter the READY signal of inverter to (PWR). 


4-24 


Wiring 


When Model 8720MC-RPS190 is adapted to Capacitors having 
large capacity 


8720MC-RPS190 unit charges to capacitors with a single phase, 
full-wave rectification circuit through the built-in precharge/ 
discharge resistor. When the load capacitors have large 
capacitance, it takes more time for charging, and the wattage of the 
internal resistor becomes insufficient. When the load capacitance is 
large, disable the built-in precharge/discharge resistor and connect 
an external resistor or external circuit for precharging/discharging 
(Note that minimum precharging/discharging cycle is 3 minutes). 


Calculate a rated wattage of the external precharge/discharge 
resistor to be connected to the outside in accordance with the 
following formula depending on the total capacitance of all the 
capacitors including the built-in capacitor. 


Rated wattage [W] = 17000 x C[F] 
But, serge resistivity of J[J] = 28000 x C[F] must be provided. 


When an external precharge/discharge resistor is connected, change 
the set value of the following parameters, if necessary. 


e  Precharge/Discharge Time (F.014) 
e Wattage of Precharge/Discharge Resistor (F.015) 


Table 4.8 
Maximum Applicable Capacitance of Capacitor and Minimum Resistance Value 

















8720MC-RPS190 Unit 
Capacity of built-in Capacitor 7600uF 
Built-in Resistor (Resistance Value/Wattage) 25000uF 

(10 ohm/400W) 
External Resistor (Minimum Resistance Value), 165000uF 
Connect to PR1 and PR2 (10 ohm) 
External Circuit (Minimum Resistance Value), 495000uF 
Refer to figure 4.10 (1.5 ohm) 





External resistor case 


Most applications are successfully integrated using the internal 
precharge resistor provided in the 8720MC-RPS Regenerative 
Power Supply. For instances where there is a large amount of load 
capacitance, caused by connecting several 8720MC drives to a 
single 8720MC-RPS Regenerative Power Supply, an external 
precharge resistor may be required. To determine the total 
capacitance C[F] add the capacitance for the applicable RPS190 
unit, as determined from row 1 of Table 4.5, to the sum of the drive 
capacitance as determined by the drive specifications in Chapter 2 
of the 8720MC-RPS User Manual, Publication 8720-UM-001-B- 
US-P FEB 2001. In the case of the RPS190 if the total capacitance 
is above 25,000uf, but less than 165,000uf an external precharge 
resistor connected to PR1 and PR2 is required. Table 4.8 provides 
the minimum resistance value for the external resistor od 10 ohms. 
The wattage is determined by the equation presented above. 
Connect the external precharge resistor to terminals PR1 and PR2 





Wiring 4-25 


on the terminal block TB2. Terminal PR3 should be left open. 
See Chapter 2, Figure 2.2 "Terminals Blocks on the Main Circuit". 
The Precharge/Discharge Time (F.014) may require a larger value 
to accommodate the increased precharge time. The Wattage of 
Precharge/Discharge Resistor (F.015) should also be increased to 
the external precharge resistor wattage. 


External circuit case 


In the case of the RPS190 if the total capacitance is above 
165,000puf but less than 495,000uf an external precharge resistor 
connected as shown in Figure 4.10 must be provided. Table 4.8 
provides the minimum resistance value for the external precharge 
resistor, 1.5 ohms in the case of the RPS190. The wattage [W] is 
determined by the equation presented above. 


Figure 4.10 
Example of Wiring when Precharge/Discharge Circuit of the 8720MC-RPS190 is 
configured with an External Circuit 






































PR1 PRX 

PR2 i 

PR3 | 
BA AG 8720MC-EF190-VB 
(CB) Input EMC Filter Unit 












<4 8720MC-RPS190 DC Output 
Fuse 





L1 ACL Unit L4 O 






































l 
Fuse L1 
SS441B: L2 
AC 460V o ell 
SS4265: L 
ody 3 



































AC 230V 








































































































































































































































































































































































































«la| > lelg m 
(OA 
os O | Lraux (R1) 
WHT 
AE z BLU TO | Leaux (S1) <2 
F g O| L3aux (T1) | BDSR-1 MCX 
O| PR1 O 
1 |O| PR2 M 
*! [O] pps RST|O PWR 
I PWR|O , 
PWR MCX O| 24V3 ov| O 
rág O| 0v3 24V | O 
PRX O| SENS COM] O 
+— 0 DC O| 24v2 IP|O 
MC Contactor 0V3 Ol ove RDY|O 
MC. sENSout O| MCI FR O 
—— Fit O| MC2 FRLO 
L | Relay for controlling 
DC 24V | 
Power for Sequence Circuit E contro 


1> Remove the jumper getween PR2 and PR3. 











2» Use arelay with contact of which minimum applicable load is 5 mA and below. 

3» Refer to the figure at the lower left corner of this figure indicating the terminals on the ACL unit. When the fan 
inside the ACL unit is connected with an external power supply, do not fail to connect with the power supply 
designated by NEC Class 2 (Power supply limited to 100VA and below and 8A and below even in case of Error). 
Avoid the high voltage portion and the high temperature portion of the ACL unit when wiring the fan inside the 


ACL unit. 


4» Use the ACL unit in maximum surrounding air temperature of 55 degree C (131 degree F) and below. 


4-26 


Wiring 


If a totally external resistor network is used as shown in figure 
4.10, the calculated wattage, [W] = 17,000 x C farads, is divided in 
half to size the precharge and discharge resistors. 

Parameter F.015 should be set to the sum of the wattage for both 
resistors. 


Installing Circuit Breaker - 8720MC-RPS190 


To protect AC input power, install a circuit breaker with 
supplemental contact (CB) in the AC input power line. Refer to 
Figures 4.6 to 4.8 for wiring. The rated ampacities of the circuit 
breakers are as follows: 


For Model 8720MC-RPS190BM and 8720MC-RPS190BS units: 
350 Amps 


The following are the recommended circuit breakers with 
supplemental contact. 


For Model 8720MC-RPS190BM and 8720MC-RPS190BS units: 


Fuji Electric - BU-KSB3350LW 
Westinghouse - KDB3350 
or equivalent 


Because supplemental contact of this circuit breaker does not 
conform with load of 5mA, relay with less than 5mA should be 
used for connection when a supplemental contact is connected with 
sequence input PWR. 


Be sure to provide required quantity of circuit breakers with 


supplemental contact (CB) for all units connected in parallel (see 
Figures 4.6 and 4.7). 


Installing ACL Unit (Reactor Assembly) - 8720MC-RPS190 





Regenerative Power Supply, the reactor is at a high 
temperature. Do not touch the reactor during 
operation or immediately after the unit has been 
turned OFF. Failure to observe this precaution could 
result in bodily injury. 


^ ATTENTION: During operation of the 8720MC-RPS 


Regenerative Power Supply, the reactor operates at a 
high temperature. Install the reactor in a location 
where high temperature does not present a problem. 


^ ATTENTION: During operation of the 8720MC-RPS 





The 8720MC-RPS Regenerative Power Supply boosts up and 
controls the DC bus voltage, by utilizing the magnetic 
characteristics of reactor. Therefore, reactors are required for the 
8720MC-RPS Regenerative Power Supply. 


Install a single-phase type reactor to each of L,-phase, L>-phase and 
L3-phase. Do not use three-phase AC reactors, since this will cause 
unwanted coupling between the phases. 


Wiring 4-27 


The following inductance of the reactor must be maintained in a 
high frequency as 10 to 20 kHz. Note that use of a reactor for 
commercial power supply may not maintain the required 
inductance, resulting in increased heat generation or saturation due 
to iron loss. 


When multiple units are connected in parallel, a current unbalance 
between the units is produced due to vibration of reactor 
inductance. To make the current difference between the connected 
units as small as possible, use reactors having a vibration of no 
more than +/-2.5%. 


The following are the designated reactors. These reactors are 
integrated for three phases consisting of three single phase 
reactors. Depending on the motor capacity, single unit of the 
designated reactor is used or two units of reactors connected in 
parallel are used as shown below. When selected reactors are 
installed, set their capacity to the parameter F.013. 


One (1) Model 8720MC-LR10-100B (800 micro-henry): 

For Model 8720MC-RPS190BM and 8720MC-RPS190BS that 
are used at 100 Amps or less (capacity of applicable motor is 65 
kW or less) 


Two (2) Model 8720MC-LR10-100B (800 micro-henry) 
connected in parallel: 

For Model 8720MC-RPS190BM and 8720MC-RPS190BS that 
are used at 190 Amps or less (capacity of applicable motor is 
125 kW or less) 


Cooling fan and thermoswitch are mounted on the ACL unit. The 
thermo switch opens at about 150 degree C (302 degree F) and 
produces a reactor fan fault signal. 


The reactor should operate in an ambient temperature of 50 degree 
C (122 degree F) or lower. If it is not avoidable to use a reactor 
above 50 degree C (122 degree F), decrease current 1% for every 1 
degree C above 50 degree C. 


Select temperature rating of 105 degree C (221 degree F) or higher 
for the wire to connect Model 8720MC-LR10-100B reactors. 


Installing Fuses - 8720MC-RPS190 


Install a fuse on the AC incoming line. The following is the 
recommended fuse for the single unit. 


FERRAZ SHAWMUT or equivalent (Class J Fuse) 


Rated current of the fuse for Model 8720MC-RPS190 is 350 
Amps. 


Also, as a measure against ground fault, install a fuse to protect the 
DC bus. The recommended fuses are as follows: 


For Model 8720MC-RPS190BM and 8720MC-RPS190BS 
units: FERRAZ SHAWMUT, A130URD71LLIO350 


4-28 


Wiring 


Installing 8720MC-EF190-VB EMC Filter Unit 


The 8720MC-EF190-VB EMC filter unit contains line filter, 
magnetic contactor, varistor and harmonic filter, and are used for 
Model 8720MC-RPS190BM and 8720MC-RPS190BS units. 
Because the 8720MC-EF190-VB unit is completely assembled, 
wiring can be simplified in combination with Model 8720MC- 
LR10-100B reactor, and also the space to be required can be 
reduced considerably. 


The recommended wire sizes for proper wiring to the main power 
terminals of 8720MC-EF190 EMC filter unit are shown in Table 


4.9. 


Table 4.9 


Recommended Power Wire Sizes for the 8720MC-EF190-VB Unit 

















Terminal Name | Symbol |Screw Size Wire Size Attached Lug ? 
Main Terminals |L1, L2, L3 M8 Larger than 38 mm? | JST, R38-8 (M8) 
(Input) - 2 in parallel (6 Pieces) 
(AWG #2 - 2 in 
parallel) 
Main Terminals |L4, L5, L6 M10 Larger than 38 mm? | JST, R38-10 (M10) 
(Output) - 2 in parallel (6 Pieces) 
(AWG #2 - 2 in 
parallel) 
Grounding G M8 Larger than 38 mm? | JST, R38-8 (M8) 
Terminal (Earth) (AWG #2) (1 Piece) 











(? UL-listed wires must be lugged by attached lugs. 
JST is Japan Solderless Terminal Co. 


For wiring the 8720MC-EF190-VB unit, refer to Figures 4.6 to 4.8. 


Installing DC Bus Power 
Output Wiring - All RPS 
units 


Grounding the 8720MC-RPS 
Regenerative Power Supply 


Wiring 4-29 





number of external load equipment, the user is 
responsible for installing fuses to protect the DC bus 
from shorting, if no fuse is provided in the load 
equipment. Failure to observe this precaution could 
result in damage to, or destruction of, the equipment 


^ ATTENTION: When connecting the DC bus to plural 


of wiring when wiring DC bus. Failure to observe 
this precaution could result in damage to, or 
destruction of, the 8720MC-RPS Regenerative Power 
Supply and the connected load equipment. 


^ ATTENTION: Exercise extreme caution for polarity 





The DC bus output terminals on the main power terminal block 
(TB1) or the DC bus terminal bars of the 8720MC-RPS 
Regenerative Power Supply are used for connecting to load 
equipment such as inverter. Use the recommended wire size shown 
in Tables 4.1 to 4.3 for wiring between the 8720MC-RPS 
Regenerative Power Supply and the load equipment. Connect the 
terminal P on the main power terminal block (TB1) or the terminal 
bar P of the 8720MC-RPS Regenerative Power Supply to the 
positive (plus) DC bus terminal of the load equipment, and the 
terminal N on the terminal block TB1 or the terminal bar N to the 
negative (minus) DC bus terminal of the load equipment. Do not 
connect the positive (plus) side with the wiring of the negative 
(minus) side. Such miswiring will damage the 8720MC-RPS 
Regenerative Power Supply and the connected load equipment. 


When multiple drives are connected to the 8720MC-RPS 
Regenerative Power Supply, always install input fuses before each 
drive to protect the wiring and the drive. Select adequate fuse(s) 
for the drives. 


Connect an adequate equipment grounding conductor to ground 
terminal of load equipment, remote control station (if used), input 
transformer (if used), and ground terminal of the 8720MC-RPS 
Regenerative Power Supply. Run earth conductor to earth ground 
after confirming that the conductors are unbroken. 


This system is operated by switching DC bus line from + (plus) bus 
voltage to - (minus) bus voltage viewing from the ground for the 
purpose of controlling. For this reason, plus and minus voltages are 
always added on a circuit if equipment has a circuit between the bus 
line of equipment to be connected and the ground (earth). Even if 
there exists no direct circuit between the bus line and the ground, 
pulse current will flow through the stray capacity of the equipment 
by bus voltage switching. When 8720MC-RPS and equipment to be 
connected to 8720MC-RPS are not securely grounded, this current 
will flow through the circuit and may cause malfunction of them. If 
grounding is not made properly, it will cause the malfunction of the 
other system on the same line. 


Install an insulating transformer to the input line of the 8720MC- 
RPS if unbalanced current flows and earth leakage breaker 
malfunctions due to the power supply conditions. 


For grounding, use the wire size of grounding terminal as shown in 
Table 4.1 through 4.3. 


4-30 Wiring 


Wiring To Comply with EMC 


To declare the conformity with the requirements for CE Mark, 
8720MC-RPS Regenerative Power Supply must comply with both 
EMC directive and low voltage directive. This section describes 
notes on wiring to comply with EMC directive. 


