GE Fanuc IC697CGR935 Series 90-70 Redundancy CPU Controller

Product Overview

The IC697CGR935 is a high-availability, single-slot redundancy CPU controller developed by GE Fanuc for the legacy Series 90-70 automation platform. Weighing just 0.7 kg, this compact PLC processor provides rapid data execution and synchronized backup control loop management. It is engineered specifically for mission-critical industrial applications where unexpected system downtime poses severe operational risks, such as water treatment, continuous chemical processing, and power generation distribution.

Core Technical Advantages

• Dual-Bus Hardware Redundancy: Provides seamless failover tracking to a backup processor unit without interrupting the active input/output scanning cycles.
• High-Speed Processing Memory: Features 1 MB of non-volatile CMOS RAM to handle comprehensive register storage, complex mathematical algorithms, and large user logic programs.
• Multi-Port Connectivity: Integrates 2 dedicated communication ports via standard RJ-45 physical interfaces, expanding networking options for local programming and remote supervisory data acquisition.

Technical Specifications

Installation & Maintenance

• Backplane Power Budgeting: Ensure the main chassis power supply has at least 3.1 A of continuous current headroom on the 5V rail to host this module safely alongside standard I/O hardware.
• Slot Placement Rules: Slide the module into slot 1 of the primary Series 90-70 rack framework. Ensure the guide rails match tightly before applying firm pressure to seat the backplane connectors.
• Lithium Battery Schedule: Replace the auxiliary CMOS backup battery during annual plant turnarounds to preserve internal automation code and configuration settings over temporary cold shutdowns.

Engineering Advantages

• Deterministic Failover Execution: Synchronizes status tables between primary and secondary controller racks across dedicated links to guarantee a zero-bump system transfer.
• Vibration Resistant Structure: The lightweight 0.7 kg plastic and metal casing relies on secure mechanical lock pins to survive continuous low-frequency cabinet shaking.
• Standard RJ-45 Framework: Replaces specialized serial connectors with ubiquitous industrial RJ-45 network points, lowering the total engineering cost for communication cables.

Technical FAQs

Q1: Does the IC697CGR935 controller require an external memory board?
A1: No. The unit contains an embedded, onboard 1 MB CMOS RAM layout that meets standard logic program requirements without needing secondary expansion modules.

Q2: Can I mount this Series 90-70 controller directly inside a standard Series 90-30 rack?
A2: No. This module is physically sized for the larger Series 90-70 backplane format. However, it can establish network links to read and write control data from downstream Series 90-30 I/O blocks over network bridges.

Q3: What causes a module power fault if the input source is steady?
A3: This CPU draws a heavy 3.1 A load from the internal backplane. If multiple high-load modules are grouped in the same rack, the power supply can overload, causing a localized drop in voltage that triggers defensive CPU shutdowns.