GE IC693PWR321L Power Supply

This power supply module provides stable DC power to Series 90-30 PLC backplanes. It converts high AC line voltage into low DC output for logic circuits. You can use this unit for new installations or as a drop-in replacement.

Technical Specifications

Parameter	Value
Model	GE IC693PWR321L
Category	Power Supply Module
Input Voltage	85–264 VAC (47–63 Hz) or 100–300 VDC
Output Voltage 1	+5 VDC at 3.0 Amps
Output Voltage 2	+24 VDC at 0.5 Amps (relay isolated)
Output Voltage 3	-0.5 VDC at 0.1 Amps for RS-485 bias
Total Output Power	20 Watts maximum
Inrush Current	15 Amps peak at 115 VAC
Hold-up Time	20 ms minimum at full load
Efficiency	75% typical at nominal load
Dimensions (W x H x D)	4.3 cm × 13.7 cm × 12.2 cm
Weight	0.55 kg (1.21 lbs)
Connector Type	One 5-pin removable terminal block
Component Count	1 main PCB + 1 transformer + 2 heatsinks + 1 LED indicator
Energy Storage	680 µF primary capacitor (400 V rating)

Output Design and Distribution

The GE IC693PWR321L delivers three distinct DC outputs for the PLC system. A +5 VDC rail powers all logic circuits and backplane communications. The +24 VDC output provides isolated power for relay coils and field devices. An additional -0.5 VDC rail supports RS-485 network biasing requirements.

Power Performance Characteristics

This module maintains 75% typical efficiency across a wide load range. It holds up the +5 VDC output for 20 milliseconds after input power loss. Consequently, your CPU continues operating through brief line sags or disturbances. The unit draws a peak inrush current of only 15 Amps at 115 VAC.

Installation and Compatibility

Mount this supply in the first slot of any Series 90-30 rack. The 5-pin terminal block accepts solid or stranded wires from 12 to 24 AWG. This module replaces older IC693PWR321 and IC693PWR321A units directly. You do not need any wiring changes or adapter plates for retrofits.

Energy Storage and Filtering

A 680 µF primary capacitor stores enough energy for the hold-up time specification. This capacitor also filters incoming AC line noise and voltage ripple. The module requires no external batteries or additional energy storage devices. Therefore, you get a maintenance-free power solution for your PLC system.

Thermal and Protection Features

The supply includes overcurrent protection on all three output rails. Short-circuit conditions will not damage the module or the backplane. An internal temperature sensor reduces output current if the unit exceeds 70°C. A green LED on the front panel indicates that all outputs are within specification.

Why Choose This Supply

Manufacturers prefer this power supply for its wide 85–264 VAC input range. You can install this module anywhere in the world without voltage selectors. Therefore, this unit suits packaging machines, material handling systems, and assembly lines.