Important: 8720MC-RPS Regenerative Power Supply itself is not 
subject to Machine directive. When 8720MC-RPS Regenerative 
Power Supply is combined with other equipment, control cabinet 
and machine, it is needed to declare the compliance with Machine 
directive. Noise level will vary depending on the installation and 
wiring of 8720MC-RPS Regenerative Power Supply, other 
equipment and control cabinet. It has been already confirmed that 
8720MC-RPS Regenerative Power Supply complies with EMC 
standards only when 8720MC-RPS Regenerative Power Supply is 
composed of the component parts designated by Reliance Electric. 
In order for users to declare the conformity with the requirements 
for CE Mark, do not fail to confirm that the unit complies with 
EMC standards on the final conditions after completion of 
installation and wiring. 


The following show with which EMC standards each of the 
8720MC-RPS Regenerative Power Supply complies. 


8720MC-RPS027 EN61800-3:1996 including 
Amendment A11:2000 
8720MC-RPS065 EN55011:1991 Group 1, Class A, and 


Amendment A1:1999 
EN50082-2:1995 
8720MC-RPS190 EN61800-3:1996 including 
Amendment A11:2000 





Wiring must be made taking into consideration of the following 
countermeasures since there is the possibility that input and output 
lines of the 8720MC-RPS Regenerative Power Supply may yield 
strong noise. 


1. Use a control cabinet made of metal for installing the 8720MC- 
RPS Regenerative Power Supply (It has been confirmed that 
this unit complies with EMC standards when installed inside the 
control cabinet). 


2. Install a line filter designated by Reliance Electric to the power 
input line of the 8720MC-RPS units. Wiring to the line filter 
must be as short as possible. 


3. Because current will leak to the earth when a line filter is 
installed, connection to the earth must be secured. Due to 
leaked current, the earth leakage breaker may malfunction. 
Select a proper breaker complying with leaked current (Rated 
current 100 to 500mA and operating time within 0.1 to 2 
seconds). 


4. The control cabinet must be securely grounded. Wiring to be 
taken into grounding terminal of the control cabinet must be as 
thick and short as possible. 


Wiring 4-31 


The input and output line of the 8720MC-RPS units must be 
separated from the output line of the inverter unit as far as 
possible. 


Wiring of the control signal must be terminated within the 
control cabinet. Should the control cable be needed to extend 
out of the control cabinet, it is recommended to use shielded 
cables. When ferrite cores are used, install them possibly to the 
side of the 8720MC-RPS units. The following are the ferrite 
cores for the control cables recommended. 


ZCAT2032-0930 (Inside diameter 9 +/- 1mm) : TDK 
ZCAT2035-1330 (Inside diameter 13 +/- 1mm) : TDK 
For notes on wiring to the other equipment and motors to be 


connected with the 8720MC-RPS, refer to the manuals of 
relevant equipment. 


4-32 Wiring 


Sequence Signal Wiring Figure 4.11 shows a typical connection of sequence control signals. 


Figure 4.11 
Typical Connection of Sequence Control Signals 


Terminal Block TB3 of 8720MC-RPS 
Regenerative Power Supply Unit Unit 























4.64K yK Load Equipment 








RDY RDY O E 





FR 


l To an external error detection sequence circuit 
FR 





8720MC-RPS Unit 


> 








O 





Sequence Signal Wiring 


Verify the following when installing sequence signal wiring: 


Twisted pair wires of 0.2 to 0.5 mm? should be used for the 
signal line. 


Verify that the sequence signal wiring is separated from the 
power wiring (main power supply wiring, control power wiring 
and DC bus power wiring). Malfunction of the 8720MC-RPS 
Regenerative Power Supply is possible if the control wires 

are separated from the AC and DC power wires. 

Use a separate duct for the sequence signal wiring. It is 
recommended to use a dedicated duct for the sequence signal 
wiring. 

Do not route the sequence signal wiring near any equipment 
which is producing electromagnetic interference. 


DC Bus Voltage 


Main Magnetic 
Contactor (MC) 


PWR Input 


RST Input 


RDY Output 


FR Output 


IP Output 


DC Bus Voltage 
Main Magnetic 
Contactor (MC) 
PWR Input 
RST Input 

RDY Output 


FR Output 


IP Output 


On 
Off 


On 
Off 


On 
Off 


Open 
Close 


Open 
Close 


Open 
Close 


On 
Off 


On 
Off 


On 
Off 


Open 
Close 


Open 
Close 


Open 
Close 


Wiring 4-33 


Operation Timing of Sequence Control Signals 


Figures 4.12 through 4.17 show timing of various sequence control 
signal operations. 


Figure 4.12 
Sequence Operation of Precharging 





Figure 4.13 
Sequence Operation of Discharging 





4-34 Wiring 


Figure 4.14 
Sequence Operation of Error Detection 


DC Bus Voltage 


Main Magnetic On 
Contactor (MC) Off 


On 
PWR Input Off 
On 
RST Input Off 
Open 
RDY Output Close 


Open 
FR Output — Close 





Open "E, 
IP Output — Close 1! 


Figure 4.15 
Sequence Operation of Resetting Error 


DC Bus Voltage 


Main Magnetic On 
Contactor (MC) Off 


On 
PWR Input Off 


On 
RST Input Off 


Open 


RDY Output — Close 


Open 
FR Output — Close 


Open 
IP Output — Close 





DC Bus Voltage 


Main Magnetic 
Contactor (MC) 


PWR Input 


RST Input 


RDY Output 


FR Output 


IP Output 


DC Bus Voltage 


Main Magnetic 
Contactor (MC) 


PWR Input 


RST Input 


RDY Output 


FR Output 


IP Output 


Wiring 4-35 


Figure 4.16 
Sequence Operation of Detecting Instantaneous Power Loss 
(When Main Magnetic Contactor is not Turned OFF) 


On 
Off 


On 
Off 


On 
Off 


Open 
Close 


Open 
Close 


Open 
Close 





Figure 4.17 
Sequence Operation of Detecting Instantaneous Power Loss 
(When Main Magnetic Contactor is Turned OFF) 








PWM-ON Inst. PWM-OFF Precharge PWM-ON 








On 
Off 


On 
Off 


On 
Off 


Open 
Close 


Open 
Close 


Open 
Close 





4-36 


Wiring 


Installing Ribbon Cables 


Un 


it 3 (Slave Unit 2) 


Ribbon cables are used for connecting: 


* Between Regulator Board (BDSR) and Power Interface Board 
(PIFS), 
* Between Power Interface Boards (PIFS). 


For a single unit or for master unit with multiple units connected in 
parallel, the Regulator Board is connected to the Power Interface 
Board with a ribbon cable. Also, ribbon cable is used for 
connection between the Power Interface Boards of the master unit 
and the slave unit, and between the Power Interface Boards of the 
slave units. 


Figure 4.18 shows typical connection with ribbon cables. 


When multiple units are connected in parallel, the master unit must 
be installed at the rightmost end viewed from the front side as 
shown in Figure 4.18. 


Figure 4.18 
Wiring with Ribbon Cables 


Unit 2 (Slave Unit 1) Unit 1 (Master Unit) 


































































































































































































Parallel Connection 


of 3 Units 


(8720MC-RPSO65BS or 


87 


20MC-RPS190BS) 


, "LU 
BDSR 
' I I 
CN3 CN2 CN3 CN2 i CN3 CN2 
CN1 CN1 i CN1 
PIFS PIFS ' PIFS 








Parallel Connection 
of 2 Units 
(8720MC-RPSO65BS or 
8720MC-RPS190BS) 


Single Unit 
(8720MC-RPS027BM, 
8720MC-RPSO65BM, 

or 8720MC-RPS190BM) 


Note: In case two or three units of 8720MC-RPS Regenerative Power Supply Unit are installed in parallel, 
the master unit must be installed at the rightmost end as shown in the above. 


Notes on Wiring 


Wiring 4-37 


8720MC-RPS units comply with the requirements of CE Mark and 
a Declaration of Conformity was issued for these units. Insert the 
specified line filter into the power supply line if these units are used 
as the units conforming to the requirements of CE Mark. 


Caution must be paid to the following when performing wiring: 


* Because instantaneous large power is required at overload, 
provide sufficient AC power supply facility having a smaller 
voltage fluctuation to prevent the input voltage from dropping 
below the minimum specified requirement. 


* The 8720MC-RPS Regenerative Power Supply does not contain a 
circuit breaker. Install an adequate circuit breaker on the AC 
input power line (see Sections "Installing Circuit Breaker" in this 
chapter). When an earth leakage breaker is used, select a breaker 
equipped with harmonic suppressor. 


e The phases of the main terminals L,, Lọ and L4 must be same as 
the phases of the control power terminals Li aux, LoAux and 
L3aux- Failure to keep the phase relationship the same will cause 
malfunction of the 8720MC-RPS Regenerative Power Supply. 


* Completely separate the sequence control signal wiring from the 
power wiring, and do not put the both into a same duct. Also, 
do not route the both wires in parallel. 


* To prevent noise problem, peripherals of the 8720MC-RPS 
Regenerative Power Supply such as magnetic contactors and 
relays must be provided with adequate surge suppressor, such as 
CR filter for AC circuit and inverse-parallel diodes for DC 
operation circuit. 


* Install a varistor for absorbing surge between AC input wires 
and a specified harmonic filter for reducing higher order 
harmonics generated by fast switching. 


* When wiring is finished, check that all the wiring has been 
connected correctly before supplying power. 


4-38 Wiring 


End of Chapter 


Checking before Powering 
up the 8720MC-RPS 
Regenerative Power Supply 


Chapter 5 


Start and Adjustment 


This chapter provides instructions on how to perform a final check 
before power is applied to the 8720MC-RPS Regenerative Power 
Supply, how to power up the unit and how to operate the unit. 





A 


A 


A 
A 


ATTENTION: Only qualified electrical personnel 
familiar with the construction and operation of this 
equipment and the hazards involved should install, 
adjust, operate, or service this equipment. Read and 
understand this manual in its entirety before 
proceeding. Failure to observe this precaution could 
result in destruction of the equipment, severe bodily 
injury or loss of life. 


ATTENTION: DC bus capacitors retain hazardous 
voltages after input power has been disconnected. 
After disconnecting power, wait for a while for the 
DC bus capacitors to discharge and then check the 
voltage with a voltmeter to ensure the DC bus 
capacitors are discharged before touching any internal 
components. Failure to observe this precaution could 
result in severe bodily injury or loss of life. 


ATTENTION: Be sure that the input disconnect 
(breaker) is in the correct position either ON or OFF 
depending on the work to be performed. Failure to 
observe this precaution could result in severe bodily 
injury or loss of life. 


ATTENTION: A back up technician must be in line 
of sight when this work is performed, to assist in case 
of emergency. Failure to observe this precaution 
could result in severe bodily injury or loss of life. 





This section describes the procedure to perform a final check before 
powering up the 8720MC-RPS Regenerative Power Supply. 


Verifying the Installation 


Confirm the following points of the installation before powering up 
the 8720MC-RPS Regenerative Power Supply: 


* Check that no foreign materials such as wire fragments and 
screws are left inside the unit. 


5-2 Start and Adjustment 


Powering up the 8720MC-RPS 
Regenerative Power Supply 


e Verify that there is no debris such as metal shavings around the 
unit. 


* Check that there is adequate clearance around the unit. 


Verifying the Rating of the 8720MC-RPS Regenerative Power 
Supply 


Before powering up the 8720MC-RPS Regenerative Power Supply, 
check the following: 


e Check the unit's nameplate and confirm that the installed 
8720MC-RPS Regenerative Power Supply has an enough rating 
for the load. 


* Check that the incoming power is rated correctly for the rating 
of the 8720MC-RPS Regenerative Power Supply. 


* Check that the disconnect (breaker) and the fuses provided for 
the branch circuit protection are rated correctly. 


* Check that the AC reactor is rated correctly. 


Verifying Wiring 


Check the following before powering up the 8720MC-RPS 
Regenerative Power Supply: 


* Verify that the 8720MC-RPS Regenerative Power Supply was 
installed rigidly. 


* Check that there is no miswiring. 
* Check that no terminals or connection are loose. 


* Verify that there are no short circuits with regard to the 
terminals L;, L5, L4, P, N and G. Also verify that there are no 
ground faults with regard to these terminals except terminal G. 


e Check that the terminals LiAux, LoAux and LaAux are not 
shorted. 


e Verify that the electronic size is within the specification range 
and the wire 1s tightened correctly. 


e Verify that the operations of the sequence control signals are 
normal. 


Use the following procedure to turn power to the 8720MC-RPS 
Regenerative Power Supply ON: 


Step l. Turn the RUN sequence signal OFF. 
Step 2. Turn the input power breaker to the ON position. 


Step3. Apply power to the 8720MC-RPS Regenerative Power 
Supply. 


Operating the 8720MC-RPS 
Regenerative Power Supply 


Start and Adjustment 5-3 


Step 4. Verify that the unit powers up properly without incident 
such as abnormal sound or nasty smell. 


Step 5. Verify that there is no input power voltage drop or short 
circuit. 

Step 6. Verify that the rating of the 8720MC-RPS Regenerative 
Power Supply matches the parameter setting of the Unit 
Selection (F.001). 

For Step 6, more information will be given in the section 


"Operating the 8720MC-RPS Regenerative Power Supply" in this 
Chapter. 


This section describes the following basic start-up and operation 
procedure: 


* Powering up 

e Precharging 

e Verifying the parameter of the Unit Selection 
* Checking the DC bus voltage 

* Changing the DC bus voltage reference value 
e Discharging 


* Disconnecting power 


This start-up procedure describes how to set the minimum set of 
parameters. Your application may require programming other 
parameters in addition to those described in this start-up 
procedure. Refer to Chapter 8 for description of all parameters to 
verify whether you need to program any additional parameters as 
well. 


In this manual, you will see references to parameters names and the 
numbers that identify them for the 8720MC-RPS Regenerative 
Power Supply. This manual uses the same format that will be 
shown on the display to refer to parameters: 


U.nnn 
F.nnn 


where: nnn is a number 
U designates User parameters 
F designates Factory parameters. 


