Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | GE Fanuc / Emerson |
| Model Number | IC693CPU374 |
| Series | Series 90-30 |
| Product Type | CPU module |
| Processor Speed | 133 MHz |
| Processor Type | Embedded 586 / AMD SC520 class |
| User Memory | 240 KB configurable |
| I/O Capacity | Up to 4,096 discrete I/O points, 8 racks |
| Ethernet | Two 10/100Base-T/TX ports with built-in switch |
| Serial Ports | None built-in; RS-485 via power supply |
| Power Draw | 7.4 W at 5 V DC |
| Operating Temperature | 0°C to 60°C; LT version supports -40°C to 60°C |
Product Introduction & Supply Chain Strategy
GE IC693CPU374 is a Series 90-30 CPU module used to run PLC logic, handle embedded Ethernet communication, and manage distributed I/O in industrial control systems. It fits legacy plants that need a compact controller with dual Ethernet networking and fixed rack architecture.
Buying it as New Surplus is a practical TCO decision because this is a legacy controller with finite supply and real outage risk if it fails unexpectedly. For a part like this, buffer stock and vendor consolidation usually cost less than waiting through lead time variability during a shutdown event.
Installation & Configuration Guide
Stage 1: Pre-Installation
Apply lock-out/tag-out and confirm the cabinet is de-energized. Use an ESD strap, insulated tools, and a camera. Photograph all wiring, rack positions, and network connections before removal.
Stage 2: Removal
Disconnect all field wiring and Ethernet cables carefully, labeling each one. Remove the CPU straight from the baseplate to avoid bent pins or edge connector damage. Keep the old module until the replacement boots and communicates correctly.
Stage 3: Installation
Match the original wiring and rack position exactly. Seat the CPU fully and confirm proper connector engagement. Reconnect network and I/O wiring, then verify that any backup battery or retention device is in place.
Stage 4: Power-On & Testing
Check the 5 V rail and ensure there are no shorts before energizing. Verify that the CPU starts normally, the Ethernet links come up, and the controller sees the expected rack and I/O count. Confirm the logic image and communication settings before returning the system to service.
- IC693CPU374
- IC693CPU374
Firmware/Software Versions & Upgrade Notes
Document the installed CPU revision and site program before any swap. This platform is typically programmed with VersaPro, and control software compatibility should be checked before changing the hardware image.
Avoid firmware upgrades or downgrades during a routine replacement unless you have a tested reason and a rollback plan. Mismatched revision behavior can affect Ethernet protocols, backup memory behavior, and site logic validation.
Frequently Asked Questions
Is this really new? The correct procurement position is New Surplus / Original New, not refurbished or repaired.
Why is it cheaper than OEM new but more expensive than refurb stock? New Surplus comes from controlled excess inventory, so it costs less than factory list pricing while avoiding the risk of uncertain-condition replacement units.
Is this part obsolete or EOL? Yes, treat it as a strategic legacy spare. That means buffer stock, vendor consolidation, and last-time-buy planning are appropriate.
Can I hot-swap it? Do not assume hot-swap is safe. Isolate the rack and replace it only under a controlled maintenance procedure.
Will the program stay in the module? The CPU supports memory retention, but you should still archive the program and verify the restored image after installation.
What warranty terms make sense? For New Surplus PLC CPUs, warranty should be tied to traceability, outbound testing, and condition verification. The real value is avoiding a stock-out on a critical controller.
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