Rockwell Automation 8720MC User Manual
8720MC Regenerative
Power Supply
Installation Manual
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.
ATTENTION: Identifies information about practices
!
or circumstances that can lead to personal injury or death,
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
Manual
About 8720MC-RSP
Regenerative Power
Supply
Chapter 1
Introduction .................................................................................. 1-1
Finding Information ...................................................................... 1-1
Assumptions About the Audience................................................ 1-2
Notes on Handling the 8720MC-RPS Regenerative Power
Supply .......................................................................................... 1-3
Chapter 2
Model Numbers of the 8720MC-RPS Regenerative Power
Supply and its Accessories.......................................................... 2-1
Power Rating................................................................................ 2-2
Appearance of the 8720MC-RPS Regenerative Power Supply.. 2-2
Appearance of Model 8720MC-RPS027 and
8720MC-RPS065 ................................................................... 2-2
Appearance of Model 8720MC-RPS190................................ 2-4
Main Components and Locations ................................................ 2-5
Terminal Blocks on the Main Circuit ............................................ 2-10
Main Power Terminal Block (TB1) for Model 8720MC-
RPS027 and 8720MC-RPS065.............................................. 2-12
Control Power Terminal Block (TB2) for Model 8720MC-
RPS027 and 8720MC-RPS065.............................................. 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 ........................................................................... 2-14
Jumpers and Switches ........................................................... 2-15
Sequence Signal Terminal Block (TB3)................................. 2-17
Installation
Wiring
Chapter 3
Installation Site............................................................................. 3-1
Environmental Conditions to be Met ...................................... 3-1
Required Total Area ............................................................... 3-2
Recommended Air Flow Clearance ....................................... 3-7
Notes on Installation .................................................................... 3-7
Chapter 4
Recommended Wire Sizes .......................................................... 4-1
Recommended Wire Sizes for Power Wiring to the Main
Power Terminal Block (TB1) and the Main Power Terminal
Bars ........................................................................................ 4-2
Recommended Wire Sizes for Power Wiring to the Control
Power Terminal Block (TB2) and the Control Terminal
Block (TB4)............................................................................. 4-2
AC Input Power Wiring fot Model 8720MC-RPS027 and
8720MC-RPS065 ......................................................................... 4-3
When Model 8720MC-RPS027 or 8720MC-RPS065 is
operated in the Power Regeneration Mode only ................... 4-7
When Model 8720MC-RPS027 and 8720MC-RPS065 are
adapted to Capacitors having large capacity......................... 4-9
Installing Circuit Breaker ........................................................ 4-11
ii
Table of Contents
Installing Main Magnetic Contactor........................................ 4-11
Installing Reactor.................................................................... 4-12
Installing Varistor.................................................................... 4-13
Installing Harmonic Filter........................................................ 4-14
Installing Input Fuses ............................................................. 4-14
Installing Line Filters .............................................................. 4-14
Bus Bar and Output Fuses..................................................... 4-15
AC Input Power Wiring for Model 8720MC-RPS190................... 4-16
When Model 8720MC-RPS190 is operated in the Power
Regeneration Mode only ........................................................ 4-22
When Model 8720MC-RPS190 is adapted to Capacitors
having large capacity ............................................................. 4-24
Installing Circuit Breaker - 8720MCRPS190.......................... 4-26
Installing ACL Unit (Reactor Assembly) - 8720MC-
RPS190 .................................................................................. 4-26
Installing Fuses - 8720MC-RPS190....................................... 4-27
Installing 8720MC-EF190-VB EMC Filter Unit....................... 4-28
Installing DC Bus Power Output Wiring - All RPS units .............. 4-29
Grounding the 8720MC-RPS Regenerative Power Supply......... 4-29
Wiring To Comply with EMC........................................................ 4-30
Sequence Signal Wiring............................................................... 4-32
Sequence Signal Wiring ......................................................... 4-32
Operation Timing of Sequence Control Signals .................... 4-33
Installing Ribbon Cables .............................................................. 4-36
Notes on Wiring............................................................................ 4-37
Start and Adjustment
Operation Panel
Parameters
Chapter 5
Checking before Powering up the 8720MC-RPS Regenerative
Power Supply .................................................................................. 5-1