Start and Adjustment 


Step 1. Power Up the 8720MC-RPS Regenerative Power 
Supply 


This step verifies that the 8720MC-RPS Regenerative Power 
Supply powers up and passes the power-up self-diagnostics. After 
the unit passes the diagnostics, the operation panel automatically 
enters monitor mode, with input current displayed. 





Step 1.1 Turn power ON. 





The initial display shows SELF, 
with all six status LEDs ON, 
indicating the unit is performing 
power-up self-diagnostics. 














After the diagnostics are 
complete (approx. 0.5 seconds), 
the operation panel is in 
monitor mode. The display 
shows input current value, and 
the "A" status LED turns ON. 
This display shows that the 
input current is 0 Amp. 























Step 2. Verifying the Parameter of the Unit Selection 


In this step, you will verify that the unit rating matches the 
parameter setting of the Unit Selection. 





Step 2.1 Press the PRG key. 


The operation panel changes to 
program mode and the 
"PROGRAM" status LED turns 
ON. The display shows "U.---" 
indicating you can access the 
User parameters. 




















The display shows "F.---" 
indicating that the Factory 
parameters can be accessed. 

















The display shows the first 
Factory parameter (F.000). 

















Start and Adjustment 5-5 





Step 2.4 Press the V key. 














The display indicates the second 
Factory parameter. 




















The display shows that 37 KW 
(65 Amps.) unit for 460 V is 
selected. If the display does not 
match the actual unit rating, 
first set the password (F.000), 
and then set again the Unit 
Selection conforming to the unit 
rating (refer to the section 
"Factory Parameters" in Chapter 
T). 





Step 2.6 Press the PRG key. 














The display indicates the second 
Factory parameter (F.001). 

















The display shows "F.---" 
indicating that you can access 
the Factory parameters. 


























The operation panel returns to 
monitor mode again. The 
display indicates the input 
current and the "A" status LED 
turns ON. This display shows 
the input current is 0 Amp. 


5-6 


Start and Adjustment 


Step 3.  Precharging 


In this step, you will turn the RUN sequence control signal ON. 
When the RUN sequence signal is enabled, the 8720MC-RPS 
Regenerative Power Supply will start precharge operation. When 
precharge operation is completed, the main magnetic contactor will 
be turned ON and the PWM switching will begin. 





Step 3.1 Turn the RUN sequence signal ON. 





The precharge operation starts. 
When the precharge operation is 
completed, the main magnetic 
contactor is turned ON and the 
PWM switching starts. When 
the precharge operation is 
finished, the DC bus voltage 
goes up to the reference value. 
This displays the input current 
is 5 Amps. 














Step4. Verifying DC Bus Voltage 


When PWM switching begins and controlling the DC bus voltage 
starts, the DC bus voltage will be maintained at the reference value 
(U.000). Then, you will verify that the DC bus voltage value is 
same as the reference value. 





Step 4.1 Press the W key. 


The display shows AC input 
power voltage, with the "V" 
status LED turned ON. This 
display indicates that the input 
power voltage is 412 V. 

















The display indicates the DC 
bus voltage and the "V" status 
LED turns ON. This display 
shows that the DC bus voltage 
is 748 V. 























Start and Adjustment 5-7 





Step 5. Changing the DC Bus Voltage Reference Value 


The default value of the DC Bus Voltage Reference (U.000) is 

750 V. This procedure assumes that the DC Bus Voltage Reference 
value is to be changed to 650 V. In the actual procedure, use the 
value of your application. 





Step 5.1 Press the PRG key. 


The operation panel is now in 
program mode, and the 
"PROGRAM" status LED is 
ON. The display shows "U.---" 
indicating that the User 
parameters can be accessed. 




















The display shows the first User 
parameter, U.000. 














The display indicates the value 
of the DC bus Voltage 
Reference (U.000). The default 
value is 700 V. 























display shows 650. 


Pressing the W key decrements 
the value on the display. 
Holding down the W key will 
increase the scroll speed. 


When the display shows 650, 
stop pressing the W key. If you 
desire to increase the set value, 
press the A key. 




















Step 5.5 Press the ENT key. 


The set value is decided and is 
written to the EEPROM. After 
pressing the ENT key, the 
display returns to the first User 
parameter (U.000), indicating 
that the set value has been 
decided. 

















5-8 


Start and Adjustment 





Step 5.6 Press the PRG key. 


The display shows "U.---" 
indicating that the User 
parameters can be accessed. 




















The operation panel returns to 
monitor mode, and the display 
indicates the input current, with 
the "A" status LED turned ON. 
This display shows that the 
input current is 5 Amps. 














The display shows the AC input 
power voltage and the "V" 
status LED turns ON. This 
display shows that the input 
power voltage is 412 V. 

















The display indicates the DC 
bus voltage and the "V" status 
LED turns ON. Verify that the 
DC bus voltage is almost same 
as the reference value (U.000). 

















Step 6. Discharging 


In this step, you will turn the RUN sequence signal OFF. When the 
RUN sequence signal is turned OFF, the 8720MC-RPS 
Regenerative Power Supply starts discharge operation, stops the 
PWM switching and turns magnetic contactor OFF. 





Step 6.1 Turn the RUN sequence control signal OFF. 


The discharge operation starts, 
and the PWM switching stops. 
Turn the main magnetic 
contactor OFF. When the 
discharge operation is 
completed, the DC bus voltage 
drops to 50 V or lower. The 
display shows the DC bus 
voltage is 12 V. 

















Start and Adjustment 5-9 


Step 7. Disconnecting Power to the 8720MC-RPS 
Regenerative Power Supply 


As the final step, disconnect power to the 8720MC-RPS 
Regenerative Power Supply. 





Step 7.1 Disconnect input power. 


Power to the Regulator Board is 
turned OFF, and the display and 
the LEDs are turned OFF. But 
when you desire to touch the 
internal portion of the 8720MC- 
RPS Regenerative Power 
Supply, pay extreme caution to 
the DC bus voltage which might 
be retained. 

















5-10 Start and Adjustment 


End of Chapter 


Configuration of the Operation 
Panel 


Operation Modes 





Chapter 6 


Operation Panel 


This chapter describes the configuration of operation panel and the 
operation modes. 


The operation panel is used for setting parameters, monitoring 
operating conditions and resetting faults. The figure below shows 
the configuration of the operation panel and the names of the 
components. 


Status LED Display 
































Keypad 


On the keypad of the operation panel, there are five push-button 
switches, to be used for selecting monitoring information, setting 
parameters and resetting faults. 


The display on the operation panel consists of four seven-segment 
LEDs that display monitored values, parameter numbers, parameter 
values and error codes. 


Six status LEDs on the operation panel are used to display the 
operation status and the units of the monitored values. 


The operation panel operates in the two modes: 
1) Monitor mode 


2) Program mode 


In monitor mode, you can monitor various operating conditions 
including input current of the 8720MC-RPS Regenerative Power 
Supply, DC bus voltage, etc. 


In program mode, you can view and change parameter values, and 
examine the error log. 


Operation Panel 


Monitor Mode 


Monitor mode is the operation mode to display operating 
conditions. The following data can be displayed in this mode: 


* Input current * 

* AC input power voltage 
* DC bus voltage 

* Power 


* Load ratio. 


The displayed value of input current is only an approximate 
value and no accuracy can be guaranteed. If you need an 
accurate input current, measure it by using a dedicated 
measuring device. 


To select a value to monitor, press the A key or the W key until the 
desired value is displayed. Pressing the A key or the W key will 
move you through the each of the displays. 


The unit of the displayed value is shown by turning ON the status 
LEDs as follows: 


e "A" : Shows the unit when the input current is displayed. 


e "V" : Shows the unit when monitoring the AC input power 
voltage or the DC bus voltage. 


e "KW": Shows the unit when monitoring the power. 


* Turning OFF all LEDs: Shows the unit when the load ratio is 
displayed. 


In both cases of monitoring the AC input power voltage and the DC 
bus voltage, the "V" status LED is ON. You can judge which item 

1s being monitored, by the display order. The unit of the load ratio 

is percent (%). But in this case, no status LED is ON. 


In case of monitoring the power, the "KW" status LED is ON 
continuously when the operation is in power running, and the "KW" 
status LED flashes when the operation is regenerative. 


In monitor mode, the "PROGRAM" status LED is turned OFF, 
indicating that the operation panel is not in program mode. 


When any fault occurs, the operation panel cannot be changed to 
monitor mode. 


Display 


The "PROGRAM" 


status LED will 
not turn ON. 





Operation Panel 6-3 


The following figure shows an example of display in monitor mode. 





A status LED ( "A", 
"V" or "KW") will turn 
ON, corresponding 
to the selected 
monitor display. 











Program Mode 


Program mode allows you to display and modify parameter values, 
and to display the error log. The following can be displayed in 
program mode: 


* Types of parameters 
* Parameter numbers 

* Parameter values 

* Selection of error log 
* Error log number 


* Error codes. 


In program mode, the "PROGRAM" status LED is ON, indicating 
that the operation panel is in program mode. 


The figure below shows an example of display in program mode. 





The "PROGRAM" 
status LED will 
turn ON. 














The display portion of the operation panel is a four-character, 
seven-segment LED. When the unit is powered up, SELF is 
displayed as the 8720MC-RPS Regenerative Power Supply 
performs the power-up self-diagnostics. When the diagnostics are 
completed, the display indicates various monitor values, parameter 
numbers, parameter values and error codes. 


6-4 Operation Panel 


Keypad 


The keypad portion of the operation panel has five push-button 


switches that are used to select monitoring items, to set parameters 
and to reset faults. 








v 











The UP ( A ) and DOWN ( © ) arrow keys are 
used to: 


* Select monitoring items in monitor mode. 


* Select parameters, and move through the error 
log in case of program mode. 


* Increase or decrease a numeric value when a 
parameter value is displayed. 


Holding down these keys will increase the scroll 
speed. 








ENT 











The ENT key is used to: 


* Display a selected parameter value and the 
contents of the error log in program mode. 


e Save a parameter value when the parameter 
value is displayed. 








PRG 











The PRG key is used to: 


e Move between program and monitor modes. 
The "PROGRAM" status LED will turn OFF 
when the operation panel is in monitor mode 
and turn ON when the operation panel is in 
program mode. 


e Return to the display of parameter number 
without saving a parameter value when a 
parameter value is displayed. 








RST 











The RST key is used to: 


* Reset fault when fault occurred and the display 
shows the error code. 


Before resetting fault, remove the reasons of the 
fault. Note that when the RUN sequence signal has 
entered, fault cannot be reset. 


Operation Panel 6-5 


Status LEDs The operation panel contains six LEDs that show the present status 
of the 8720MC-RPS Regenerative Power Supply. Each status LED 
has the following meaning. 



































LED Status Meaning 

READY On PWM switching is being performed. 
Off PWM switching is not performed. 

FAULT On Fault occurred, or the error log is being displayed. 
Off Operation is normal. 

PROGRAM On The operation panel is in program mode. 
Off The operation panel is in monitor mode. 

A On The root mean square value of the monitored input 
current is displayed in the unit of ampere. (? 

V On The root mean square value of the monitored AC input 
power voltage or DC bus voltage is displayed in the unit 
of volt. 

KW On The monitored power (power running) is displayed in the 
unit of kilowatt. 

Flashing | The monitored power (regenerated) is displayed in the 
unit of kilowatt. 

A, V, and KW |Off The load ratio ? is displayed in the unit of % when A, V 








and KW are turned OFF in monitor mode. 





“) The displayed value of input current is only an approximate value and no accuracy can be 
guaranteed. If you need an accurate value, measure it by using a dedicated measuring device. 


® The load ratio is a ratio of the input current to the rated current. 


6-6 Operation Panel 


End of Chapter 


Parameter Types 


Chapter / 


Parameters 


The parameters are used to define characteristics of the 8720MC- 
RPS Regenerative Power Supply. To program the unit for a 
specific application, you display the appropriate parameter and 
adjust it as required. This chapter provides information on 
parameter types as well as detailed descriptions of each parameter. 
This chapter also describes how to access, display, and modify 
parameters. 





familiar with the construction and operation of this 
equipment and the hazards involved should adjust and 
operate this equipment. Read and understand this 
manual in its entirety before proceeding. Failure to 
Observe this precaution could result in destruction of 
the equipment, severe bodily injury or loss of life. 


^ ATTENTION: Only qualified electrical personnel 





There are two types of parameters: 


1) User Parameters 


These parameters can be adjusted or modified at any time. 


2) Factory Parameters 


These parameters are initially set before shipping out from the 
factory. Usually, these parameters are not required to be 
adjusted or modified. 


The Factory parameters are protected by password, and the 
adequate password must be set to access these parameters. 
Note, however, that some of these parameters cannot be 
modified during operation even though the password has been 
set. 


Each parameter is described in detail in this chapter. The following 
information is provided for each parameter. 


e Parameter Number 


A unique number is assigned to each parameter. The number is 
preceded by either U or F to identify it as a User or Factory 
parameter, respectively. The parameter number is shown on the 
display of the operation panel. 


e Parameter Name 


A name is assigned to a parameter. The parameter name is not 
displayed when programming the 8720MC-RPS Regenerative 
Power Supply using the operation panel. 


7-2 








































































































































































































































































































Parameters 
Parameter Description 
This is a description of the parameter's function. 
Parameter Range 
This shows the predefined upper and lower limits of the 
parameter value. 
Default Setting 
The parameters are initially set before shipping from the factory, 
and the default setting is such factory setting. 
Parameter Type 
The parameter type identifies whether the parameter can be 
modified at any time, is protected by password, or cannot be 
modified during operation. 
Refer also to Parameters 
This shows a list of associated parameters that may provide 
additional or related information. 
The parameter structure is shown in the following figure. 
SELF ^ aE PRG |. v ENT |, Y ENT 
u > 
Cument jf sac U——— hrrg U00 4. - 700 
YA À va ENT 
AC Input m 
Power Voltage U.001 I b5RG | 150 
VA VA ENT 
DC Bus ENT 
Voltage U.002 l4 = > 150 
VA A ENT 
Power 
MES Y ENT |, Y ENT 
Load Ratio F. «* PRG F.000 [a 0 
PRG 
A A VA ENT 
ENT 
F.001 i 065.b 
PRG 
ENT 
VA 
ENT 
F.019 go On 
PRG 
| A ENT 
v ENT 
IZ)———M  .an |] 
Err KI PRG 9HU 
A YA 
8LU 
VA 
OIPL 











Protecting Parameters with 
Password 


Displaying and Changing 
Parameter Values 


User Parameters 


Parameters 7-3 


Factory parameter values are password protected using Parameter 
F.000 (Setting Password). But even after the password has been 
set, some Factory parameters cannot be modified. Such parameters 
must be set after operation stopped. 


