GE Fanuc IC697CGR772 Series 90-70 Hot Standby CPU Module

Product Description

The IC697CGR772 is a high-reliability Hot Standby CPU designed for the GE Fanuc Series 90-70 PLC platform. It is engineered specifically for redundant control architectures where uninterrupted operation and deterministic performance are mandatory. By operating two synchronized CPUs in an active/standby configuration, the system maintains continuous process control even during hardware failure or maintenance events.

This CPU is powered by an embedded Intel 80486DX4 processor running at 96 MHz and supports full 32-bit floating-point arithmetic. Its dual Genius bus architecture ensures fast, deterministic communication with distributed I/O and enables real-time state synchronization between redundant controllers. With large discrete and analog I/O capacity and fast Boolean execution, IC697CGR772 is well suited for complex, large-scale control systems.

The module integrates seamlessly with Series 90-70 racks, IC697 local I/O, and IC660/IC661 Genius I/O products, making it a proven solution for legacy and long-life industrial installations.

Key Features

• Hot Standby CPU architecture for high-availability control systems

• Dual Genius bus support for redundant I/O communication

• Intel 80486DX4 processor operating at 96 MHz

• 32-bit floating-point computation capability

• Fast Boolean logic execution for deterministic control

• Large discrete and analog I/O addressing capacity

• Single-slot form factor for Series 90-70 PLC racks

Technical Specifications

• Model / Part Number: IC697CGR772

• Product Family: GE Fanuc Series 90-70

• CPU Type: Intel 80486DX4 microprocessor

• Clock Speed: 96 MHz

• Arithmetic: 32-bit floating-point supported

• User Memory: 512 KB CMOS RAM

• Boolean Execution Time: 0.4 µs per Boolean function

• Typical Scan Time: Approximately 5.9 ms

• Discrete I/O Capacity:

• Inputs: up to 2048

• Outputs: up to 2048

• Analog I/O Capacity: up to 8000 points

• Communication Interfaces:

• 1 × RS-232 (programming / SNP)

• 2 × RS-485 (system and redundancy communication)

• Supported Protocols: SNP

• Redundancy Mode: Hot Standby with automatic or manual switchover

• Operating Voltage: 5 V DC

• Typical Current Consumption: approx. 3.1 A

• Status Indicators: Module OK, RUN, EN, P1, P2, P3, MEM Protect

• Backup Battery: IC697ACC771 lithium battery

• Operating Temperature Range: 0 °C to 50 °C

• Weight: 1.7 lbs

• Installation: Single-slot mounting in Series 90-70 rack

Typical Applications

• Power generation and turbine control systems

• Petrochemical and refinery process automation

• Steel, cement, and heavy manufacturing plants

• Large PLC systems requiring continuous operation and redundancy

FAQ

Q: Is the IC697CGR772 intended for non-redundant systems?
A: While it can operate as a standalone CPU, this model is specifically optimized for Hot Standby redundancy applications.

Q: Can different CPU models be mixed in a redundant pair?
A: For reliable synchronization and failover, both CPUs should be identical models with matching firmware revisions.

Q: Are additional modules required for redundancy operation?
A: Yes. A complete Hot Standby system requires appropriate redundancy communication and synchronization hardware.