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RX3i PWR331 Power Supply

Rated 4.3/5 Based on 8 ratings.

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SKU 2175023  UPC 0314041441747


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Other Available Revisions for the IC694PWR331 IC694PWR331AIC694PWR331BIC694PWR331-LT

Common misspellings:
  • 1C694PWR331
  • IC69APWR331
  • IC694PWR33l
  • IC694PWR331

Technical Specifications for IC694PWR331

ManufacturerGE Fanuc
SeriesRX3i PACSystems
Part NumberIC694PWR331
Product TypePower Supply Module
Power Supply TypeHigh-Capacity Power Supply
Current Rating5A
Compatible BackplaneSerial Expansion Backplane
LED Indicators3
LED TypesPWR, OK, and RUN
Conductor TypeCopper
Conductor Rating75 degrees Celsius

Product Description

The IC694PWR331 is a 24 volt DC, 30 Watt High Capacity Power Supply from the GE Fanuc RX3i Series. See specifications for this unit on IC694PWR331's website page.

Technical Specifications

Nominal Rated Voltage:   24 volt DC
Input Voltage Range: 12 VDC to 30 VDC
Input Power: 50 Watts
Load Capacity: 30 Watts
Module Type: Expansion Power Supply
Backplane Support: Remote Bases Only



The GE Fanuc Automation manufactures the IC694PWR331 power supply module as a member of the GE RX3i PACSystems product line. It is a high-capacity power supply designed for use with the GE RX3i PACSystems series PLCs. This module also works as a serial expansion unit which is compatible and usable with every CPU in the GE RX3i product family. The IC694PWR331 power supply is installed in the serial expansion backplane of the PLC, and this should only be done after disconnecting the power to the backplane. This high-capacity power supply has a current rating of 5 Amps, and it can accommodate protection fuses such as the 44A724627-114 fuse and the Bussman GMC-5-R fuse. Before this high-capacity power supply is installed, technicians need to ensure that the DIP switch on the expansion backplane is put in the right position.

The GE Fanuc Automation RX3i PACSystems IC694PWR331 power supply module comes with a 30 Watts load capacity at maximum. This module features 3 outputs that consist of a 24 Volts DC isolated output, a 5 Volts DC output, and a relay output rated at 24 Volts DC. The highest loads that this power supply module can handle include loads of 30 Watts at an output voltage of 5 Volts DC, 15 Watts at a relay voltage of 24 Volts DC, and 20 Watts at an isolated voltage of 24 Volts DC. The GE Fanuc IC694PWR331 power supply module uses conductors that are made of copper and that have a temperature rating of at least 75 degrees Celsius. It also features 3 LED indicators which are the “OK,” “PWR,” and “RUN” LED indicators.

Technical Information


Nominal Rated Voltage Input Voltage Range



24 Vdc


18 to 30 Vdc

12 to 30 Vdc

Input Power

50 W maximum at full load

Inrush Current14

4 A peak, 100  ms, maximum


Output Power

5 Vdc: 30 W maximum (Derate per Figure 114)

24 Vdc Relay: 15 W maximum

24 Vdc Isolated: 20  W maximum

NOTE: 30 W maximum total (all three outputs)


Output Voltage

5 Vdc: 5.0 to 5.2 Vdc (5.1 Vdc nominal)

24 Vdc Relay: 19.2 to 28.8 Vdc

24 Vdc Isolated: 19.2 to 28.8 Vdc

Isolation (input to backplane)

1500 Vac (for 1 minute)

Protective Limits




5 Vdc output: 6.4 to 7 Vdc

5 Vdc output: 7 A maximum

Ride-through Time:

10 ms minimum. This is the length of time the power supply maintains valid outputs if the power source  is  interrupted


5 A, GE part number 44A724627-114.

Refer to Module Fuse List, Section


Troubleshooting IC694PWR331

Troubleshooting information is available on IC694PWR331's website page; it also includes a datasheet user-manual and a wiring diagram.


Repair your IC694PWR331

PDF Supply can repair your IC694PWR331 in 3-5 business days. And PDF Supply stands by all of its repairs with a 1 year customer satisfaction warranty.



Rx3i Power Supply affected when portable/mobile radio is activated


Applications where the RX3i PLC is exposed to RF energy, such as portable/mobile radios, may cause the power supply to shutdown when the radio is keyed. Specifically, we have observed radios operating in the 800 to 900 MHz range can cause this condition. Other frequencies may cause this condition as well where the field strength exceeds our specification.


