IC695CRU320-BA GE Fanuc

IC695CRU320-BA GE Fanuc Input module

Brand：General Electric Model number：IC695CRU320-BA

Country of origin: U.S. Product weight：0.55kg

HS code：8517623990

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Product Details：

Product Dimensions：

The IC695CRU320-BA is a central processing unit based on the Intel Celeron M processor, operating at $1 \text{ GHz}$ . As part of the RX3i family, it utilizes a PCI-based backplane for high-speed data throughput. The "CRU" designation identifies it as a Redundant CPU, meaning it is specifically designed to work in a pair. In a standard setup, two of these CPUs reside in separate racks; one acts as the "Primary" controller while the other stays in "Secondary" or "Backup" mode, ready to take control within milliseconds if the primary unit fails. It features $64 \text{ MB}$ of user memory and supports a wide range of I/O types and communication modules.

Product Parameters

Processor Type: Intel Celeron M $1 \text{ GHz}$
User Memory: $64 \text{ MB}$ of battery-backed RAM and $64 \text{ MB}$ of non-volatile Flash memory
Power Requirements: Consumes $1.25 \text{ A}$ at $5 \text{ VDC}$ and $1.0 \text{ A}$ at $3.3 \text{ VDC}$ from the backplane
Redundancy Support: Hot Standby Redundancy using dedicated fiber-optic synchronization links
Communication Ports: Two serial ports (RS-232 and RS-485) and support for Ethernet via rack-mounted modules
Input/Output Capacity: Supports up to 32k bits of discrete I/O and 32k words of analog I/O
Programming Languages: Supports Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST), and C programming
Operating Temperature: $0\text{°C}$ to $60\text{°C}$ ( $32\text{°F}$ to $140\text{°F}$ )
Real-Time Clock Accuracy: $\pm 2$ seconds per day at $25\text{°C}$

Product Advantages

A primary advantage of the IC695CRU320-BA is its Seamless Switchover capability. In the event of a hardware fault or power loss on the primary rack, the secondary CPU takes over the control task with virtually zero interruption to the process outputs. This is facilitated by the High-Speed Synchronization via fiber-optic cables, ensuring that the memory of both CPUs is identical at the start of every scan cycle.

The Open Architecture of the RX3i platform allows this CPU to integrate easily with third-party devices and older Series 90-30 I/O modules, protecting existing investments. Additionally, the Advanced Diagnostics integrated into the CPU allow maintenance teams to pinpoint faults in the redundancy link or individual I/O modules through the Proficy Machine Edition software interface.

Important Considerations and Precautions

When deploying the IC695CRU320-BA, it is critical to ensure that the Firmware Versions on both the Primary and Secondary CPUs are identical; mismatched firmware can prevent the redundancy link from synchronizing. The Lithium Battery (IC693ACC302) must be checked regularly, as it preserves the user program and data during power outages.

Special care must be taken with the Fiber Optic Sync Links (RMX modules); the cables must not exceed their minimum bend radius to avoid signal attenuation which could lead to a "loss of redundancy" alarm. Furthermore, when performing a Hot Download (changing code while the machine is running), it is safer to perform the update on the Secondary unit first to verify stability before switching it to Primary. Finally, ensure the Grounding Bar on the RX3i rack is properly bonded to the cabinet earth to prevent EMI from affecting the high-speed PCI bus communications.

Product Applications

The IC695CRU320-BA is the preferred choice for industries where a process interruption results in significant financial loss or safety hazards.

Oil and Gas: Controlling offshore drilling platforms and pipeline pumping stations where remote operation and 24/7 uptime are mandatory.
Power Generation: Managing turbine control and grid synchronization in thermal or hydroelectric power plants.
Water Treatment: Supervising large-scale municipal water distribution and wastewater treatment facilities.
Chemical Processing: Monitoring exothermic reactions where a loss of control could lead to catastrophic equipment failure.
Transportation: Controlling tunnel ventilation systems and signaling for high-speed rail networks.

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