The GE Fanuc IC693PWR331, also cataloged as the IC693PWR331 High-Capacity Power Supply Module, operates as a dedicated hardware component for internal backplane bus powering and DC voltage conversion within Series 90-30 PLC systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC693PWR331 |
| Brand | GE Fanuc Emerson |
| Origin | USA |
| Weight | 1.25 lbs (0.57 kg) |
| Dimensions | Single-slot Series 90-30 module width |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 50 W with VDC Input / 90 VA with VAC Input |
| Nominal Rated Voltage | 24 VDC / 48 VDC |
| Input Voltage Range | Start: 21 to 56 VDC / Run: 18 to 56 VDC |
| Inrush Current | 4 A peak, 100 ms maximum |
| Output Capacity | Total 30 Watts maximum load capacity |
| Output Voltages | +5 VDC (30 W max), +24 VDC Relay (15 W max), +24 VDC Isolated (20 W max) |
| Holdup Time | 14 ms minimum |
| Physical Terminals | 3 terminal screws |
| Diagnostic Display | PWR, OK, RUN, BATT LED indicators |
Backplane Bus Communication Velocity & Firmware Power Distribution
The IC693PWR331 power supply module converts primary DC input power to distribute +5 VDC logic power alongside auxiliary +24 VDC relay and isolated +24 VDC output rails directly to the Series 90-30 backplane. Deterministic network timing and backplane bus communication velocity rely on low ripple regulation across the 5 VDC rail during module processing cycles. Internal firmware execution and CPU logic hold-up functions are sustained through a minimum 14 ms holdup time during brief primary DC input voltage dropouts. Primary input power conditioning suppresses inrush current spikes to a maximum of 4 A peak for 100 ms during initial rack power-up sequence.
Frequently Asked Questions
Q: What are the primary output voltage rails supplied by the IC693PWR331 module to the backplane?
A: The module provides three distinct output voltage rails: +5 VDC (up to 30 Watts), +24 VDC Relay (up to 15 Watts), and +24 VDC Isolated power (up to 20 Watts), with total combined load capacity not exceeding 30 Watts.
Q: What is the required DC input operating voltage range for starting and running the unit?
A: The module requires a starting input range of 21 to 56 VDC and maintains continuous operation across a running input range of 18 to 56 VDC.
Q: How does the IC693PWR331 report system power status to the user?
A: Hardware operational status and backplane health are monitored on the front panel via four diagnostic LED indicators: PWR, OK, RUN, and BATT.
Field Installation Guidelines
- Ensure incoming DC power lines are fully de-energized and locked out prior to connecting conductors to the 3 physical terminal screws.
- Align the module card edges with the leftmost power slot guide of the Series 90-30 rack baseplate and push firmly until the backplane connector locks in place.
- Secure the top retaining screw to establish structural chassis grounding and mitigate physical displacement from vibration.
- Connect the primary 24 VDC or 48 VDC supply wiring using proper wire gauges and maintain solid functional earth bonding to eliminate electrical noise.
- Maintain adequate ventilation clearance above and below the baseplate rack chassis to facilitate passive thermal convection cooling.
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