Description
Key Technical Specifications
- Slots: 5 total (supports CPU and I/O modules)
- Module Type: Modular CPU Baseplate
- Dimensions: 10.43 x 5.12 x 5.59 in (W x H x D)
- Internal Power Consumption: 270 mA at 5 VDC
- Mounting: Panel or DIN rail
- Backplane: Supports Series 90-30 CPU and I/O modules
- Expansion: Can be used as main base with CPU installed
- Operating Temperature: 0°C to +60°C (standard for series)
- Connectors: Standard Series 90-30 backplane connectors
Product Introduction
The GE IC693CHS397 is a 5-slot modular CPU baseplate for the Series 90-30 PLC system. It provides the backplane and power distribution for one CPU module and up to four additional I/O or specialty modules in a compact footprint.
This baseplate is commonly used for small to medium control applications and as a replacement part in existing Series 90-30 installations. It delivers reliable performance in machine and process control environments.
- IC693CHS397
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No power to modules | Faulty base backplane | ✅ High | Measure 5VDC and 24VDC at module pins | Replace baseplate |
| Modules not recognized | Bad backplane connectors | ✅ High | Visual inspection for bent pins | Clean or replace IC693CHS397 |
| Intermittent operation | Loose mounting or vibration | ✅ Medium | Check all module seating and base screws | Secure base and reseat modules |
| CPU fault light on | Base power distribution issue | ✅ Medium | Test with known good CPU | Swap base if issue follows |
| Expansion rack comms fail | Base configuration mismatch | ❌ Low | Verify dip switches and addressing | Check CPU and expansion settings |
Take clear photos of the baseplate and installed modules if you continue to have issues after basic power and seating checks.
Frequently Asked Questions (FAQ)
Is the IC693CHS397 new original? Yes, supplied as New Original / New Surplus from GE Fanuc inventory with traceability.
How many modules can this baseplate hold? Five slots total. Typically one slot for the CPU and the remaining four for I/O or communications modules.
Is this baseplate expandable? Yes. You can add remote I/O racks using the appropriate expansion modules and cables.
Do I need a separate power supply? Yes. The baseplate requires a compatible Series 90-30 power supply module installed in the designated slot.
Can I use this as a remote I/O base? It is primarily a CPU base. For remote I/O, consider dedicated expansion baseplates like the IC693CHS398.
What is the power consumption of the empty base? Approximately 270 mA at 5 VDC for the baseplate itself.
What warranty applies? 1-year warranty on functional performance. We test each baseplate for proper backplane operation before shipping.


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