Note that Parameter F.018 (Version Information) is a read-only 
parameter, and therefore, cannot be modified. 





familiar with the construction and operation of this 
equipment and the hazards involved should change 
the Factory Parameters. Read and understand this 
instruction manual in its entirety before proceeding. 
Failure to change parameter values could result in 
destruction of the equipment, severe bodily injury or 
loss of life. 


^ ATTENTION: Only qualified electrical personnel 





To display or change parameter values, the operation panel must be 
in program mode. Use the procedure described in the following 
sections to change parameters in program mode. For calling out the 
error log and resetting faults, refer to Chapter 9. 


The User parameters contain basic parameters that are modified 
depending on applications of the 8720MC-RPS Regenerative Power 
Supply. Use the following procedure to modify the User 
parameters. 


Step 1. Press the PRG key until the "PROGRAM" status LED 
turns ON and the display shows "U.---". You can access 
the User parameters. If "U.---" is not shown on the 
display, press the A key or the W key until "U.---" 
appears on the display. 


Step 2. Press the ENT key. The first User parameter number 
(U.000) will be displayed. 


Step 3. Use the A key or the W key to move through the User 
parameters. 


Step 4. When the desired parameter appears, press the ENT key. 
The parameter will be called out, and the parameter value 
will be displayed. 


Step 5. Use the A key to increment the value and the W key to 
decrement the value. 


Step 6. Press the ENT key to save changed value. Pressing the 
ENT key will display the same parameter number again, 
indicating that the value was saved. 


Note 1: The value is not written to the memory until the ENT key 
has been pressed. 
Note 2: Pressing the PRG key will also return to the same 


parameter number, without saving the value. 


Parameter values are retained through a line dip or power 
shutdown. 


7-4 Parameters 





U.000 DC Bus Voltage Reference 


This parameter sets the Parameter Range: 275 to 750 V 

DC bus voltage reference SPON 

value. The 8720MC-RPS Default Setting: 700 V 

Regenerative Power Parameter Type: Configurable only when the unit is normal 
Supply controls to maintain Refer also to Parameters: U.001 FWD Current Limit 

the DC bus voltage at the U.002 REV Current Limit 

set value. F.005 Voltage Control Proportional Gain 


F.007 Bus Overvoltage Detection Level 
F.008 Bus Low Voltage Detection Level 


Set the desired DC bus voltage (V) to this parameter. When the actual DC bus voltage is lower than the set 
value, current flows to the direction of power running, resulting in increase of voltage. On the contrary, if the 
actual DC bus voltage is higher than the set value, current flows to the regenerative direction, and the 
voltage will drop. But when the current limits (U.001 and U.002) are set to low values, the DC bus voltage 
might fluctuate because the current to be used for controlling the DC bus voltage is limited. 


When the DC bus voltage is set too low, control will become impossible, and the DC bus voltage will swing 
widely. Set the DC bus voltage to a value equal to or higher than the peak value of AC input power voltage 
plus 30 V. 


When regenerated power enters rapidly due to rapid deceleration of load equipment or other reasons, the 
DC bus voltage might go up instantaneously. To prevent such rapid change of the DC bus voltage, adjust 
the Voltage Control Proportional Gain (F.005). 


If the difference between the set values of the DC Bus Voltage Reference and the Bus Overvoltage Detection 
Level (F.007) is small, bus overvoltage fault may be caused. 


When a fault occurred, the DC Bus Voltage Reference cannot be set until the fault has been reset. 





U.001 FWD Current Limit 


This parameter limits Parameter Range: 0 to 15096 

current flowing from the AC Default Setting: 150% 

input power to the 

8720MC-RPS Parameter Type: Configurable only when the unit is normal 
Regenerative Power Refer also to Parameters: U.000 DC Bus Voltage Reference 
Supply during operation. U.002 REV Side Current Limit 


F.002 Rated Current 


Set the FWD current value (flowing in the direction to power running) to be limited as a ratio (%) of the Rated 
Current (F.002). What is to be limited is the current value flowing by the PWM switching. It is impossible to 
limit the current flowing through diodes. 


When the set value of the FWD Current Limit is too small, the DC bus voltage might not go up to the set 
value of the DC Bus Voltage Reference (U.000). 


If the 8720MC-RPS Regenerative Power Supply operates in the power regeneration mode only, set this 
parameter to 0%. The DC bus voltage to start power regeneration is the set value of the DC Bus Voltage 
Reference (U.000). 


When an error occurred, the FWD Current Limit cannot be set until the error has been reset. 





U.002 REV Current Limit 


This parameter limits Parameter Range: 0 to 15096 

current flowing from the Default Setting: 150% 

8720MC-RPS 

Regenerative Power Parameter Type: Configurable only when the unit is normal 
Supply unit to the AC input Refer also to Parameters: U.000 DC Bus Voltage Reference 
power during operation. U.001 FWD Current Limit 


F.002 Rated Current 
Set the REV current value (flowing in the direction to power regeneration) to be limited as a ratio (%) of the 
Rated Current (F.002). What is to be limited is the current value flowing by the PWM switching. 


When the set value of the REV Current Limit is too small, the DC bus voltage might not go down to the set 
value of the DC Bus Voltage Reference (U.000), and DC bus overvoltage error might be detected. 


When an error occurred, the REV Current Limit cannot be set until the error has been reset. 





Parameters 7-5 


Factory Parameters 





F.000 Password 


A password must be set to 
this parameter to change 
the Factory parameters. 


Parameter Range: 0 to 999 
Default Setting: 0 
Parameter Type: Configurable 


Refer also to Parameters: F.001 Unit Selection 





operation of this equipment and the hazards involved should change the Factory 
Parameters. Read and understand this instruction manual in its entirety before 
proceeding. Failure to change parameter values could result in destruction of the 
equipment, severe bodily injury or loss of life. 


^ ATTENTION: Only qualified electrical personnel familiar with the construction and 





Once a password is set, it will be retained until power to the 8720MC-RPS Regenerative Power Supply is 
disconnected. Note, therefore, that once a password is set to this parameter, the Factory parameters can be 
changed at any time until the power to the unit is disconnected. 


Even though a password has been set to this parameter, the password can be cancelled by setting other 
value than the password to this parameter. 


Password can be set at any time while the 8720MC-RPS Regenerative Power Supply is operating or 
stopping, or fault occurred. 


Use the following procedure to set a password: 

Step 1. Press the PRG key. "U.---" will be displayed, and the status LED of "PROGRAM" will light ON. 
Step 2. Press the A key or the W key until "F.---" is displayed. 

Step 3. Press the ENT key. "F.000" will be displayed. 

Step 4. Press the ENT key. "0" will be displayed. 

Step 5. Press the A key until "55" is displayed. (Holding down the A key will increase the scroll speed.) 
Step 6. Press the ENT key to enter the value. 





7-6 Parameters 





F.001 Unit Selection (Note 1) 


As the type of the 
8720MC-RPS 
Regenerative Power 
Supply, this parameter sets 
a character code 
representing the input 
power supply voltage and 
the unit capacity. 


For most applications, it is 
recommended that this 
parameter not be adjusted. 


Note 1: This parameter is 
available from software 
version No. 3.00 (to be 
shown on the parameter 
F.018) or later only. 


Parameter Range: 


Default Setting: 
Parameter Type: 


027.6 (15 kW (28 Amps) unit for 460 V, single 15 kW unit) 
054.b (30 kW (56 Amps) unit for 460 V, 2 paralleled 15 kW units) 
081.b (45 kW (84 Amps) unit for 460 V, 3 paralleled 15 kW units) 
065.b (37 kW (65 Amps) unit for 460 V, single 37 kW unit) 
130.6 (75 kW (130 Amps) unit for 460 V, 2 paralleled 37 kW units) 
195.b (110 kW (195 Amps) unit for 460 V, 3 paralleled 37 kW units) 
190.b (125 kW (190 Amps) unit for 460 V, single 125 kW unit) 

( 


380.b (250 kW 
570.b (375 kW 


Unit-dependent 


anann 


) 
380 Amps) unit for 460 V, 2 paralleled 125 kW units) 
570 Amps) unit for 460 V, 3 paralleled 125 kW units) 


Requiring the password, configurable only while the unit stops 


Refer also to Parameters: F.002 Rated Current 





operation of this equipment and the hazards involved should change this parameter. 


| ATTENTION: Only qualified electrical personnel familiar with the construction and 


Read and understand this manual in its entirety before proceeding. Failure to 
change parameter values could result in destruction of the equipment, severe bodily 
injury or loss of life. 





As shown in the figure below, the unit type is represented by the numbers showing the AC input current. 


Be careful that setting a unit type to this parameter resets all the parameters to factory default settings, and 
cancels the password. 


When the password has not been set, or during operation even though the password has been set, the unit 
capacity cannot be changed. 027. b 


AC Input Current 
027: 
054: 
065: 
081: 
130: 
190: 
195: 
380: 
570: 


AC Input Power Voltage 











28 Amps 
56 Amps 
65 Amps 
84 Amps 
130 Amps 
190 Amps 
195 Amps 
380 Amps 
570 Amps 








b: 380 to 460 VAC 


Important: The setting of this parameter must be either one of "027.b", "054.b", "065.b", "081.b", "130.b", 
"190.b", "195.b", "380.b" or "570.b". Do not set to any other value. 


Parameters 7-7 





F.002 Rated Current (Note 1) 


This parameter sets the 
rated input current of the 
8720MC-RPS 
Regenerative Power 
Supply. In case of multiple 
units connected in parallel, 
the total current of the 
connected units must be 
set. 


For most applications, it is 
recommended that this 
parameter not be adjusted. 


Note 1: This parameter is 
available from software 
version No. 3.00 (to be 
shown on the parameter 
F.018) or later only. 


Parameter Range: 10 to 35 Amps 15 kW unit (single 15 kW unit) 
20 to 70 Amps 30 kW unit (2 paralleled 15 kW units) 
30 to 105 Amps 45 kW unit (3 paralleled 15 kW units) 
10 to 70 Amps 37 kW unit (single 37 kW unit) 
20 to 140 Amps 75 kW unit (2 paralleled 37 kW units) 
30 to 210 Amps 110 kW unit (3 paralleled 37 kW units) 
30 to 215 Amps 125 kW unit (single 125 kW unit) 
60 to 430 Amps 250 kW unit (2 paralleled 125 kW units) 
90 to 645 Amps 375 kW unit (3 paralleled 125 kW units) 


Default Setting: 28 Amps 15 kW unit (single 15 kW unit) 
56 Amps 30 kW unit (2 paralleled 15 kW units) 
84 Amps 45 kW unit (3 paralleled 15 kW units) 
65 Amps 37 kW unit (single 37 kW unit) 
130 Amps 75 kW unit (2 paralleled 37 kW units) 
195 Amps 110 kW unit (3 paralleled 37 kW units) 
190 Amps 125 kW unit (single 125 kW unit) 
380 Amps 250 kW unit (2 paralleled 125 kW units) 
570 Amps 375 kW unit (3 paralleled 125 kW units) 


Parameter Type: Requiring the password, configurable only while the unit stops 


Refer also to Parameters: U.001 FWD Current Limit 
U.002 REV Current Limit 
F.001 Unit Selection 


This parameter sets the rated input current in units of amperes. The set value affects the FWD and REV 
Current Limits (U.001 and U.002), overload detection, etc. 


In case of paralleled units, the total current value of the connected units must be set to this parameter. 
When pressing the A key or the W key, the displayed value changes 1 Amp per stroke in case of single 
unit, 2 Amps per stroke in case of two paralleled units, and 3 Amps per stroke in case of three paralleled 
units. 


The Rated Current cannot been changed, when the password has not been set, while operating even if the 
password has already been set, or when an error occurred. 





operation of this equipment and the hazards involved should change this parameter. 
Read and understand this instruction manual in its entirety before proceeding. Failure 
to change parameter values could result in destruction of the equipment, severe bodily 


injury or loss of life. 


ATTENTION: Only qualified electrical personnel familiar with the construction and 








F.003 Current Control Proportional Gain 


This parameter determines 
the response of the current 
control. 


For most applications, it is 
recommended that this 
parameter not be adjusted. 


Parameter Range: 0.01 to 10.00 times 
Default Setting: 1.00 times 
Parameter Type: Requiring the password, configurable only when the unit is normal 


Refer also to Parameters: F.004 Current Control Integral Gain 


Larger values of the Current Control Proportional Gain set in this parameter result in faster response of the 
current control loop. But if the gain is set to a too large value, the unit becomes more susceptible to 
overcurrent detection and unstable by starting vibration of input current. Decreasing the gain value will help 
increase stability, but result in less respondence. 





7-8 Parameters 





F.004 Current Control Integral Gain 


This parameter determines 
the dynamic characteristics 
of the current control. 


For most applications, it is 
recommended that this 
parameter not be adjusted. 


Parameter Range: 1 to 3,000 rad/sec 
Default Setting: 64 rad/sec 
Parameter Type: Requiring the password, configurable only when the unit is normal 


Refer also to Parameters: F.003 Current Control Proportional Gain 


Larger values of the Current Control Integral Gain set in this parameter result in shorter arrival time to the 
reference current value. If the gain is set too large, the current vibrates and becomes unstable. 
Decreasing the gain will help increase stability, but the arrival time to the reference current value becomes 
longer to a change of input current. 





F.005 Voltage Control Proportional Gain 


This parameter determines 
the response of the voltage 
control. 