Testing Conducted and Observations:

The field strength of the suspect radio was measured to be 59 V/m at 4cm from the antenna of the radio, 25 V/m at 1m from the antenna, and 11 V/m at 2m from the antenna. We design our systems to an IEC standard test rating specification of 10 V/m at the equipment under test. During the test with the radio, the RX3i power supply was unaffected by field strengths of 25 V/m or less, which is at least 2 1/2 times our design specification. At higher field strengths, the power factor correction circuit is affected, causing the power supply shutdown. For reference, the S90-30 AC power supply does not have this circuit, therefore they are not similarly affected. The tests were performed in a field strength chamber to insure consistent results.


We suggest placing the Rx3i system in a metal enclosure if using the AC power supply under these conditions. The RX3i DC supply, which uses a different design, was tested and works well under the same conditions.

Part Number reference:

Power Supply Type

Catalog Number

120/240 VAC, 125 VDC, 40 Watt Power Supply


120/240 VAC, 125 VDC, 40 Watt, Multi-Purpose Power Supply


24 VDC, 40 Watt Power Supply


24 VDC, 40 Watt Multipurpose Power Supply


120/240 VAC, 125 VDC, Serial Expansion Power Supply**


120/240 VAC, 125 VDC, High Capacity Serial Expansion Power Supply**


24 VDC, High Capacity Serial Expansion Power Supply**


** The Expansion power supplies listed are NOT affected by this condition.


Customer Questions and Answers

  • Question:  What is an IC694PWR331?  Answer:  The IC694PWR331 is a 24 VDC High Capacity, 30 Watt Power Supply from the GE Fanuc RX3i Series.
  • Question:  What does IC694PWR331 allow the 30 watts to do?  Answer:  For applications requiring greater +5 VDC current capacity than is available with a standard supply (IC694PWR321), this High-Capacity Power Supply allows all 30 watts to be consumed from the +5 VDC output. 
  • Question: From what input voltage source range does IC694PWR331 operate?  Answer:  This Power Supply operates from an input voltage source in the range of 12 to 30 VDC. (Although it is capable of maintaining all outputs within specifications with input voltages as low as 12 VDC, it does require an initial input voltage of 18 VDC to start up.)
  • Question: What outputs does IC694PWR331 provide?  Answer: 
    • +5 VDC output
    • Relay +24 VDC which provides power to circuits on Output Relay modules
    • Isolated +24 VDC, which is used internally by some modules. It can also be used to provide external power for 24 VDC input modules.
  • Question:  Can IC694PWR331 be installed in an Expansion Backplane in an RX3i system?  Answer:  Yes, but the battery backup and serial port functions are not available in Expansion Backplanes.
  • Question:  What does the PWR LED indicate?  Answer:  The green PWR LED shows the operating state of the Power Supply. PWR is ON when the Power Supply has a correct source of power and is operating properly. It is OFF when a Power Supply fault occurs or power is not applied.
  • Question:  What does the OK LED indicate?  Answer:  The green OK LED is steady ON if the PLC is operating properly. It is OFF if a problem is detected by the PLC. 
  • Question:  What does the RUN LED indicate?  Answer:  The green RUN LED is ON when the PLC is in Run mode. 
  • Question:  What is the input power (maximum with full load)?  Answer:  50 Watts maximum at full load
  • Question:  What is the output power?  Answer: 
    • 5 VDC: 30 Watts maximum
    • 24 VDC Relay: 15 Watts maximum
    • 24 VDC Isolated: 20 Watts maximum
      • Note: 30 Watts maximum total (all 3 outputs)
  • Question:  What is the protective limit for overcurrent?  Answer: 
    • 5 VDC output: 7 Amperes maximum
      • The 5 VDC output is electronically limited to 7 Amps. If an overload (including short circuits) occurs, it is sensed internally and the Power Supply shuts down. The Power Supply will continually try to restart until the overload condition is removed. An internal fuse in the input line is provided as backup. The Power Supply usually shuts down before the fuse blows. The fuse also protects against internal supply faults.
  • Question:  What should I do if my IC694PWR331 is not operating properly?  Answer: 
    • Your IC694PWR331 may need repair.

For more information on the IC694PWR331 24 VDC High Capacity, 30 Watt Power Supply of the GE Fanuc RX3i Series, please see the Datasheet User-Manual.

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