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The GE IC697CGR935, also cataloged as the IC697CGR935 Redundancy CPU Controller Module, operates as a dedicated hardware component for high-availability redundant system control and hot-standby processing within Series 90-70 backplane platforms.

Hardware Specifications

Parameter Specification
Model IC697CGR935
Brand GE Fanuc / Emerson Automation
Origin USA
Weight 0.77 kg (1.69 lbs)
Dimensions Single-slot Series 90-70 module format
Operating Temp 0 to 60 deg C (with forced air); 0 to 50 deg C (still air)
Power Consumption 15.5 W (3.1 A @ 5 VDC backplane bus)
Microprocessor 96 MHz 80486DX4
Execution Speed 0.4 microseconds per Boolean instruction
Integrated Memory 1 MB CMOS RAM (battery-backed)
Discrete I/O Capacity 12K inputs and 12K outputs (any mix)
Analog I/O Capacity Up to 8K analog I/O points
Serial Interfaces 3 ports: Port 1 (RS-232), Port 2 (RS-485 isolated), Port 3 (RS-485 non-isolated)
Serial Protocols SNP Slave only
Memory Battery IC697ACC701 Lithium battery (6 months retention without power)

Backplane Bus Communication Velocity & Redundant Execution

The CPU executes high-speed memory synchronization across primary and secondary pairs to ensure continuous operation across the backplane bus. Backplane bus communication velocity supports bumpless transfer of control within single scan cycles upon primary CPU failure. Firmware flash compatibility and Machine Edition configuration maintain deterministic logic execution and I/O density scaling up to 12K discrete and 8K analog channels.

Frequently Asked Questions

Q: What are the backplane current requirements for the IC697CGR935 processor module? A: The module requires 3.1 A from the internal +5 VDC backplane power supply rail.

Q: What is the maximum memory retention time provided by the backup battery? A: Using the compatible IC697ACC701 lithium battery pack, memory contents are retained in CMOS RAM for up to 6 months without external power applied.

Q: What operating temperature limits apply to forced-air versus natural convection environments? A: The processor is rated for 0 to 50 deg C in natural convection environments and 0 to 60 deg C when forced-air cooling is utilized.

Field Installation Guidelines

  • Module Installation: Power down the Series 90-70 rack before inserting the CPU into slot 1 of the primary baseplate. Press firmly until the rear backplane edge connectors are fully engaged.
  • Battery Setup: Connect the IC697ACC701 lithium battery connector to the CPU front panel jack before applying backplane power to preserve configuration memory.
  • Serial Cable Shielding: Terminate RS-485/RS-232 communication cable shields directly to the cabinet ground bar to prevent signal distortion on the serial interfaces.
  • Airflow Clearance: Maintain a minimum 2-inch clearance above and below the rack enclosure to facilitate natural convection, or install a fan tray if ambient operating temperatures exceed 50 deg C.

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