Parameter Range: 0.01 to 30.00 times 
Default Setting: 5.00 times 
Parameter Type: Requiring the password, configurable only when the unit is normal 


Refer also to Parameters: F.006 Voltage Control Integral Gain 


Larger values of the Voltage Control Proportional Gain set in this parameter result in faster response to 
change of DC bus voltage. But If the gain is set too large, the unit becomes unstable. Decreasing the gain 
value will help increase stability, but may result in less respondence to a change of DC bus voltage. 


If capacity of load equipment capacitors is large, increase the set value of the Voltage Control Proportional 
Gain. 





F.006 Voltage Control Integral Gain 


This parameter determines 
the dynamic characteristics 
of the voltage control. 


For most applications, it is 
recommended that this 
parameter not be adjusted. 


Parameter Range: 1 to 3,000 rad/sec 
Default Setting: 128 rad/sec 
Parameter Type: Requiring the password, configurable only when the unit is normal 


Refer also to Parameters: F.005 Voltage Control Proportional Gain 


Larger values of the Voltage Control Integral Gain set in this parameter result in shorter arrival time to the set 
value. But if the gain is set too large, the voltage vibrates and becomes unstable. Decreasing the gain will 
help increase stability, but the arrival time to the set value becomes longer to a change of DC bus voltage. 


When capacity of load equipment capacitors is large, increase the set value of the Voltage Control Integral 
Gain. 





F.007 Bus Overvoltage Detection Level 


This parameter sets the 
voltage level to detect the 
DC bus overvoltage error. 


Parameter Range: 325 to 900 V 
Default Setting: 800 V 
Parameter Type: Requiring the password, configurable only while the unit stops 


Refer also to Parameters: U.000 DC Bus Voltage Reference 
F.001 Unit Selection 
F.008 Bus Low Voltage Detection Level 


When the DC bus voltage reaches the set value of the Bus Overvoltage Detection Level, the DC bus 
overvoltage error will be detected. When the error is detected, the PWM switching will stop, the discharge 
operation will start, and operation will stop. 


When load changes largely due to rapid deceleration of load equipment or other reasons, the DC bus voltage 
might be increased instantaneously. If the voltage difference between the set values of the DC Bus Voltage 
Reference (U.000) and the Bus Overvoltage Detection Level is not large enough, the bus overvoltage error 
might be detected. 


Set the Bus Overvoltage Detection Level to the same value as the detection level of the load equipment. 


Parameters 7-9 








ATTENTION: Only qualified electrical personnel familiar with the construction and 
operation of this equipment and the hazards involved should change this parameter. 
Read and understand this instruction manual in its entirety before proceeding. 
Failure to change parameter values could result in destruction of the equipment, 


severe bodily injury or loss of life. 








F.008 Bus Low Voltage Detection Level 


This parameter sets the 
voltage level to detect the 
DC bus low voltage error. 


Parameter Range: 200 to 600 V 
Default Setting: 400 V 
Parameter Type: Requiring the password, configurable only while the unit stops 


Refer also to Parameters: U.000 DC Bus Voltage Reference 


F.001 Unit Selection 
F.007 Bus Overvoltage Detection Level 


When the DC bus voltage reaches the set value of the Bus Low Voltage Detection Level, the DC bus low 
voltage error will be detected. Detection of the error will stop the PWM switching, start the discharge 
operation, and stop operation. 





ATTENTION: Only qualified electrical personnel familiar with the construction and 
operation of this equipment and the hazards involved should change this parameter. 
Read and understand this instruction manual in its entirety before proceeding. Failure 
to change parameter values could result in destruction of the equipment, severe bodily 


injury or loss of life. 








F.009 AC Overvoltage Detection Level 


This parameter sets the 
voltage level to detect the 
AC input power 
overvoltage error. 


Parameter Range: 200 to 550 V 
Default Setting: 550 V 
Parameter Type: Requiring the password, configurable only while the unit stops 


Refer also to Parameters: F.001 Unit Selection 


When the AC input power voltage reaches the set value of the AC Overvoltage Detection Level, the AC 
overvoltage error will be detected. Detection of the error will stop the PWM switching, start the discharge 
operation, and stop operation. 


When the AC Overvoltage Detection Level is carelessly set lower than the AC input power voltage, the AC 
overvoltage error cannot be reset. In such a case, use the following steps to reset the AC overvoltage error. 


Step 1. 


Step 2. 
Step 3. 
Step 4. 
Step 5. 
Step 6. 
Step 7. 
Step 8. 
Step 9. 


Press the PRG key while the "AC" error is shown on the display. The operation panel will be in 
program mode, and the display will show "U.---". 


Press the A key or the W key until "F.---" will be shown in the display. 

Press the ENT key. The display will show "F.000". 

Press the ENT key. The display will show "O". 

Set the password (55), and press the ENT key. The display will show "F.000". 
Press the A key or the W key until "F.009" will be shown in the display. 

Press the ENT key. The display will show the AC Overvoltage Detection Level. 
Press the & key to increment the set value to an adequate value. 

Press the ENT key to decide the set value. The display will show "F.009". 


Step 10. Press the PRG key. The display will show "AC". 
Step 11. Press the RST key or enter the RST sequence signal. Resetting "AC" will return to monitor mode. 





ATTENTION: Only qualified electrical personnel familiar with the construction and 
operation of this equipment and the hazards involved should change this parameter. 
Read and understand this instruction manual in its entirety before proceeding. Failure 
to change parameter values could result in destruction of the equipment, severe bodily 


injury or loss of life. 








Parameters 





F.010 Carrier Frequency (Note 1) 


This parameter sets the 
carrier frequency of the 
PWM switching. 


Note 1: This parameter is 
available from software 
version 3.00 (to be shown 
on the parameter F.018) or 
later only. 


5 kHz, 10 kHz, or 15 kHz 


10 kHz: For Model 8720MC-RPS027 and 8720MC-RPS065 
5 kHz: For Model 8720MC-RPS190 


Requiring the password, configurable only when the unit is normal 


Parameter Range: 
Default Setting: 


Parameter Type: 
Refer also to Parameters: F.002 Rated Current 








ATTENTION: Only qualified electrical personnel familiar with the construction and 
operation of this equipment and the hazards involved should change this parameter. 
Read and understand this manual in its entirety before proceeding. Failure to change 
parameter values could result in destruction of the equipment, severe bodily injury or 


loss of life. 





The carrier frequency is largely concerned with heat generation of the 8720MC-RPS Regenerative Power 
Supply and the reactor. When the carrier frequency is increased from 10 kHz to 15 kHz, use the unit by 
derating the Rated Current (F.002) by 20%. 





F.011 Deadtime 


This parameter sets the 
deadtime of PWM. 


For most applications, it is 
recommended that this 
parameter not be adjusted. 


Parameter Range: 1.5 to 15.0 microseconds 


Default Setting: 6.0 microseconds 
Parameter Type: Requiring the password, configurable only while the unit is normal and stops 


Refer also to Parameters: N/A 





ATTENTION: Only qualified electrical personnel familiar with the construction and operation 
of this equipment and the hazards involved should change this parameter. Read and 
understand this instruction manual in its entirety before proceeding. Failure to change 
parameter values could result in destruction of the equipment, severe bodily injury or loss of 
life. 





The deadtime is the time provided for protecting the power modules from shorting. Therefore, the set value 
depends on the transistor modules to be used for the power modules. Careless change of the deadtime 
might damage the unit. If you need to change the setting of this parameter, contact the Allen-Bradley 
Company. 





F.012 Allowable Time for Instantaneous Power Loss 


This parameter sets the 
time period within which 
the 8720MC-RPS 
Regenerative Power 
Supply can return to 
operation automatically, 
when the input power 
voltage dropped (lower 
than 200 VAC for 460 V 
units) instantaneously, or 
when instantaneous phase 
loss occurred. 


When the power dip or 
phase loss continued 
longer than the set value, a 
phase loss error will be 
detected. 


0.05 to 3.00 seconds 
0.50 seconds 


Parameter Range: 
Default Setting: 


Parameter Type: Requiring the password, configurable only while the unit is normal and stops 


Refer also to Parameters: N/A 


If an instantaneous power loss or phase loss is detected, the PWM switching will stop. When the unit returns 
from the instantaneous power loss or phase loss, the PWM switching will restart. 


When the power to the main magnetic contactor was turned OFF due to an instantaneous power loss or 
phase loss and the main power supply was turned OFF, returning from the instantaneous power loss or 
phase loss will start precharge operation. After the precharge operation is completed, the PWM switching 
will restart. 


When an instantaneous power loss or phase loss continued longer than the value set to this parameter, it is 
considered as a power loss, and a phase loss error will be detected. Detecting a phase loss error will start 
discharge operation. 





Parameters 7-11 





F.013 AC Reactor Capacity (Note 1) 


This parameter sets the 
capacity of the AC reactor 
installed in the main power 
wiring. 

Note 1: This parameter is 
available from software 
version No. 3.00 (to be 
shown on the parameter 
F.018) or later only 


Parameter Range: 100 to 8,000 micro-henry 


1,200 micro-henry: For Model 8720MC-RPSO65BM and 8720MC-RPSO65BS 
units 
850 micro-henry: For Model 8720MC-RPS027BM 
400 micro-henry: For Model 8720MC-RPS190BM and 8720MC-RPS190BS 
units 


Default Setting: 


Parameter Type: Requiring the password, configurable only while the unit is normal and stops 


Refer also to Parameters: F.003 Current Control Proportional Gain 
F.004 Current Control Integral Gain 


F.010 Carrier Frequency 


This parameter sets the capacity of the AC reactor in the unit of micro-henry. Note that the AC reactor 
capacity set to the parameter is not the total capacity for three phases but the capacity for one phase only. 
This is also applicable to multiple units connected in parallel. 





F.014 Precharge/Discharge Time (Note 1) 


This parameter sets the 
precharge/discharge time. 
If the DC bus voltage did 
not go up in precharge 
even if the set time period 
has elapsed, a precharge 
error will be detected. In 
case of discharge, the 
discharge operation will 
continue for the time period 
set to this 

parameter. 


Note 1: This parameter 
must be set to 6.0 seconds 
when 8720MC-RPS190 
unit is used. 


0.5 to 15.0 seconds 
3.0 seconds 


Parameter Range: 
Default Setting: 


Parameter Type: Requiring the password, configurable only while the unit is normal and stops 


Refer also to Parameters: F.015 Wattage of Precharge/Discharge Resistor 


Larger capacity of capacitors connected to the DC bus requires a longer precharge time. In such a case, set 
a large value to this parameter. 


When the DC bus voltage does not reach the precharge voltage even if the time period set to this parameter 
has already elapsed, a precharge error will be detected. Set a larger value. (Remarks: The precharge 
voltage is 90% of the peak value of the AC input power voltage.) 


In case of precharge, the precharge operation will be finished when the DC bus voltage arrives at a certain 
value, even though the set Precharge/Discharge Time has not elapsed yet. But in case of discharge, the 
discharge operation continues for the set value of this parameter, regardless of the DC bus voltage. 


When an external resistor for precharge/discharge or an external circuit is used, set again the Precharge/ 
Discharge Time, if necessary. For connection of the external resistor for precharge/discharge or the external 
circuit, refer to Section 4.3 and 4.4. 





F.015 Wattage of Precharge/Discharge Resistor (Note 1) 


This parameter sets the 
rated wattage of the 
precharge/discharge 
resistor. 


Note 1: This parameter is 
available from software 
version No. 3.00 (to be 
shown on the parameter 
F.018) or later only. 


Parameter Range: 50 to 2,000 W 


120 W: For Model 8720MC-RPSO65BM and 8720MC-RPSO65BS units 
80 W: For Model 8720MC-RPS027BM 
400 W: For Model 8720MC-RPS190BM and 8720MC-RPS190BS units 


Requiring the password, configurable only while the unit is normal and stops 


Default Setting: 


Parameter Type: 
Refer also to Parameters: F.014 Precharge/Discharge Time 


When an external resistor for precharge/discharge or an external circuit is used, set again the Precharge/ 
Discharge Time, if necessary. For connection of the external resistor for precharge/discharge or the external 
circuit, refer to Section 4.3 and 4.4. 


The 8720MC-RPS Regenerative Power Supply has an overload protection function for precharge/discharge 
resistor. When the resistor becomes overload condition as a result of repeated precharge and discharge, an 
overload error of the precharge/discharge resistor will be detected. 


The standard indication of overload of the precharge/discharge resistor is as follows: 
Temperature increase of resistor: 


500 x Precharge/Discharge Time (F.014) 


Temp. Increase of Resistor (degree C) = - à 
Wattage of Precharge/Discharge Resistor 





Temp. of Resistor to Detect Overload = 120 degree C (248 degree F) 


When the temperature of the precharge/discharge resistor reaches 120 degree C (248 degree F), an 
overload error of the resistor will be detected. But if precharge/discharge operation is not performed for 10 
minutes, the integrated values will be cleared. 





7-12 


Parameters 





F.016 DC Bus Voltage Offset (Note 1) 


This parameter is used to 
compensate error of 
monitored DC bus voltage 
from actual value, by 
multiplying feedback value 
of DC bus voltage by offset 
(gain). 

Note 1: This parameter is 
available from software 
version No. 2.00 (to be 
shown on the parameter 
F.018) or later only. 


0.900 to 1.100 
1.000 
Requiring the password, configurable only while the unit is normal 


Parameter Range: 
Default Setting: 
Parameter Type: 
Refer also to Parameters: U.000 DC Bus Voltage Reference 





ATTENTION: Only qualified electrical personnel familiar with the construction and operation 
of this equipment and the hazards involved should change this parameter. Read and 
understand this manual in its entirety before proceeding. Failure to change parameter 
values could result in destruction of the equipment, severe bodily injury or loss of life. 





An error of monitored value of DC bus voltage shown on the display (usually almost same as the set value of 
the DC Bus Voltage Reference (U.000) from actually measured DC bus voltage can be compensated by 
setting an adequate value to this parameter. 


The value to be set to the DC Bus Voltage Offset (F.016) is determined by using the following formula: 
DC Bus Voltage Offset (F.016) = Measured DC Bus Voltage (*) / DC Bus Voltage Reference (U.000) 

* Measured DC Bus Voltage is value actually measured by a voltmeter. 