Verifying the Installation ............................................................ 5-1
Verifying the Rating of the 8720MC-RPS Regenerative
Power Supply ............................................................................ 5-2
Verifying Wiring ......................................................................... 5-2
Powering up the 8720MC-RPS Regenerative Power Supply ........ 5-2
Operating the 8720MC-RPS Regenerative Power Supply............. 5-3
Chapter 6
Configuration of the Operation Panel ............................................. 6-1
Operation Modes............................................................................. 6-1
Monitor Mode............................................................................. 6-2
Program Mode........................................................................... 6-3
Display............................................................................................. 6-3
Keypad ............................................................................................ 6-4
Status LEDs .................................................................................... 6-5
Chapter 7
Parameter Types............................................................................. 7-1
Protecting Parameters with Password............................................ 7-3
Displaying and Changing Parameter Values.................................. 7-3
User Parameters ............................................................................. 7-3
Factory Parameters ........................................................................ 7-5
Table of Contents
iii
Error Codes and
Warning Buzzer
Inspecting Trouble
and Recovering
Special Replacement
Parts
Outline Drawings of
the Peripheral Devices
Chapter 8
Contents of Error Codes and Recovering ...................................... 8-2
Accessing and Clearing the Entries in the Error Log ..................... 8-5
Recovering from Fatal Error ........................................................... 8-6
Warning Buzzer............................................................................... 8-6
Chapter 9
Safety Precautions .......................................................................... 9-1
Preliminary Review ......................................................................... 9-2
Troubleshooting Flow Charts.......................................................... 9-2
8720MC-RPS Regenerative Power Supply Does Not Run ...... 9-2
DC Bus Voltage Does Not Go Up ............................................. 9-3
Chapter 10
Chapter 11
Outline Drawings of the Reactors................................................... 11-1
Outline Drawing of the Varistors..................................................... 11-3
Outline Drawing of the Harmonic Filters......................................... 11-4
Outline Drawing of the Line Filters ................................................. 11-5
8720MC-EF190-VB EMC Filter Unit for Model 8720MC-RPS190BM
and 8720MC-RPS190BS ................................................................ 11-7
Technical Specifications
Default Parameter Settings
Control Block Diagram
Appendix A
Appendix B
Appendix C
iv
Table of Contents
End of Table of Contents
Contents of This Manual
Chapter
1
Introduction
Finding Information
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-RPS065BS,
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.
• Attenuation of the higher order harmonics in the line current.
• Safety interlocks and protection.
This manual describes the details of the 8720MC-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 is briefly described below:
• 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
• Chapter 2: About 8720MC-RPS Regenerative Power Supply
Identifies components of the 8720MC-RPS
Regenerative Power Supply, shows their locations,
and describes the main components.
• Chapter 3: Installation
Describes how to mount the 8720MC-RPS
Regenerative Power Supply properly.
• Chapter 4: Wiring
Describes how to properly wire and connect the
8720MC-RPS Regenerative Power Supply.
• Chapter 5: Start and Adjustment
Provides information on how to perform a final
check before power is applied, and instructions on
basic operation.
• Chapter 6: Operation Panel
Describes the composition and contents of the
operation panel.
• Chapter 7: Parameters
Provides detailed description of each parameter.
• Chapter 8: Error Codes and Warning Buzzer
Describes contents of error codes and how to
correct problems.
• Chapter 9: Inspecting Trouble and Recovering
Describes how to inspect and troubleshoot the
8720MC-RPS Regenerative Power Supply.
• Chapter 10: Special Replacement Parts
Provides a list of required replacement parts.
• Chapter 11: Outline Drawings of the Peripheral Devices
Provides outline dimensions of converters,
reactors, varistors, harmonic filters and line filters.
• Appendix A: Technical Specifications
Lists specifications of the 8720MC-RPS
Regenerative Power Supply in table form.
• Appendix B: Default Parameter Settings
Provides the default values of the parameters in
table form.
• Appendix C: Control Block Diagram
Provides a control block diagram.
Assumptions About the Audience
This manual is intended for electrical personnel familiar with the
operation of this equipment and the hazards involved.
Contents of This Manual
1-3
Notes on Handling the
8720MC-RPS Regenerative
Power Supply
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.
!
PWR
CAUTION!
WHEN YOU APPL Y POWER
AGAIN, VERIFY THAT
THIS LAMP "PWR" IS
TURNED OFF.
ME-B6013
!
