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Phone: +86 16626708626Description
Product Core Brief
- Model: GE IC697CGR772AA
- Brand: GE Fanuc / Emerson Automation
- Series: Series 90-70 PLC
- Core Function: Redundant hot-standby central CPU
- Product Type: Controller/CPU Module
- Key Specs: 96 MHz 80486DX4 CPU; 512 KB battery-backed RAM; SNP comms
- Condition: New Original / New Surplus
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | IC697CGR772AA |
| Manufacturer | GE Fanuc (Emerson Automation) |
| Series | Series 90-70 |
| Module Type | Hot Standby Redundant CPU |
| Processor | Intel 80486DX4 @ 96 MHz |
| User Memory | 512 KB battery-backed CMOS RAM |
| Boolean Execution Time | ~0.4 µs per Boolean |
| Typical Scan Time | ~5.9 ms |
| Discrete I/O Capacity | Up to 2,048 inputs / outputs |
| Analog I/O Capacity | Up to 8,000 points |
| Communication Ports | 1× RS-232, 2× RS-485 (SNP protocol) |
| Protocol Support | GE SNP |
| Redundancy | Hot Standby with bumpless switching |
| Power Requirement | +5 V DC @ ~3.1 A |
| LED Indicators | OK, RUN, EN, P1, P2, P3, MEM Protect |
| Operating Temp | 0 °C to +60 °C (32 °F to 140 °F) |
| Form Factor | Single slot for Series 90-70 rack |
4. Product Introduction
The GE IC697CGR772AA is a hot standby, dual-bus central processing unit (CPU) module for the GE Fanuc Series 90-70 PLC platform. It is engineered for high-availability industrial control systems where continuous process operation matters. The module uses an Intel 80486DX4 microprocessor at 96 MHz and supports deterministic logic execution with fast Boolean times, battery-backed RAM, and SNP communications.
Designed for redundant CPU architectures, this module supports synchronized primary/backup operation, bumpless switching on failure, and large I/O capacity — up to 2,048 discrete I/O and 8,000 analog points. Its compatibility with Genius I/O and IC697 local I/O makes it suitable for complex, large-scale automation environments.
- IC697CGR772AA
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No LEDs after power applied | Loss of +5 V backplane power | ✅ High | Measure +5 V at CPU slot with meter | Check PSU and fuses; verify backplane integrity |
| CPU never enters RUN state | Memory protect switch ON | ⚠️ Medium | Inspect keyswitch position on front panel | Set MEM PROTECT OFF to allow RUN |
| PLC faults on startup | Corrupted battery-backed RAM | ⚠️ Medium | Observe MEM PROTECT and RUN LEDs | Replace battery and reload program |
| Serial comms fail (SNP) | Baud or wiring mismatch | ⚠️ Medium | Test RS-232/RS-485 connections with SNP tool | Correct wiring and SNP settings |
| Redundancy doesn’t switch | Mismatched partner CPU model | ⚠️ High | Compare partner model & firmware | Use identical models (same variant) |
Note: Most symptoms attributed to this CPU are due to loss of backplane power or misconfigured memory protection. Always verify backplane power and LED codes before concluding CPU failure.
6. Frequently Asked Questions (FAQ)
Q1: What kind of controller is the IC697CGR772AA?
A: It’s a hot standby dual bus CPU for the Series 90-70 PLC family, designed for redundancy with bumpless switching between primary and backup CPUs.
Q2: What protocols does it support?
A: The CPU supports GE SNP (Series Network Protocol) over its RS-232 and RS-485 serial ports; it can also coordinate I/O via the genius dual bus.
Q3: How much I/O can this CPU handle?
A: It supports up to 2,048 discrete inputs/outputs and 8,000 analog I/O points when combined with compatible Series 90-70 and Genius I/O modules.
Q4: Can it operate without redundancy?
A: Yes. A hot standby CPU can be configured as a standalone single CPU module, but you’ll lose redundancy benefits.
Q5: What battery does this module use for RAM retention?
A: It uses a replaceable lithium battery (typically model IC697ACC701) to maintain RAM and clock when power is removed. A low battery is usually indicated by the Module OK LED failing to stay ON after power-up.
Q6: Why is this cheaper than current OEM pricing?
A: This part is part of the legacy Series 90-70 platform that’s not in active production. Inventory is mostly New Surplus or Refurbished Tested, hence lower secondary market pricing.
