16MB SDRAM IC698RMX016CA GE Redundancy Module New

Product Overview

The GE Fanuc IC698RMX016CA functions as the high-speed synchronization backbone for PACSystems RX7i redundant CPU architectures. This 100% Brand New original module facilitates real-time memory mirroring between primary and secondary controllers. Equipped with 16 MB of ECC-protected SDRAM and dual fiber optic ports, it ensures that both CPUs maintain identical process states. This hardware-driven synchronization allows for bumpless failover, making it a critical component for mission-critical applications where downtime results in significant safety risks or production losses.

Technical Specifications

Engineering Advantages

• Deterministic Synchronization: The IC698RMX016CA utilizes dedicated fiber optic links to transfer data between CPUs, bypassing the standard backplane traffic. This ensures that memory exchange remains deterministic and does not impact the sweep time of the application logic.

• Single-Bit Error Mitigation: The integrated ECC (Error Correction Code) controller automatically detects and corrects single-bit memory errors. This preventive feature stops corrupted data from propagating through the redundant system, maintaining high data integrity in electrically noisy environments.

• Fiber Optic Isolation: The use of LC-type fiber optic cables provides total galvanic isolation between the redundant racks. This protects the CPUs from ground loops and electromagnetic interference (EMI), which is essential for stable operation in petrochemical and power generation facilities.

• High-Speed Failover Logic: Integrated LED indicators and a role switch allow for immediate visual diagnostics of the redundancy status. The module handles the role-switching logic autonomously, ensuring that the secondary CPU assumes control within milliseconds of a primary fault detection.

FAQs

• Q: Does the IC698RMX016CA work with the PACSystems RX3i platform?

• A: No. GE designed this module specifically for the PACSystems RX7i rack architecture. The physical dimensions and backplane pinouts prevent its use in RX3i or other legacy GE platforms.

• Q: What type of fiber optic cables should I use for connection?

• A: Use standard fiber optic cables with LC-type connectors (compliant with IEC 61754-20). Ensure that the return loss remains at -30 dB or better to maintain the high-speed data transfer rates required for memory sync.

• Q: Why does the module draw 1.8 A from the backplane?

• A: The high current requirement supports the high-speed SDRAM operations and the powerful ECC controllers necessary for real-time memory exchange. Verify that your RX7i power supply has sufficient headroom to support this load alongside other modules.

• Q: How does the ECC feature improve system reliability?

• A: In industrial settings, cosmic rays or EMI can occasionally flip a bit in RAM. The ECC controller identifies these errors and corrects them on the fly, preventing a system crash or incorrect process command that could occur with non-ECC memory.