After setting this parameter, confirm that the error was reduced. 





F.017 Discharging Function Enable (Note 1) 


This parameter selects 
whether the discharging 
function of DC bus voltage 
is performed or not, when 
the 8720MC-RPS 
Regenerative Power 
Supply is stopped or 
aborted. When "On" is 
selected, DC bus voltage 
will be discharged at 
stopping the unit. If "OFF" 
is set, DC bus voltage will 
not be discharged. 


Note 1: This parameter is 
available from software 
version No. 2.00 (to be 
shown on the parameter 
F.018) or later only. 


Parameter Range: OFF, On 
Default Setting: On 
Parameter Type: Requiring the password, configurable only while the unit is normal 


Refer also to Parameters: N/A 





ATTENTION: Only qualified electrical personnel familiar with the construction and operation 
of this equipment and the hazards involved should change this parameter. Read and 
understand this manual in its entirety before proceeding. Failure to change parameter 
values could result in destruction of the equipment, severe bodily injury or loss of life. 


ATTENTION: DC bus capacitors retain hazardous voltages after input power has been 
disconnected. After disconnecting power, wait for a while for the DC bus capacitors to 
discharge and then check the voltage with a voltmeter to ensure the DC bus capacitors are 
discharged before touching any internal components. Failure to observe this precaution 
could result in severe bodily injury or loss of life. 





Setting this parameter to "OFF" will not discharge the DC bus voltage when the 8720MC-RPS Regenerative 

Power Supply is stopped or aborted, resulting in retaining an almost same voltage as the set value of the DC 
Bus Voltage Reference (U.000) in the DC bus capacitors. Exercise extreme care when this parameter is set 
to "OFF". 


When using by setting this parameter to "OFF", 


1) When a GV3000/SE unit is connected to the 8720MC-RPS Regenerative Power Supply as load 
equipment, set this parameter to "OFF", and perform discharging on the GV3000/SE unit side. In this 
case, the discharging time is determined by the GV3000/SE unit. 


2) When the 8720MC-RPS Regenerative Power Supply is used in the power regeneration mode (Figures 
4.4 and 4.9), set this parameter to "OFF", and perform discharging on the inverter unit side. In this case, 
the discharging time is determined by the Inverter unit to be connected. 





Parameters 





F.018 Version Information 


This parameter displays 
the software version 
number. 


Parameter Range: N/A 
Default Setting: N/A 
Parameter Type: Read only 


Refer also to Parameters: N/A 





F.019 Selection of Wiring Error (LE) Detecting Function (Note 1) 


This parameter selects 
whether detecting function 
of wiring error (LE) during 
operation is used or not. 
When "On" is selected, 
existence of wiring error 
will be verified when 
operation is started. If 
"OFF" is selected, 
verification of existence of 
wiring error will not be 
performed. 


Note 1: This parameter is 
available from software 
version No.3.00 (to be 
shown on the parameter 
F.018) or later only. 


Parameter Range: OFF, On 
Default Setting: On 
Parameter Type: Requiring the password, configurable only while the unit is normal 


Refer also to Parameters: N/A 





7-14 Parameters 


End of Chapter 


Chapter 8 


Error Codes and 
Warning Buzzer 


This chapter describes contents of error codes and how to correct 
problems. 


When an error occurs in the 8720MC-RPS Regenerative Power 
Supply, an error code corresponding to the error is shown on the 
display. The error codes are two- or three-letter codes flashing on 
the display. 


When an error occurs while the unit stops, the precharge operation 
and the PWM switching cannot be started by entering the RUN 
sequence signal, and thus, operation cannot be started, until the 
error has been reset. 


When an error occurs during operation, the PWM switching will 
stop, the discharge operation will start and the unit will stop. In 
this case, the unit cannot be started until the error has been reset. 


For resetting an error, press the RST key or enter the RESET 
sequence signal after removing the cause of the error. In either 
case, the error cannot be reset when the RUN sequence signal has 
been entered. 


If multiple errors occurred at a time, the corresponding error codes 
will be scrolled flashing one by one. 


It is possible to view all the parameters, while an error occurred and 
the error code is being displayed. But in such a case, any 
parameters except some special ones cannot be changed. To view a 
parameter, press the PRG key while an error code is displayed. 
Pressing the PRG key will display "U.---", indicating the operation 
panel is changed to program mode. 


A maximum of ten error codes can be stored in the error log. The 
last error that occurred is the first one to appear on the display 
when accessing the error log. The last error will be identified with 
the highest number (up to 9). 


The first error that occurred will appear as the last one in the error 
log. The first error will be identified by the number 0. 


When viewing the error log, pressing the A key or the W key will 
scroll the error codes. 


The error log will be retained even if power to the unit is lost. If 
the error log is full, more entries can be added by clearing older 
entries. If you desire to clear the error log, press the RST key while 
the error log is displayed. 


In the course of error processing, an error code (LE*) other than 
original errors may be incidentally displayed. 


8-2 


Contents of Error Codes 


Error Codes and Warning Buzzer 


and Recovering 


The error codes are shown in tables 8.A to 8.D. Table 8.A shows 


the error codes common to all units regardless of single unit 
connection or parallel connection of multiple units. Table 8.B 
shows the error codes caused by master unit (unit having Regulator 
Board) regardless of single unit connection or parallel connection 
of multiple units. Table 8.C shows the error codes caused by slave 
unit | (slave unit adjacently connected to master unit) in case of 
parallel connection of multiple units. Table 8.D shows the error 
codes caused by slave unit 2 (slave unit adjacently connected to 
slave unit 1) in case of parallel connection of multiple units. 


To reset error codes, first remove the causes of the errors, and then 
press the RST key or enter the RESET sequence signal. In either 
case, resetting cannot be performed when the RUN sequence signal 
has been entered. 


Table 8.A 


List of Error Codes Common to All 8720MC-RPS Regenerative Power Supply 















































Error | Error 
Code | Description Error Cause Corrective Action 
PrC Precharge Error The DC bus voltage did not reach a Check that the set value of the Precharge/ Discharge Time (F.014) 
certain level in precharge even if the is correct. If no other problem is found, increase the set value. 
prechaige/discharge: time has Precharge/discharge resistor or its wiring is faulty. Check the 
elapsed. ; n 
resistor and wiring, and remove the cause. If Fuse 1 the precharge 
fuse is blown, replace the fuse. Check that the recommended line 
reactor has been selected. 
CHr Precharge/ The precharge/discharge resistor is in | Do not perform precharge and discharge for a while. 
Discharge overload condition. : : 5 z 
Overload Error Replace the precharge/discharge resistor with one having a larger 
wattage, and set again the Wattage of Precharge/Discharge 
Resistor (F.015). 
oL Overload Error Output current is excessive. Check that the power rating of the unit is adequate for the input of 
the load. 
Decrease the input of the load. 
AC AC Input The AC input power frequency Check the AC input power supply. 
Frequency or exceeds the base frequency (50 Hz 
High Voltage or 60 Hz) by +/-3% or more. 
Error , : : ; 
There is large distortion (notches) in 
AC input power voltage. 
The AC input power is too high. Check that the set value of the AC Overvoltage Detection Level 
(F.009) is adequate. If no other problem is found, increase the set 
value. 
HU High Bus Voltage | The DC bus voltage is too high. Check the AC input power voltage. 
Check that the set value of the Voltage Control Proportional Gain 
(F.005) is adequate. 
Check that the set value of the Bus Overvoltage Detection Level 
(F.007) is adequate. If no other problem is found, increase the set 
value. 
The capacity of the AC reactor is too large. Replace it with a 
reactor having a smaller capacity. 
The load change is too fast. Reduce the load change speed. 
LU Low Bus Voltage | The DC bus voltage is too low. Check the AC input power voltage and the line fuse. 





Error 











Check that the set value of the Allowable Time for Instantaneous 
Power Loss (F.012) is adequate. If no other problem is found, 
increase the set value. 





Error Codes and Warning Buzzer 8-3 




































































Error | Error 
Code |Description Error Cause Corrective Action 
IPL Input Phase Loss | Phase loss occurred for the AC input Check the AC input power voltage and the line fuse. 
Error power. 
Power loss occurred (The allowable Check that the set value of the Allowable Time for Instantaneous 
time for instantaneous power loss was | Power Loss (F.012) is adequate. If no other problem is found, 
exceeded.) increase the set value. 
Con Magnetic No answer-back signal was received Check the operation of the main magnetic contactor. 
Gontactor:Error Ioni tue Ha me gnis I contactor: Verify that the answer-back signal of the main magnetic contactor is 
correctly wired to the sequence input signal terminal. 
Fr Faulty Relay An error was received from the Power | Verify that the connecter to connect the Regulator Board and the 
Signal Interface Board (PIFS). Power Interface Board is correctly inserted. 
Table 8.B 
List of Error Codes Relating to Master Units 
Error Error 
Code |Description Error Cause Corrective Action 
P.U1 | Power Module The Phase L, Power Module of the Check the wiring of the AC input power. 
PNAS Eror master- ünitis:taulty, Check the ambient temperature, the cooling fan, and the clearances 
around the unit. 
If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the unit. Check that the harmonic filter is located on the 
primary side of the line reactor and the secondary side of the line 
reactor is connected to the RPS. 
PU.1 | Power Module The Phase L; Power Module of the Check the wiring of the AC input power. 
Phase Lz Error Master units faulty: Check the ambient temperature, the cooling fan, and the clearances 
around the unit. 
If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the unit. Check that the harmonic filter is located on the 
primary side of the line reactor and the secondary side of the line 
reactor is connected to the RPS. 
PU1. | Power Module The Phase L3 Power Module of the Check the wiring of the AC input power. 
pugs Error mae eh Mn Saul, Check the ambient temperature, the cooling fan, and the clearances 
around the unit. 
If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the unit. Check that the harmonic filter is located on the 
primary side of the line reactor and the secondary side of the line 
reactor is connected to the RPS. 
FA1 Fan Error The cooling fan(s) of the master unit Check the wiring of the cooling fan for the master unit and the AC 
and/or the AC reactor is (are) reactor. 
Sar ea tor is overheated Verify that no foreign material is caught in the cooling fans for the 
bó a0 ORIS sean S. master unit and the AC reactor. 
If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the cooling fan or the Power Interface Board (PIFS). 
LE1 Line Connect Error | The phases (L4, L and L3) of the AC Make the phases (L4, Lo and L3) of the AC main power same as 
input power of the master unit do not those of the control power. 
match with those of the control power. 
PS1 Power Supply The Power Interface Board (PIFS) of If the error occurs intermittently, contact the Allen-Bradley Company 





Board Error 





the master unit is faulty. 





or replace the Power Interface Board (PIFS). 





(1) This is applicable only to Model 8720MC-RPS190BM and 8720MC-RPS190BS units. 


8-4 


Error Codes and Warning Buzzer 


Table 8.C 


List of Error Codes Relating to Slave Units 1 












































Error | Error 
Code | Description Error Cause Corrective Action 
P.U2 | Power Module The Phase L; Power Module of the Check the wiring of the AC input power. 
USB. Eee slave unit: faulty; Check the ambient temperature, the cooling fan, and the clearances 
around the unit. 
If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the unit. 
PU.2 | Power Module The Phase L) Power Module of the Check the wiring of the AC input power. 
Phase: la Error slave unitis faulty: Check the ambient temperature, the cooling fan, and the clearances 
around the unit. 
If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the unit. 
PU2. | Power Module The Phase Lg Power Module of the Check the wiring of the AC input power. 
Place Eg Error saveunitaistaulty: Check the ambient temperature, the cooling fan, and the clearances 
around the unit. 
If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the unit. 
FA2 Fan Error The cooling fan(s) of the slave unit 1 Check the wiring of the cooling fans for the slave unit 1 and the AC 
and/or the AC reactor is (are) reactor. 
Glen Ne: Verify that no foreign material is caught in the cooling fans for the 
The AC reactor is overheated“). ye 9 9 9 
slave unit 1 and the AC reactor. 
If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the cooling fan or the Power Interface Board (PIFS). 
LE2 Line Connect Error | The phases (L4, Lə and L3) of the AC Make the phases (L4, Lə and L3) of the AC main power same as 
input power of the slave unit 1 do not | those of the control power. 
match with those of the control power. 
PS2 Power Supply The Power Interface Board (PIFS) of If the error occurs intermittently, contact the Allen-Bradley Company 





Board Error 





the slave unit 1 is faulty. 





or replace the Power Interface Board (PIFS). 





(1) This is applicable only to Model 8720MC-RPS190BM and 8720MC-RPS190BS units. 


Table 8.D 


Error Codes and Warning Buzzer 8-5 


List of Error Codes Relating to Slave Units 2 























Error | Error 
Code |Description Error Cause Corrective Action 
P.U3 | Power Module The Phase L, Power Module of the Check the wiring of the AC input power. 
phase Lr Error Slave MUS SSI AY: Check the ambient temperature, the cooling fan, and the clearances 
around the unit. 
If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the unit. 
PU.3 | Power Module The Phase L) Power Module of the Check the wiring of the AC input power. 
khase: Error slave unes aU: Check the ambient temperature, the cooling fan, and the clearances 
around the unit. 
If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the unit. 
PU3. | Power Module The Phase L5 Power Module of the Check the wiring of the AC input power. 


Phase L, Error slave unit 2 is faulty. 





Check the ambient temperature, the cooling fan, and the clearances 
around the unit. 





If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the unit. 





FA3 | Fan Error The cooling fan(s) of the slave unit 2 
and/or the AC reactor is (are) 
defective. 


The AC reactor is overheated (?. 


Check the wiring of the cooling fan for the slave unit 2 and the AC 
reactor. 





Verify that no foreign material is caught in the cooling fans for the 
slave unit 2 and the AC reactor. 





If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the cooling fan or the Power Interface Board (PIFS). 





LES Line Connect Error | The phases (L4, Lo and Ls) of the AC 
input power of the slave unit 2 do not 


match with those of the control power. 


Make the phases (L4, Lə and L3) of the AC main power same as 
those of the control power. 





