GE Fanuc IC695CRU320 PACSystems RX3i CPU Module

The GE Fanuc IC695CRU320 is a hot‑standby redundancy processor module for PACSystems RX3i automation control platforms. Designed for high‑availability industrial control scenarios, it works in pairs to implement fault‑tolerant control logic, performing seamless master‑standby switchover within milliseconds to avoid production shutdown caused by single‑point CPU failures for critical industrial processes.

This rack‑mount CPU module adopts 1GHz Celeron‑M processor, equipped with 64MB battery‑backed RAM and 64MB non‑volatile flash memory, and provides dual RS232/RS485 serial communication ports. Original production has been discontinued. It is widely supplied as aftermarket spare parts for power plants, petrochemical plants and oil‑gas automation cabinet maintenance and high‑reliability control‑system retrofitting projects.

Main Specifications

1. Brand:GE Fanuc; Model:IC695CRU320; Type:Hot‑Standby Redundancy CPU Processor Module
2. Applicable Platform:GE PACSystems RX3i control system chassis, matched with redundancy memory‑exchange module
3. Processor:1GHz Celeron‑M central processing unit
4. Memory Resource:64 MB battery‑backed RAM, 64 MB non‑volatile flash user memory
5. Communication Interface:Dual DB9 serial ports, support RS232 / RS485, Modbus RTU, SNP protocols
6. Redundancy Performance:Hot‑standby switchover, minimum switch‑over time 3.133 milliseconds
7. Supply Status:Original production discontinued, available as tested surplus or refurbished spare parts

Core Functions

1. Execute real‑time industrial control logic, support ladder diagram, structured text, function‑block and C programming languages.
2. Complete hot‑standby redundancy operation in pairs, realizing bumpless master‑standby switchover upon main CPU failure.
3. Realize cyclic data synchronization between primary and standby CPU through supporting redundancy memory‑exchange modules.
4. Carry out serial communication with HMI, programming host and field intelligent devices via dual built‑in serial interfaces.
5. Support dual backplane bus, compatible with RX3i series I/O and legacy Series‑90‑30 I/O expansion modules.
6. Provide multi‑LED status indicators for CPU running state, fault diagnosis and on‑site rapid troubleshooting guidance.

Application Scenarios

1. Power‑generation units, petrochemical plants, oil‑gas refineries and other high‑reliability critical‑process industrial sites.
2. Spare redundancy CPU replacement and routine maintenance of existing GE PACSystems RX3i control cabinets.
3. Technical renovation and high‑availability upgrade of aging fault‑tolerant industrial automation control systems.
4. On‑site troubleshooting and replacement of faulty redundancy processor modules on non‑stop production units.
5. Spare‑parts stocking for system integrators and industrial‑automation professional maintenance contractors.
6. Global aftermarket spare supply for technicians maintaining obsolete GE PACSystems RX3i legacy control hardware.

FAQ

1. Q:Can IC695CRU320 run as a single standalone CPU?
   A:It is designed for hot‑standby redundancy system; standalone operation is not supported, it must work paired with another IC695CRU320.
2. Q:What auxiliary hardware is required for redundancy configuration?
   A:Redundancy memory‑exchange module IC695RMX128 or IC695RMX228 is required for data synchronization between primary and standby CPUs.

3. Q:Is this redundancy CPU module still in original production?
   A:GE Fanuc original manufacturing has been discontinued, only tested surplus and refurbished spare units are available.