GE IC698RMX016 VMIVME-5567-100

The GE IC698RMX016 is a high-performance, fully redundant Central Processing Unit (CPU) module for the GE Fanuc PACSystems RX7i platform, also known by its alternative/legacy designation VMIVME-5567-100. This module represents the heart of a fault-tolerant control system, utilizing a triple modular redundant (TMR) architecture where three separate processors execute the same logic in parallel. The GE IC698RMX016 performs a 2-out-of-3 (2oo3) hardware vote on every I/O point and communication transaction, ensuring continuous, error-free operation even in the event of a single hardware fault.

Product Parameters

• Manufacturer / Brand: GE (GE Vernova).
• Primary Model: IC698RMX016 (PACSystems RX7i designation).
• Alternative Model: VMIVME-5567-100 (VME bus-based industrial computing designation).
• Architecture: Triple Modular Redundant (TMR) CPU.
• Processor: Utilizes three independent, synchronized microprocessors.
• Memory: Equipped with substantial user logic and data memory to support complex control applications.
• Communication Ports: Includes multiple ports for programming, peer-to-peer communication (Global Data), and network connectivity (e.g., Ethernet).
• I/O Compatibility: Designed to work with the RX7i’s Genius and VME I/O systems, managing communication with distributed and local I/O blocks.
• Voting Mechanism: Performs continuous hardware-based voting on all inputs, outputs, and internal data across the three channels.
• Diagnostics: Provides extensive diagnostic information on the health of each of the three channels and the overall system.
• Form Factor: A multi-slot VME card designed for installation in the primary slot of an RX7i redundant chassis.

Advantages and Features

• Ultra-High Availability: The TMR architecture allows the system to suffer a fault in any one of the three channels and continue operating without interruption, enabling online repair.
• Fault Tolerance: Eliminates single points of failure within the controller itself, providing a level of hardware integrity suitable for safety and critical control applications.
• Deterministic Performance: Offers predictable and repeatable scan times, which is crucial for time-sensitive process control.
• Seamless Migration: Provides a high-availability upgrade path for users of existing GE Series 90-70 systems, protecting software investment.
• Comprehensive System Diagnostics: Detailed fault reporting and channel status monitoring allow for rapid identification and isolation of issues, simplifying maintenance.

Application Cases in Industry

• Oil & Gas Pipelines: Serves as the main controller for Supervisory Control and Data Acquisition (SCADA) and Safety Instrumented Systems (SIS) at compressor stations, where continuous operation is critical for throughput and safety.
• Power Generation (Thermal): Used in burner management systems (BMS) and turbine control for coal or gas-fired plants, where a controller failure could lead to a forced outage or safety incident.
• Chemical Processing: Controls complex, continuous processes like catalytic cracking or ethylene production, where a shutdown results in massive production loss and costly restart procedures.
• Water/Wastewater Management: Manages large, regional water treatment and distribution networks where system failure could impact public health and safety.
• Metals Production: Controls critical processes in steel mills, such as blast furnace operations or continuous casting, where process interruption leads to significant equipment damage and product loss.

Comparison with Competing Products

The primary competitors are other high-availability and fault-tolerant controllers, such as the Emerson Ovation OCT (based on 1oo2D architecture) and the Triconex Tricon (TMR system). The GE IC698RMX016 distinguishes itself through its integration within the RX7i PLC platform, offering a familiar programming environment (Proficy Machine Edition) for engineers used to GE systems. Compared to a simplex PLC (like a standard RX3i or ControlLogix), the IC698RMX016 provides intrinsic hardware redundancy at a significantly higher cost and complexity. Its main advantage over some competing TMR systems is its ability to leverage the extensive existing library of GE Series 90-70 I/O and programming logic.

Selection Suggestions and Precautions

• Selection Suggestions:
  1. Select the GE IC698RMX016 for applications demanding the highest possible availability (e.g., >99.999%) and where the consequences of a controller-initiated process shutdown are severe (safety, massive financial loss).
  2. Consider the total system cost, which includes the redundant chassis, specialized power supplies, and TMR-compatible I/O networks (Genius), not just the CPU module itself.
  3. Ensure your engineering team has or obtains specific training on the configuration, programming, and maintenance of TMR systems, as they are more complex than standard PLCs.
• Precautions:
  1. System Complexity: A TMR system is not three PLCs in one; it is a specialized architecture. Design, implementation, and troubleshooting require a deep understanding of redundancy concepts and GE’s specific implementation.
  2. Synchronization: The three channels must remain tightly synchronized. Any issue with the synchronization links or clocks can cause the system to fault.
  3. Configuration Management: The application logic and hardware configuration must be meticulously managed and identical across all three channels. Special software tools are used for this.
  4. Specialized I/O: To achieve full fault tolerance, the system must use I/O networks capable of redundancy, such as the Genius bus with redundant cabling. Not all I/O is compatible.
  5. Lifecycle Support: As a high-end, mature product, ensure a clear plan for long-term support, spare parts, and firmware management. Source the GE IC698RMX016 and its associated components from authorized GE channels. The alternative designation VMIVME-5567-100 is crucial for identifying compatible legacy components or documentation.