PS3 | Power Supply 


Board Error 


The Power Interface Board (PIFS) of 
the slave unit 2 is faulty. 











If the error occurs intermittently, contact the Allen-Bradley Company 
or replace the Power Interface Board (PIFS). 





(1) This is applicable only to Model 8720MC-RPS190BM and 8720MC-RPS190BS units. 


Accessing and Clearing the 
Entries in the Error Log 


The following procedure shows how to access and clear the error 
log. Note that you cannot clear a single entry from the error log. 
The entire log will be cleared simultaneously using this procedure. 





Step 1. 


Press the PRG key. 








When the operation panel becomes 
program mode, the User parameter 
will be displayed and the 








Step 2. 





"PROGRAM" status LED will turn 
ON. 


Press the W key until the "Err" is displayed. 




















8-6 Error Codes and Warning Buzzer 





Step 3. Press the ENT key. 


If there is no error that occurred, 
"0---" will be displayed. 

















If there is any error that occurred, 
the last error that occurred will be 
displayed. 

















Step 4. When the RST key is pressed while the error log is being 
displayed, all the entries of the error log will be cleared, 
and "Err" will be displayed again, indicating that the error 
log became empty. 

















Recovering from Fatal Error Fatal error codes normally indicate a malfunction of the Regulator 
Board. In some cases, fatal error codes can be reset by once 
disconnecting the power supply and reapplying power. But in order 
to prevent any problem, the Regulator Board must be replaced. 


The table below lists the fatal error codes. 





Error | Error 
Code |Description Error Cause Corrective Action 


SCx | Self Check Error Error was detected during Contact the Allen-Bradley Company or replace the Regulator 
self-diagnostics. "x" in the error code Board. 
shows an integer value of 1 to 7. 





CHS |Checksum Error Writing parameter value to EEPROM Set again the Unit Selection (F.001), and restore all the 
was not successful. parameters to the default values. 





If this error occurs intermittently, contact the Allen-Bradley 
Company or replace the Regulator Board. 




















CPU |CPU Error Unexpected error occurred during Contact the Allen-Bradley Company or replace the Regulator 
CPU internal calculation. Board. 
SYS System Error Unexpected error occurred. Contact the Allen-Bradley Company or replace the Regulator 
Board. 
Warning Buzzer Model 8720MC-RPS190BM and 8720MC-RPS190BS units are 


provided with thermo switch so that warning buzzer will alert 
operators when intake air temperature to the 8720MC-RPS 
Regenerative Power Supply exceeds about 50 degree C (122 degree 
F). In such a case, check the ambient temperature and the cooling 
fans. 


Chapter 9 


Inspecting Trouble and 
Recovering 


This chapter describes how to inspect troubles and take recovery 
actions. 





familiar with the construction and operation of this 
equipment and the hazards involved should install, 
adjust, operate or service this equipment. Read and 
understand this instruction manual in its entirety 
before proceeding. Failure to observe this precaution 
could result in destruction of the equipment, severe 
bodily injury or loss of life. 


ATTENTION: Do not install or remove any 

A components with power applied to the 8720MC-RPS 
unit. Disconnect and lock out incoming power before 
attempting such installation or removal. Failure to 


observe this precaution could result in destruction of 
the equipment, severe bodily injury or loss of life. 


^ ATTENTION: Only qualified electrical personnel 


voltages after input power has been disconnected. 
After disconnecting input power, wait for a while for 
the DC bus capacitors to discharge and then check the 
voltage with a voltmeter to ensure the DC bus 
capacitors are discharged before touching any internal 
components. Failure to observe this precaution could 
result in destruction of the equipment, severe bodily 
injury or loss of life. 


^ ATTENTION: DC bus capacitors retain hazardous 





1. Be sure that the input disconnect is in the correct position, 

either ON or OFF, depending on the work to be performed. 

Safety Precautions 2. A backup technician must be in line of sight when the work is 
being performed, to assist in case of emergency. 





continuity checks in the 8720MC-RPS Regenerative 
Power Supply. Use high resistance range of a circuit 
tester for this purpose. Failure to observe these 
precautions could result in damage to, or destruction 
of, the unit. 


^ ATTENTION: Do not use a megger to perform 





3. Useone hand to hold and connect test probes of multimeter and 
others. 


Preliminary Review L. 


Troubleshooting Flow 
Charts 


Inspecting Trouble and Recovering 


Turn OFF the input power to the 8720MC-RPS Regenerative 


Power Supply and wait until "POWER" lamp goes OFF. 


2. Verify that the DC bus voltage is zero and the DC bus 
capacitors are completely discharged. 


3. Check the following: 









The unit does not run. 


Check that no terminal is loose and that termination to the 


connectors is correct. 


Check that the incoming power voltage is correct. 


Check that the unit was installed correctly. 


Verify that all the coils possibly generating electrical noise 
around the unit, such as relays, solenoid-valves, and 
magnetic brakes are provided with surge suppressors. 


8720MC-RPS Regenerative Power Supply Does Not Run 








Power supply ON? 






YES 


RUN sequence 


NO 





Check the following: 
* Circuit breaker 

* Protection fuse 

* Wiring 

* Power supply 











input entered? 






YES 


Precharge is 


NO 





Check wiring for the sequence 
signals. 












completed? 


magnetic contactor 


NO 


» 


Check the following: 

* Setting of Precharge/Discharge 
Time (F.014) 

* Precharge/Discharge Resistor, 
and wiring to it 














operate? 


YES 





The unit is defective. 
Replace the unit. 








NO 


» 





Check the following: 

* Wiring for sequence signals 

* Wiring to coil of main magnetic 
contactor 

* Order of phases of wiring for main 
power supply and control power 











Inspecting Trouble and Recovering 9-3 


DC Bus Voltage Does Not Go Up 





DC bus voltage 
does not go up. 








Wiring correct? 


















POWER lamp 


NO 





Check the following: 

* Wiring to main power supply 
* Main magnetic contactor 

* Protection fuse 











lights ON? 






YES 





Setting of 


NO 





The unit is defective. 
Replace the unit. 











parameters correct? 





YES 





The unit is defective. 
Replace the unit. 








NO 


y 





Check the following parameters: 

* Unit Selection (F.000) 

* DC Bus Voltage Reference 
(U.000) 

* FWD Current Limit (U.001) 

* REV Current Limit (U.002) 














9-4 Inspecting Trouble and Recovering 


End of Chapter 


Chapter 10 


Special Replacement Parts 


This chapter describes the required replacement parts. 


The table below lists the replacement parts. The figures shown in 
the table show required quantities of the corresponding parts. 


The standards or specifications of the parts in the table might be 
changed by integration or abolition of parts. If you need spare 
parts, contact The Allen-Bradley Company. 





Required Quantities 
















































































Standard d REJ Part 

Fart Name Epéclficatloris Number | .8720MC- | 8720MC- | 8720MC- 8720MC- | 8720MC- 

RPS027BM | RPS065BM RPS065BS RPS190BM RPS190BS 

Regulator Board S-B0001 826751 1 1 0 1 0 

BDSR-1 

Power Interface Board | S-B0002-1 826752 1 1 1 1 1 

PIFS-11 

Driver Board S-B0003 826754 0 1 1 0 0 

RCPB-1 

Driver Board S-B0008 826755 1 0 0 0 0 

RCPB-2 

Base Driver Board S-B5081 826739 0 0 0 6 6 

BDI-091 

Snubber Resistance 05-03162-50 926531 0 0 0 1 1 

Board RB-1 

Fan Power Supply 05-03162-52 926522 0 0 0 1 1 

APS-011 

Fuse 500V FA16A 6X32 | 286040 1 1 1 0 0 
6JX30 (600V 30A) 286005 0 0 0 2 2 
6JX4 (600V 4A) 286011 0 0 0 1 1 

Power Module PM75DSA120 536700 3 0 0 0 0 
PM150DSA120 536603 0 3 3 0 0 
PM600HSA120-18 536170 0 0 0 6 6 

Capacitor ECOS2W331DB 450293 12 0 0 0 0 
450LGSN3800M 453783 0 2 2 8 8 

Cooling Fan U0A528500 926024 2 0 0 0 0 
MB-B0012 926504 0 2 2 0 0 
CN26 | 60-03136-00 926524 0 0 0 1 1 
CN27 | 60-03136-01 926525 0 0 0 1 1 

Resistor for U0A528400 926023 1 0 0 0 0 

Precharging and 3 

Discharging MB-B0011 926503 0 1 1 0 0 
60-03137-00 926526 0 0 0 1 1 

Cable for Parallel MB-B0013 352311 0 0 1 0 0 

Connection 60-03173-00 926523 0 0 0 0 1 

Interface Board FMI-1 | 05-03202-50 926530 0 0 0 1 1 

for EMC Filter Unit 


























10-2 


Special Replacement Parts 





Required Quantities 








ACL Unit 























VER i REJ ar | B720MC- | s8720MC- | 8720MC- | 8720Mc- | 8720MC- 
RPS027BM | RPSO65BM | RPSO65BS | RPS190BM | RPS190BS 

Capacitor for SMEGSLGSN 68000 | 450071 0 0 0 2 2 

EMC Filter Unit 

Cooling Fan for 60-03177-00 926529 0 0 0 2 2 





Decide the quantities of spare parts in consideration of the number 
of the connected units. 


Outline Drawing of 


the Reactors 








Outline Drawings of 
the Peripheral Devices 


Chapter 17 


This chapter provides dimensional outline drawings of reactors, 

varistors, harmonic filters, line filters and EMC filter unit out of the 
peripheral devices to be connected to the 8720MC-RPS 
Regenerative Power Supply. 


The figure below shows the dimensional outline drawing of the 
recommended reactors for Model 8720MC-RPS027BM, 8720MC- 
RPS065BM and 8720MC-RPS065BS units. 




































































































































































B «1/-0.5 























A 
eo 
I 
c 
eo 
i m d i i iT d T I 
eee rese H T raai if pees? pases od [ha 
7 ll L! ' | 7 pad [rss 
X | $ TEE p * TE i |< 
= = jg = = | i an = — i i an 
c MM Oe On us — xd 56 
1 D £ Q au^ PE I POI mom Poe D ^ ow mme nct D 1 Y 
(4) 15 dia 
Model Part Number | A B C D E F G H Weight [kg] 
8720MC-LR14-070B 261301 140 125 145 Max. 180 155 150 460 9.5 38 
8720MC-LR10-062B 261302 125 110 130 Max. 160 145 150 440 9.5 27 
8720MC-LR05-048B 261303 125 105 125 Max. 155 132.5 135 400 7 21 
8720MC-LR03-032B 261304 127 100 120 Max. 140 112.5 120 345 7 17 
































(Unit: Millimeters) 


11-2 


Outline Drawings of the Peripheral Devices 


The figure below shows the dimensional outline drawing of the 
recommended ACL units (AC reactor assemblies, Model 8720MC- 
LR10-100B) for Model 8720MC-RPS190BM and 8720MC- 
RPS190BS units. 











26.6 414 26.6 
$a | EN >| 
e| E 
Y | eg 
A T 
9 © © to) 
488 max. 
p 467.2 E 
| 38.6 zs 80 sik 75 80 go 75 ae 80 z5 38.6 
A | A ah. 4 43 
l O KA _ Ky «D» P 4» «» oO 
x X 
BN S 
& i X 
88: ZN 
3 \ # N 7 
+ ie à d 
l e L1 $ _ X L4] «m = «mee or oa 
x X 
|. [ep wo x A 
& il X < 
8 Z/N 
$ \ P. NU 
x y 
ace di SS 

































































































































































6 x R38-8 




















































































































































































































































































































































































































































































































AIR FLOW 


> 














Equivalent Circuit 


Weight 100 kg 


(Unit : Millimeters) 


Outline Drawings of the Peripheral Devices 11-3 
















































































Outline Drawing of The following figure shows the dimensional outline drawing of the 
the Varistors varistors to be used for Model 8720MC-RPS027BM, 8720MC- 
RPS065BM and 8720MC-RPSO65BS units. 
48 +/- 1 
[P "| 
D A 
O O O 
- Sle 
4 4 =) S 
RES 
Y : Equivalent Circuit 
oe : 1 
1O 
= 04.2 +/- 0.15 
N 3 Crimp Contacts of M6 = 
2 
+ w~ e 
e ~ ~ 
A 
Y 























Model : 8720MC-VA-B 
Part Number : 193431-Q01 
Leads : UL1015 : #18 


33.5 +/- 1 


(Unit : Millimeters) 

















11-4 Outline Drawings of the Peripheral Devices 


Outline Drawing of The following figure shows the dimensional outline drawing of the 
th H E Filt recommended harmonic filters to be used for Model 8720MC- 
e harmonic Filters RPS027BM, 8720MC-RPS065BM and 8720MC-RPS065BS units. 


17.5 +/-1.5 35 +/- 1 35 +/- 1 17.5 +/-1.5 








> 
» 











184-15 





2 Oval Holes of 5.5 mm x 8 mm 




















39 +/- 1.5 
65 +/- 1.5 





15 +/-0.5 




































































































































































































































































mF XD Ne EE 
x zi | 
+ 
w P 
A 1 
N N 1 Y 
40 +/- 1.5 ss 
» 105 +/- 1.5 m 
L 119.5 +/- 1.5 . 
» 131.5 +/- 1.5 
M5 Screw x 
p 
mm) [3 cA Oo 
pO CIT EE 
(eA —1 E H É al [ey 
: wo 
Display P. 
Lo 
l wo 
N 
ce) KI I Y. 
R S T 
Equivalent Circuit 
U 
E! 
G 2 
= m m m 
Model : 8720MC-HF-B2 























Part Number : 193432-Q02 
Note 1 : The N terminal is not usually used. 


L—— 
++ 
———$ 





(Unit : Millimeters) 








0.47 uF 











1 MQ 
| 
J 











ITlo—4 


Z 


17.5 +/-1.5 


35 +/-1 


Outline Drawings of the Peripheral Devices 


For your reference, the following figure shows the dimensional 
outline drawing of the harmonic filter used for Model 8720MC- 
RPS027BM, 8720MC-RPSO65BM and 8720MC-RPS065BS units. 


