Rockwell Automation SA3000 High Power Modules - Manual (Page 9)

Introduction 1-1
C
HAPTER
1
Introduction
The High Power SA3000 Power Modules are variable-voltage, variable-frequency
power inverters for Distributed Power System (DPS) drives. They are designed to
operate from a separate converter (diode bridge, phase-controlled rectifier, SB3000
Synchronous Rectifier, or a common DC bus supply) to drive induction motors at
variable speeds using pulse-width modulation (PWM) technology.
The SA3000 Power Modules are configured in three output current ratings: 534 amp,
972 amp, and 1457 amp when used at a 2 kHz carrier frequency. They have a range
of AC Input voltage ratings. See table 1.1. Nominal DC bus voltage may range from
300 to 800 VDC.
4 kHz operation requires a derating of the AC input current and DC output load current
when compared with operation at 2 kHz. See table 1.1.
The SA3000 Power Module output current ratings given are 100% continuous with no
overload. They may be derated for lower current ratings with overload capability.
1.1 Standard Features
High Power SA3000 Power Modules have the following standard features:
• IGBT power semiconductor bridge
• Carrier switching frequencies from 2 to 4 kHz
• Input and output short-circuit protection
• Fiber-optic communication with the DPS host, the Universal Drive Controller (UDC)
module
Table 1.1 – SA3000 Power Module Configurations
Base Part
Number
Cabinet
Type
DC Bus
Input Volts
Output
Amps
(2 KHz)
Output
Amps
1
(4 KHz)
Peak
Amps
2
AC Input
Volts
850020-11xxx
850020-21xxx
One Bay 250-820V
3 534A 445A 700A 230-460V
850020-12xxx
850020-22xxx
Two Bays 250-820V 972A 890A 1275A 230-460V
850020-13xxx
850020-23xxx
Three Bays 250-820V 1457A 1335A 1900A 230-460V
1. Output current ratings at 40° C (104° F) ambient air temperature and 60 Hz. Reduce all output current ratings by 5% when the Power
Module blowers are operated from a 50 Hz power source.
2. Contact Rockwell Automation for duty cycle ratings.
3. 800 VDC if an SA3000/SA3100 unit is used to supply 575 VAC output to the motor.