DANGER
RISK OF ELECTRICAL SHOCK. DISCONNECT INPUT
POWER BEFORE SERVICING EQUIPMENT.
ME-B6015
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
Chapter
About 8720MC-RPS Regenerative Power Supply
This chapter describes model numbers, major components, their
locations, and terminal blocks of 8720MC-RPS Regenerative Power
Supply.
2
Model Numbers of the 8720MCRPS Regenerative Power
Supply and its Accessories
For operation of the 8720MC-RPS Regenerative Power Supply, a
line reactor is required for each incoming phase as well as a
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
BASE CATALOG NUMBER - CONVERTER
REGENERATIVE POWER SUPPLY SIZE
027 = 27 amp
065 = 65 amp
190 = 190 amp
INPUT VOLTAGE
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.
Line Reactor
8720MC-LRxx-ayyyb
Inductance as % Voltage Drop
03 = 3%
05 = 5%
10 = 10%
14 = 14%
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
Voltage
B2 = 380 to 460 VAC
Voltage
B = 380 to 460 VAC
Current Rating
190 = 190 Amp
Voltage
B = 380 to 460 VAC
Harmonic Filter
8720MC-HF-b
Varistor
8720MC-VA-b
EMC Filter Unit
8720MC-EFxxx-Vb
2-2
REGENERATIVE POWER SUPPLY
MC
READY
FAULT
PROGRAM
kW
About 8720MC-RPS Regenerative Power Supply
Power Rating
Appearance of the 8720MCRPS 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
15 kW
37 kW
Connection
Single Unit
Single Unit
Two paralleled units
Model Number
8720MC-RPS027BM x 1
8720MC-RPS065BM x 1
8720MC-RPS065BM +
Power Rating
15 kW
37 kW
75 kW
8720MC-RPS065BS x 1
Three paralleled units
8720MC-RPS065BM +
110 kW
8720MC-RPS065BS x 2
125 kW
Single Unit
Two paralleled units
8720MC-RPS190BM x 1
8720MC-RPS190BM +
125 kW
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 8720MC-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
Hole for Cover Fixing Screw <1
Power Lamp
Front Cover
8720
READY
FAULT
PROGRAM
M
A
V
kW
ENT
PRG
RST
C
E
G
E
R
Y
L
P
P
S
U
R
W
E
P
O
IV
E
T
A
R
E
N
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
READY
FAULT
PROGRAM
kW
POWER
Control Power Terminal Block (TB2)
Unit After Removing Regulator Board
When the front cover is removed from the 8720MC-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.
Unit After Removing Front Cover
POWER
Main Power Terminal Block (TB1)
READY
FAULT
PROGRAM
A
V
kW
ENT
PRG
RST
Regulator Board (only for Master Unit)
Sequence Signal Terminal Block (TB3)
2-3
The control power terminal block (TB2) for Model 8720MCRPS027 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.
2-4
REGENERATIVE POWER SUPPLY
8720
MC
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.
L2
L3
L1
Main Power Terminals
Unit Front View
Hole for Cover Fixing Screw
Power Lamp
Front Cover
READY
FAULT
PROGRAM kW
M
8720
PN
A
V
ENT
PRG
RST
C
E
G
E
R
Y
L
P
P
S
U
R
W
E
P
O
IV
E
T
A
R
E
N
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.
Fuse1
Fuse2
Fuse3
READY
FAULT
PROGRAM kW
ENT
PRG
RST
L
L
L
PR1
PR2
PR3
+24V3
0V3
SENS
+24V2
0V2
MC1
MC2
Unit After Removing Front Cover
1AUX
2AUX
3AUX
Control Power Terminak Block (TB2)
Control Terminal Block (TB4)
A
V
Regulator Board (only for Master Unit)
Sequence Signal Terminal Block (TB3)
About 8720MC-RPS Regenerative Power Supply
2-5
Main Components and Locations
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. Regulator Board (BDSR) (only master unit has a Regulator
Board, not on slave unit)
2. Power Interface Board (PIFS)
3. Driver Board (RCPB)
4. Bus Capacitors
5. Cooling Fan
6. Power Modules
7. Fuse-1
8. Precharge/Discharge Resistor
The following figure shows the locations of the main components
of Model 8720MC2-RPS027BM.