35 +/-1 


17.5 +/-1.5 



































2 Oval Holes of 5.5 mm x 8 mm 











22.5 +/-1.5 























15+/-0.5 








39 +/-1.5 
65 4-1.5 


























105 +/-1.5 





















































































































































$ 119.5 +/-1.5 d 
p 131.5 +/-1.5 | 
= i 
+ = 
Oy Z a "META 
Pe t ai L IO OE A | T TEE T B 
Bi 
Dist * 
play E 
| 1O 
N 
fa meea nas J I ae Y = 
Model : 8720MC-HF-B 
Part Number : 193432-Q01 (Unit: Millimeters) 
U V Ww -— 
Equivalent Circuit 
Tx 1SuF zu TuE nm 














11-6 Outline Drawings of the Peripheral Devices 


Outline Drawing of Figure 11.1 and 11.2 show the dimensional outline drawing of the 
the Line Filters recommended line filters for AC input power to be used for Model 
8720MC-RPS027BM, 8720MC-RPSO65BM and 8720MC- 


RPS065BS units when these units must conform with the require- 
ments of CE Mark. Figure 11.1 shows Schaffner's products and 
Figure 11.2 shows Soshin Electric's product. 


Figure 11.1 
Dimensional Outline Drawing of the Recommended Line Filter of Schaffner 
for AC input power for Model 8720MC-RPS027 and 8720MC-RPS065 Units 


F 
EA 
G 

I 


























A 
« E » 
« A » 
D C 
< > « 
|n 
© 
a ee 
y 
Model A B C D E F GO 
FN3100-35-33| 3354-1 |150+/-1| 60+/-0.6 | 3054-1 | 320 35 | 65| M5 
FN3100-80-35 379 | 220 | 90 350 | 364 | 65 65 M10 























(Unit: Millimeters) 





Outline Drawings of the Peripheral Devices 11-7 


Figure 11.2 

Dimensional Outline Drawing of the Recommended Line Filter of 
Soshin Electric for AC input power for Model 8720MC-RPS027 and 
8720MC-RPSO065 Units 


3 Input Terminals, L 8 Oval Holes, K 


MM — . " 













































































. aE + 
~ Fel Te 
\ a ee soc sas ofu ula 
Tol te 
=- pe 



































g 
He 

Q | 
Y— 

g 
yo 














/ le 





















































B > Moos . 

a A > / Grounding Terminal, M 

Model A B C1 C2 D E F 
HF3080C-TOA | 405+/-5 | 350+/-2 | 100+/-1 | 100+/1 | 220+/-2 | 200+/-1 | 180+/-2 
HF3030C-TMA 260 210 85 - 155 140 125 

Model G H J K L M 
HF3080C-TOA 56+/-1 2104/-2 | 1354/-2 | 4.25 mm R x 12 mm long | M8 | M6 
HF3030C-TMA 44 140 70 3.25 mm Rx8mmlong | M5 | M4 























(Unit: Millimeters) 


11-8 Outline Drawings of the Peripheral Devices 















































8720MC-EF190-VB Figure 11.3 shows the outline dimensions of Model 8720MC- 
; ; EF190-VB EMC filter unit for Model 8720MC-RPS190BM and 
EMC Filter Unit for 8720MC-RPS190BS units. The Model 8720MC-EF190-VB unit 
Model 8720MC- includes the varistor, magnetic contactor, harmonic filter, line filter, 
RPS190BM and grounding capacitor, fan and MC interface card and cable assembly 
for this unit. The connection diagram of Model 8720MC-EF190- 
8720MC-RPS190BS VB EMC filter unit is shown in Figure 11.3. 
Figure 11.3 
Dimensional Outline Drawing of Model 8720MC-EF190-VB EMC Filter Unit 
10 (0.39) dia. 
a 2 20 (0.78) dia. 
22). JN 
e, 
e 
TUN 
k 
L1/L2/L3 
EE 











e Allen-Bradley 














371 (14.6) 
455 (17.9) 


i1 L4/L5/L6 


























E 303 (11.9) 
o 

e 

S 390 (15.4) 

o 





Weight : 34 kg 


Unit: Millimeters (Inch) 


Outline Drawings of the Peripheral Devices 11-9 


Figure 11.4 
Connection Diagram of Model 8720MC-EF190-VB EMC Filter Unit 


































































































































































































































































































| CN4 | MC1 (TB4) | — fa ]i MC1 
: -«ao|! MC2 (TB4 : ——]A2 |: MC2 
24V2 (TB4) ` ——]a |! 424V2 
Lau] | tosreomc. [98099 | | 0 
To 8720MC- | L1aux (TB2)! strip i To 8720MC- į Strip ABT) 
Loaux (TB2)! Wi : 24V3(TB4) | Wire) — —]lB1Z|: 24V3 
RPS190 fee TB2): Wire i RPS190 ova Te ; | TH) "5 
i isl E ! 4) | — —]B3 |: SENS-OUT 
;,.60-08142-01 | 24V (Bs) ; EE E 
MC (TB3) : — ——]B5 C 
| 60-03141-01 | 
4 
f A1 ! Cabinet Fan+ 
r—]|^2 |: Cabinet Fan- F 
a |i 
MT ACLE $ 
Cooling Fan | RED | @— sa]: ACL Fan = rd * 4 
for ACL Unit | BLK | (QU—— —]B1 Sl SENS 
YLW i @—4 829); ACL Fan+ > 42483 
Cooling Fan | RED : Qu B3 d ACL Fan- p Uv 0V3 T 
for ACL Unit] BLK ; œ B4 SENS 
yw | Qui——j85 || 
i. 60-03144-01 | 0v3 














11-10 Outline Drawings of the Peripheral Devices 


End of Chapter 


Appendix A 


Technical Specifications 


Specifications for 8720MC Regenerative Power Supply 





Voltage Class 


15 kW Unit 37 kW Unit 125 kW Unit 
















































































Number of Units Single Single 2 Units 3 Units Single 2 Units 3 Units 
Connected in Parallel Unit Unit in Parallel in Parallel Unit in Parallel in Parallel 
Model Number 8720MC- | 8720MC- | RPSO65BM |RPSO65BM | 8720MC- | RPS190BM | RPS190BM 
RPS027BM|RPS065BM | RPSO65BS | RPS065BS |RPS190BM | RPS190BS | RPS190BS 
RPSO65BS RPS190BS 
Capacity of Motor to 15 37 75 110 125 250 375 
be Applied (kW) 
Rated Capacity of 20 45 90 135 152 304 457 
Power Supply (kVA) 
Input Power Factor 0.95 or higher 
3 Power Supply 380 to 460 VAC +10/-15%, 50/60 Hz +/- 5% 
£ | Rated Current (Arms) 28 65 130 195 190 380 570 
Maximum Current 42 98 196 294 285 570 855 
(1 min.) (Arms) 
PWM Carrier 5, 10 (standard), and 15 5 (standard), 10 and 15 
Frequency (kHz) 
Rated Output 19 45 90 135 133 266 399 
Capacity (kVA) 
5 | Voltage (V) 750 (standard) 
£ Rated Current (A) 27 64 128 192 190 380 570 
O| Maximum Current 40.5 96 192 288 285 570 855 
(1 min.) (A) 
Bus Capacitance (uF) 990 1900 1900 x 2 1900 x 3 7600 7600 x 2 7600 x3 
Protection Functions Overcurrent, overload, overvoltage, low voltage, and phase loss 
Output Signals RDY signal, FR signal, instantaneous power loss signal, and 


main magnetic contactor reference contact 





Monitor Display 
(WITH four character 
seven-segment LED) 


Input Signals 


Input current, input power supply voltage, DC bus voltage, 
power and load ratio 


RUN signal, RESET signal, and answer-back signal of main magnetic contactor 






































Place of Installation In a control cabinet (kept away from corrosive and dangerous gas) 
,, Ambient | (In use) -10 to 50 degree C (14 to 122 degree F) -10 to 40 degree C (14 to 104 degree F), 
5 | Temp. | (Stored) -40 to 65 degree C (-40 to 149 degree F) -40 to 65 degree C (-40 to 149 degree F) 
E Heat Dissipation (kW) 0.5 1.1 11x2 | 11x3 4.0 | 40x 2 40x 3 
£| Ambient Humidity 5 to 95% (non-condensation) 
k Elevation Lower than 1,000 meters (3,300 feet) above sea level 

Vibration Less than 1 G (25 Hz) 

Shock Less than 2 G 








Weight (kg (Ibs)) 11.0 13.5 13.5 x2 13.5x3 48.5 48.5x2 48.5x3 
(24.3) (29.7) (29.7 x 2) (29.7 x 3) (108) (108 x 2) (108 x 3) 
Note 1: The above specifications are those for the power supply of 400 Vrms AC (or 200 Vrms AC). If you continuously use the unit 
under a lower voltage than those stated, derating is required. 
2: Incase of units connected in parallel, derating is required proportionally to the fluctuation (dispersion) of inductances of AC 
reactors connected to phases. 
3: The values of the input power factor are those at the rated current of the units. 
4: When you desire to install a unit above 1,000 meters (3,300 feet), derate 4% for every 300 meters (1,000 feet) above 1,000 


meters (3,300 feet). If you install a unit above 1,500 meters (5,000 feet), contact Reliance Electric. 


A-2 Technical Specifications 


End of Appendix 


Appendix B 


Default Parameter Settings 


Default Parameter Settings Depending on the Unit and Number 
of Units Connected in Parallel 
































Unit Capacity 
8720MC-RPS027 8720MC-RPS065 8720MC-RPS190 
2 Units | 3 Units 2 Units | 3 Units 
Parameter Single Single | in in Single in in 
Number Parameter Name Unit Unit Unit |Parallel | Parallel | Unit | Parallel | Parallel 
F.001 Unit Selection 027.b 065.b | 130.b | 195.b | 190.b | 380.b | 570.b 
F.002 Rated Current Amps 28 65 130 195 190 380 570 
F.013 AC Reactor Capacity uH 850 1200 400 
F.015 Wattage of W 80 120 400 
Precharge/Discharge 
Resistor 























B-2 Default Parameter Settings 

Default Settings of All Parameters 
Parameter Parameter Name Setting Range Default Value User's Setting 
Number 





Setting | Date 







































































User U.000 | DC Bus Voltage Reference 275 to 750 V 750 V 
Parameters | y 501 | FWD Current Limit 0 to 150% 150% 
U.002 | REV Current Limit 0 to 150% 150% 
Factory F.000 | Password 0 to 999 0 
Parameters | E 491 | Unit Selection 027.b 28 Amps 
065.b 65 Amps 
130.b 130 Amps 
190.b 190 Amps 
195.b 195 Amps 
380.b 380 Amps 
570.b 570 Amps 
F.002 | Rated Current 027.b: 10 to 35Amps 027.b: 28 Amps 
065.b: 10 to 70 Amps 065.b: 65 Amps 
130.b: 20 to 140 Amps 130.b: 130 Amps 
190.b: 30 to 210 Amps 190.b: 190 Amps 
195.b: 30 to 215 Amps 195.b: 195 Amps 
380.b: 60 to 430 Amps 380.b: 380 Amps 
570.b: 90 to 645 Amps 570.b: 570 Amps 
F.003 | Current Control Proportional Gain 0.01 to 10.0 times 1.00 times 
F.004 | Current Control Integral Gain 1 to 3,000 rad/sec 64 rad/sec 
F.005 | Voltage Control Proportional Gain 0.01 to 30.00 times 5.00 times 
F.006 | Voltage Control Integral Gain 1 to 3,000 rad/sec 128 rad/sec 
F.007 | Bus Overvoltage Detection Level 325 to 900 V 800 V 
F.008 | Bus Low Voltage Detection Level 200 to 600 V 400V 
F.009 | AC Overvoltage Detection Level 200 to 550 V 550V 
F.010 | Carrier Frequency 5, 10 and 15 kHz 10 kHz: For Model 
8720MC-RPS027 and 
8720MC-RPS065 
5 kHz: For Model 
8720MC-RPS190 
F.011 Deadtime 1.5 to 15.0 microseconds 6.0 microseconds 
F.012 | Allowable Time for Instantaneous 0.05 to 3.00 seconds 0.50 seconds 
Power Loss 
F.013 | AC Reactor Capacity 100 to 8,000 micro-henry See the previous 
section. 

F.014 | Precharge/Discharge Time 0.5 to 15.0 seconds 3.0 seconds 9 
F.015 | Wattage of Precharge/Discharge 50 to 2,000 W See the previous 
Resistor section. 

F.016 | DC Bus Voltage Offset © 0.900 to 1.100 1.000 
F.017 | Discharge Function Enable “ OFF, On On 
F.018 | Version Information 

F.019 | Selecting of Wiring Error (LE) OFF, On On 








Detecting Function ? 














© These parameters are available from software version No. 2.00 or later only. 


9) This parameter is available from software version No. 3.00 or later only. 
(99 This parameter must be set to 6.0 seconds for 8720MC-RPS190 unit. 


Appendix C 


Control Block Diagram 


R-Phase Voltage 











































































d-Axis voltage Reference D 
-Axi ; Er Reference 7 -Ph Voltage 
fads Current Reference 0 Lg PI Calculation / il & - Rotating Shaf 2-Phase/ Neutral Point S ase vo lage 
5 Limit "Axis Voltage | static Shaft 3-Phase Voltage EE 
Reference | Conversion |__|Conversion| [Compensation Limit | Ege 

æL Compensation = 





(Non-interference 
Control) 









PI Calculation 






















Input Voltage 


d-Axis Feedback 
q-Axis Feedback 




















Compensation 
R-Phase 
Voltage F/B 
3-Phase/ Static Shaft/ 
T-Phase 2-Phase Rotating Shaft 
D Voltage F/B | Conversion Conversion 7 


























AC Input Power Supply Voltage| 


Since J 
Phase 0 Sine 
D Table | Cosine 6 i 









































DC Bus Voltage 


r q-Axis Current Reference 
Reference / PI Calculation Æ 


Ramp Limit 
































DC Bus Voltage 





E 





C-2 Control Block Diagram 


End of Appendix 


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Publication 8720MC-RM001C-US-P, Nov 01 © 2001 Rockwell International Corporation. Printed in Japan