Rockwell Automation 8720MC 8720MC Regenerative Power Supply User Manual - Manual (Page 26)

2-14 About 8720MC-RPS Regenerative Power Supply
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.
Regulator Board
JP1 JP3
SW6
JP2
SW7
Sequence Signal
Terminal Block (TB3)
CN2
CN1
RST PRG ENT
READY READY
FAULT FAULT
PROGRAM PROGRAM kW kW
V
A
Microprocessor
• 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.