GE Fanuc IC695CRU320 CPU Processors PACSystems RX3i

The GE Fanuc IC695CRU320, also cataloged as the IC695CRU320 Redundant CPU Module, operates as a dedicated hardware component for real-time control logic execution and hot-standby synchronization within PACSystems RX3i controller assemblies.

Hardware Specifications

Deterministic Network Routing and Firmware Flash Compatibility

The hardware architecture incorporates embedded communication layers supporting Profinet / EtherNet/IP deterministic networks, enabling synchronous input/output module scanning across local and distributed chassis structures. The CPU card communicates directly via the dual-bus PACSystems RX3i backplane, which leverages high-speed PCI tracks alongside serial interfaces to increase internal backplane bus communication velocity. The integrated synchronization engine controls bumpless failover parameters between primary and secondary controller states by matching localized memory registers dynamically. All system memory configurations maintain full firmware flash compatibility, allowing deterministic application block revisions without causing timing variations across adjacent expanded I/O density scaling profiles.

Frequently Asked Questions

Q: What are the restrictive parameters surrounding hot-swap replacement for the IC695CRU320 CPU?

A: The IC695CRU320 processing unit does not support online extraction or insertion (hot-swapping) while the chassis backplane bus is energized. Power to the rack assembly must be completely isolated before removing or installing the card to prevent damaging the low-voltage logic paths.

Q: How is the primary-to-secondary database synchronization executed to avoid scan-time extensions?

A: Synchronization is performed through dedicated high-speed fiber optic link modules installed alongside the CPU. The system copies updated logic registers and variable states at specific transfer intervals during each execution loop, ensuring the backup unit can assume full control within a single scan window if the primary module encounters a fault condition.

Field Installation Guidelines

• Insert the primary and redundant CPU processors into identical slot configurations within separate RX3i universal backplane chassis units, ensuring the mechanical locking tabs lock into place against the rack casing.
• Terminate a low-impedance copper ground strap from the primary RX3i chassis earth terminal lug directly to the central panel cabinet subplate to shield logic tracks from electromagnetic distortion.
• Maintain a minimum physical spacing gap of 102 mm at the top and bottom borders of the module chassis to allow non-obstructed passive convective air flow through the ventilation slots.
• Connect the external synchronization ports using factory-certified multi-mode fiber optic cables, verifying that the dynamic bending radius of the fiber lines does not drop below 30 mm inside the wire ducting.