Magnetek 144-45117-R3 - Manual (Page 5)

Regenerative Power Module - September 2010
144-45117-R3
Page 5 of 20
General Description
The Regenerative Power Module (RPM) is a universal brake chopper circuit designed to dissipate
regenerative energy produced by a motor into a fixed resistor load. The universal module covers the DC
supply voltage range from 200V to 660V. The voltage selector link located on the outside front cover of
the unit configures the module for LOW voltage (200V to 300V), MED voltage (300V to 500V) or HIGH
voltage (500V to 660V).
The module is powered from the DC bus and requires no additional power supplies. The module can
either be connected behind the M contactor of each drive or can be connected to the incoming DC bus
using a separate mounted controller that includes additional protective components and line capacitance.
This module is required whenever the main power supply cannot receive the regenerated power being
return to the line. The voltage on the OmniPulse DDC bus rises rapidly during regeneration (100 ms).
Bus feed rectifier units that do not have a dump circuit or have slow reacting circuits require the use of the
RPM module and dump resistor.
RPM Features
Ratings
Input Voltage Range Minimum 200VDC
Maximum 660 VDC
Brake Level Adjustment Range Minimum 256 VDC
Maximum 800 VDC
Rated Amps
Peak Brake Current 400A
800A
Duty Cycle (800A peak) 10% (40° C ambient)
5% (60° C ambient)
Minimum connected dump resistor 1 ohm
Maximum Operating Temperature 60° C
Minimum Operating Temperature -20° C
Universal Module (Voltage selector link, located on the front of the unit, configures module to DC Bus
voltage)
Link Setting DC Bus Range
330 V (Low) 200 – 300 VDC
495 V (Medium) 300 – 500 VDC
660 V (High) 500 – 660 VDC