Rockwell Automation SA500 AC Power Modules - Manual (Page 9)

Introduction 1-1
C
HAPTER
1
Introduction
The AutoMax Distributed Power System SA500 AC Power Modules provide AC power
to, and control of, brushless motors and squirrel-cage induction motors from 1–15HP.
Each Power Module contains the Power Module Interface (PMI) Regulator printed
circuit board and the inverter used to convert DC power to AC power for the motor.
Depending upon their power requirements, up to six Power Modules can be
daisy-chained together and operated from one SA500 DC Bus Supply, which provides
the Power Modules a nominal 325 VDC input power. The DC Bus Supply is described
in instruction manual S-3017.
The SA500 Power Modules are available in four sizes with a range of current ratings to
complement the variety of motors available. See table 1.1 below.
Table 1.1 – SA500 Power Modules
Part Number
Continuous Current
Rating (RMS)
Maximum Output
Current (RMS)
(0.5 seconds) 1
1. Power Module output current overload rating charts are provided in Appendix I.
Power Module specifications are listed in Appendix A. Detailed speed-torque curves
and engineering data for SA500 motors are included in Appendix B.
Figure 1.1 shows a typical SA500 drive configuration.
615055-1R 14 A 17.5 A (125%)
615055-1S 28 A 35 A (125%)
615055-1T 35 A 70 A (200%)
615055-1V 48 A 106 A (220%)