4
8
7
6
2
3
1
Unit Front Side
5
2-6
About 8720MC-RPS Regenerative Power Supply
Model 8720MC-RPS065BM and 8720MC-RPS065BS have the
following main components.
1. Regulator Board (BDSR) (only master unit has a Regulator
Board, not on slave unit)
2. Power Interface Board (PIFS)
3. Driver Board (RCPB)
4. Bus Capacitors
5. Cooling Fan
6. Power Modules
7. Fuse-1
8. Precharge/Discharge Resistor
The following figure shows the locations of main components of
Model 8720MC-RPS065BM and 8720MC-RPS065BS.
6
7
4
3
8
2
1
Unit Front Side
5
About 8720MC-RPS Regenerative Power Supply
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)
2. Power Interface Board (PIFS)
3. Bus Capacitors
4. Cooling Fan
5. Power Modules
6. Fuses 1, 2, 3
The following figure shows the locations of main components of
Model 8720MC-RPS190BM and 8720MC-RPS190BS.
5
2-7
3
2
FU1
FU2
FU3
6
1
Unit Front Side
4
2-8
READY
FAULT
PROGRAMkWkW
About 8720MC-RPS Regenerative Power Supply
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 8720MCRPS027 and 8720MC-RPS065.
8720MC-RPSxxxvm-HV2
2) Line Filter for
Main Circuit
*
3) Line Filter for
Sequence Power
4) Circuit
Breaker
*
5) AC
Input Fuse
7) Varistor
8720MC-VA-B
9) Main
Magnetic
Contactor
8) Harmonic Filter
8720MC-HF-B2
10)
Reactor
8720MC-LR
1) 8720MC-RPS
POWER
ss
4000
Synchronous Rectifier
A
READY
FAULT
V
PROGRAM
ENT
PRG
RST
6)DC Output
Fuse
READY
FAUL
PROGRAM
kW
About 8720MC-RPS Regenerative Power Supply
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-RPS190.
1) 8720MC-RPS
2-9
2) Circuit
Breaker
3) AC Input
Fuse
5) EMC
Filter Unit
8720MC-EF
6) ACL Unit
8720MC-LR
POWER
ss
4000
Synchronous Rectifier
A
READY
FAUL
T
V
PROGRAM
kW
ENT
PRG
RST
For more information, refer to Chapter 4 of this manual.
4) DC Output
Fuse
2-10
About 8720MC-RPS Regenerative Power Supply
Terminal Blocks on the Main Circuit
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 8720MCRPS065BS is shown in Figure 2.1.
Figure 2.1
Terminal Blocks on the Main Circuit for RPS027 and RPS065 units
TB1
G
L
1
L
2
L
3
PR
PR FUSE1
TB2
L
1AUX
L
2AUX
L
3AUX
PR1
PR2
PR3
MC1
MC2
Precharge/
Discharge
Resistor
TB1
P
+
+
DIS
N
Driver Board RCPB
CN17
CN16
CN5
Power Interface Board PIFS
1> The G terminal for Model 8720MC-RPS027 is located on the front surface of the chassis.
About 8720MC-RPS Regenerative Power Supply
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
2-11
L
L
L
1AUX
2AUX
3AUX
PR1
PR2
PR3
G
L
1
L
2
L
3
TB2
TB4
Precharge/
Discharge
Resistor
Fuse 3
PR
PR
DIS
Fuse 2
Fuse 1
CN17
CN16
Power Interface Board PIFS
CN5
CN5
CN16
BDI
BDI
P
N
MC1
MC2
CN20
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
Main Power
Terminals
DC Bus Terminals
Grounding Terminal
Symbol
, L2, L
L
1
P, N
G
Description
To connect three-phase AC input power to
3
the main circuit.
For 460 V unit: 380 to 460 VAC +10%,
-15%, 50/60 Hz +/-5%
To connect the 8720MC-RPS Regenerative
Power Supply to load equipment.
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
Control Power Terminals
Terminals to Connect
Precharge/Discharge
Resistor
Control Terminals for
Main Magnetic Contactor
Symbol
L
1AUX
,
L
2AUX
,
L
3AUX
PR1,
PR2,
PR3
MC1,
MC2
Description
To connect three-phase AC input power to the
control circuit.
For 460 V unit: 380 to 460 VAC +10%, -15%,
50/60 Hz +/-5%
To connect precharge/discharge resistor.
When the built-in resistor is used:
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.
