GE IC693PWR321U Standard Power Supply

This standard power supply provides DC power to a Series 90-30 PLC rack. It converts high AC input into stable logic voltages. You will mount this unit in the leftmost slot of every CPU base.

Key Technical Specifications

The IC693PWR321U accepts an input range of 85 to 264V AC. Its maximum output power reaches 45 watts across three DC rails. The unit also includes an overvoltage protection circuit on the 5V output.

Parameter	Technical Data
Product Type	Series 90-30 Standard Power Supply
AC Input Range	85-264V AC, 47-63 Hz
DC Output 1 (5V)	5V DC @ 6A (30W)
DC Output 2 (24V relay)	24V DC @ 0.5A (12W)
DC Output 3 (24V user)	24V DC @ 0.3A (7.2W)
Total Output Power	45 Watts maximum
Inrush Current	20A peak at 120V AC
Dimensions (W x H x D)	5.1 cm x 13.6 cm x 12.7 cm
Total Weight	0.6 kg (1.32 lbs)
Input Connector	3-position screw terminal
Backplane Connector	24-pin expansion interface
Onboard Capacitors	15 electrolytic (total 820 µF)
Energy Storage	820 µF bulk capacitance
Hold-up Time	15 ms at full load
Operating Temperature	0°C to 60°C

Hardware Architecture and Energy Storage

The IC693PWR321U uses 820 µF of bulk capacitance for energy storage. This capacitance provides 15 ms of hold-up during input interruptions. Fifteen electrolytic capacitors filter ripple on all three output rails. A switching regulator operates at 75 kHz for balanced efficiency.

Interface and Connectivity

One 3-position screw terminal block accepts AC line and neutral wiring. A 24-pin backplane connector distributes DC power to the CPU and I/O modules. The front panel features a green LED for power-good status. Two large mounting tabs secure the supply to the rack chassis.

Practical Installation Notes

Install this power supply only in the leftmost slot of a Series 90-30 base. The IC693PWR321U requires no forced air cooling for normal operation. Always connect the ground terminal to the system earth bus. Verify the total backplane load does not exceed 45 watts for continuous use.