To be used as the control terminals for the
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-RPS190.
Terminal Name
Main Power
Terminals
DC Bus Terminals
Grounding Terminal
Symbol
, L2, L
L
1
P, N
G
Description
To connect three-phase AC input power to
3
the main circuit.
For 460 V unit: 380 to 460 VAC +10%,
-15%, 50/60 Hz +/-5%
To connect the 8720MC-RPS Regenerative
Power Supply to load equipment.
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.
T
B
2
T
B
4
Symbol
L
1AUX
,
L
2AUX
,
L
3AUX
PR1,
PR2,
PR3
+24V3
0V3
SENS
+24V2
0V2
MC1
MC2
Description
To connect three-phase AC input power to the
control circuit.
For 460 V unit: 380 to 460 VAC +10%, -15%,
50/60 Hz +/-5%
To connect precharge/discharge resistor.
When the built-in resistor is used:
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.
To supply AC power to the fan for the AC reactor
unit through the EM4000 EMC filter unit.
To enter fault signal of the fan for the AC reactor
unit.
To supply power to the main magnetic contactor
and the fan for the cabinet fan through the
8720MC-EF190 EMC filter unit.
To be used as the control terminals for the main
magnetic contactor.
Terminal Name
Control Power
Terminal
Terminals to Connect
Precharge/Discharge
Resistor
AC Reactor Fan
Power Terminals
Terminals for Fan Fault
Signal
Power Terminals for
Main Magnetic
Contactor MC
and Optional Fan
Control Terminaks for
Main Magnetic
Contactor
2-14
READY
FAULT
PROGRAM
kW
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.
CN2
CN1
SW7
JP2
READY
FAULT
PROGRAM
RST
PRG
ENT
JP1 JP3
SW6
A
V
kW
Microprocessor
Sequence Signal
Terminal Block (TB3)
• 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 .
• 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
Jumpers and Switches
ATTENTION: Only qualified electrical personnel
!
!
!
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: Do not press the reset button switch
(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 alter the settings of any
jumpers not described in this manual. Failure to
observe this precaution could result in damage to, or
destruction of, the equipment.
2-15
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:
• 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.
Do not press the reset switch SW6 during operation.
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
SW7-3
SW7-2
SW7-1
ON
ENABLE BASE BLOCK
OFF
Keep SW7-4 always to the OFF side.
When the switch is turned to the OFF side, the base signal is
interrupted, and the unit will be in the OFF condition.
When the switch is turned to the ON side, the base signal is
kept ON, and PWM switching will continue.
About 8720MC-RPS Regenerative Power Supply
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.
2-17
Name of Terminal
Sequence Input
Signals
Power for
Sequence Signals
Sequence Output
Signals
Symbol
MC
RST
PWR
0 V
24 V
COM
IP
RDY
Description
Enter the supplemental contact signal (normally open contact) of the main magnetic contactor.*
4.7K
MC
1K
24V
8720MC-RPS
The reset signal (+24 VDC) is used to reset fault. Close this reset signal as required.*
4.7K
RST
1K
24V
8720MC-RPS
Enter the RUN signal (+24 VDC)*.
4.7K
PWR
1K
24V
8720MC-RPS
0 V of +24 VDC power.
+24 VDC power (rating : 24 VDC/0.2 Amps).
Common for IP and RDY signals.
This is a contact signal that is turned ON during instantaneous power loss (contact rating : 30 VDC/
50 mA).
24V
0V
COM
IP
8720MC-RPS
This is a contact signal that is turned ON while the unit is ready for operation (contact rating : 30 VDC/
50 mA).
24V
0V
COM
RDY
8720MC-RPS
MC
+VC
0VC
IP
4.64K
+VC
0VC
RDY
4.64K
* Because driving current of sequence input signals
is 5mA and below, use a contact of which
minimum applicable load is 5mA and below.
* Because driving current of sequence input signals
is 5mA and below, use a contact of which
minimum applicable load is 5mA and below.
* Because driving current of sequence input signals
is 5mA and below, use a contact of which
minimum applicable load is 5mA and below.
Load
Load
FR, FR
This is a contact signal that opens while fault occurs (contact rating : 250 VAC/1 Amp or 30 VDC/
1 Amp).
8720MC-RPS
FR
FR
2-18
About 8720MC-RPS Regenerative Power Supply
End of Chapter
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