GE IC697CPX928-CD

Description

Product Parameters and Specifications

The IC697CPX928-CD is engineered with precise technical specifications for redundant control applications:

• Manufacturer: GE Fanuc Automation (now Emerson)

• Series: Series 90-70 Programmable Logic Controller

• Part Number: GE IC697CPX928-CD

• Product Type: Redundant CPU Module / Hot-Standby Processor

• Processor: High-performance 32-bit microprocessor (specific type varies by revision)

• Memory Configuration:

  • Program memory: Extensive battery-backed RAM for control logic storage

  • Configuration memory: Non-volatile memory for system parameters

  • Register memory: Large capacity for data handling

  • Typical total memory: Multiple megabytes (specific capacity varies by firmware)

• Redundancy Features:

  • Automatic failover detection and transfer

  • Synchronized program execution between paired CPUs

  • Proprietary high-speed synchronization link between redundant pairs

  • Bumpless transfer capability for process stability

• Communication Ports:

  • Built-in serial ports for programming and operator interface

  • Ethernet interface for network connectivity (depending on variant)

  • Genius bus controller interface for I/O communication

  • Redundancy link port for inter-CPU synchronization

• I/O Capacity: Supports extensive local and remote I/O through Genius bus and other networks

• Scan Rate: Fast logic execution suitable for demanding control applications

• LED Indicators:

  • RUN (processor active)

  • PRIMARY (active controller status)

  • BACKUP (standby controller status)

  • FAULT (processor or system fault)

  • I/O status indicators

  • Battery status

  • Communication activity

• Battery: Lithium battery for memory backup (typical life 2-3 years)

• Mounting: Designed for Series 90-70 rack mounting

• Environmental Rating: Industrial grade for operation in harsh environments (0-60°C, 5-95% humidity non-condensing)

• Diagnostics: Comprehensive self-diagnostic capabilities with fault logging

Advantages and Features

The GE IC697CPX928-CD offers a comprehensive set of features that make it the preferred solution for critical control applications:

• True Redundant Operation: Unlike simpler systems that require manual switchover, the IC697CPX928-CD provides automatic, bumpless failover. When paired with a second identical unit, the redundant pair continuously synchronizes program execution and I/O status, ensuring the backup is ready to assume control instantly without process disturbance.

• High-Speed Synchronization: A dedicated high-speed communication link between redundant CPU pairs ensures that the GE IC697CPX928-CD backup processor maintains exact program state matching the primary. This synchronization occurs within each scan cycle, minimizing any data mismatch during failover.

• Transparent Failover: In the event of primary CPU failure, power loss, or communication interruption, the backup IC697CPX928-CD assumes control automatically without requiring operator intervention. The transition is transparent to the controlled process, maintaining production continuity.

• Hot Replacement Capability: Failed CPUs can be replaced while the system remains operational. The new GE IC697CPX928-CD automatically synchronizes with the active controller and assumes backup status, allowing complete recovery without system shutdown.

• Comprehensive Diagnostic Coverage: Continuous self-monitoring detects processor errors, memory faults, communication problems, and synchronization issues. The IC697CPX928-CD provides detailed diagnostic information accessible through programming software and front-panel LEDs.

• Battery-Backed Memory Protection: Ensures that critical programs and data are retained during power outages, allowing automatic resumption of control without program reloading when power returns.

• Extensive I/O Support: The GE IC697CPX928-CD communicates with local and remote I/O through Genius bus and other networks, supporting the full range of Series 90-70 I/O modules for maximum application flexibility.

• Legacy System Integration: Designed for compatibility with existing Series 90-70 installations, the IC697CPX928-CD enables upgrades to redundant operation without replacing existing I/O or wiring, protecting prior capital investments.

Application Fields and Cases

The GE IC697CPX928-CD is deployed across numerous industries requiring maximum system availability:

• Continuous Process Industries: Used extensively in chemical plants, refineries, and petrochemical facilities where production interruptions cause significant financial losses and process upsets. The IC697CPX928-CD ensures that critical control loops for reactors, distillation columns, and cracking units remain operational even if a processor fails. A typical ethylene plant may use multiple GE IC697CPX928-CD redundant pairs to protect different process units.

• Power Generation: Applied in thermal power plants, combined-cycle facilities, and cogeneration plants where turbine control and balance-of-plant automation require maximum reliability. The IC697CPX928-CD provides the availability necessary for grid-connected generation where unplanned outages carry substantial penalties.

• Pipeline Control: Employed in oil and gas pipeline facilities where pumping stations must operate continuously. The GE IC697CPX928-CD ensures that pipeline pressure control and leak detection systems remain functional even during processor maintenance or failure events.

• Water and Wastewater Treatment: Used in large municipal treatment facilities where continuous operation is essential for environmental compliance. The IC697CPX928-CD protects critical processes including disinfection, filtration, and pumping stations from control system failures.

• Mining and Minerals Processing: Applied in concentrators, smelters, and refining operations where material flows must continue uninterrupted. The IC697CPX928-CD provides the reliability required for around-the-clock mining operations.

Comparison with Competing Products

When evaluated against alternative redundant control solutions, the GE IC697CPX928-CD demonstrates distinct advantages:

• vs. Allen-Bradley ControlLogix Redundancy: Rockwell’s ControlLogix platform offers excellent redundancy, but the IC697CPX928-CD provides a more cost-effective solution for facilities already invested in Series 90-70 hardware. The GE solution also offers simpler integration with existing Genius I/O networks common in many process facilities.

• vs. Siemens S7-400H Redundancy: Siemens’ S7-400H is a powerful redundant platform, but the GE IC697CPX928-CD benefits from the extensive installed base of Series 90-70 systems and the familiarity of GE programming environments for many process industry engineers. The IC697CPX928-CD also offers more straightforward migration paths for existing GE installations.

• vs. Schneider Electric Quantum Hot Standby: Schneider’s Quantum platform provides capable redundancy, but the GE IC697CPX928-CD often provides better integration with GE drives and instrumentation common in certain industries. For facilities with significant GE equipment, the IC697CPX928-CD simplifies system architecture and maintenance.

Selection Suggestions and Precautions

When considering the GE IC697CPX928-CD for your application, keep these critical factors in mind:

• Redundant Pair Matching: For proper redundant operation, both CPUs in a redundant pair must be identical models with matching firmware revisions. Verify that the IC697CPX928-CD you acquire can be matched with an existing or new partner CPU with compatible firmware.

• Firmware Compatibility: Different firmware revisions may have different features, performance characteristics, or compatibility with other system components. Verify that the GE IC697CPX928-CD firmware revision supports your application requirements and is compatible with your programming software version.

• Memory Capacity Verification: Different IC697CPX928-CD variants may have different memory capacities. Ensure the module you acquire has sufficient program and data memory for your application, considering both current requirements and potential future expansions.

• Battery Status Check: The IC697CPX928-CD relies on an internal battery to maintain program memory. When acquiring a replacement or spare unit, verify battery status and replace if necessary before commissioning to avoid program loss during power-down.

• Program Backup Requirement: Before replacing an existing CPU, always upload and save the current program. Having a verified backup ensures you can restore operation quickly on the replacement GE IC697CPX928-CD without reprogramming from scratch.

• Redundancy Configuration: Proper redundant operation requires correct configuration of both hardware (switches, jumpers) and software (redundancy parameters). Document all settings before removing an existing unit and verify configuration on replacement.

• Rack Compatibility: Confirm that the IC697CPX928-CD is compatible with your specific Series 90-70 rack model. Different racks may have different backplane characteristics or power distribution capabilities.

• Environmental Considerations: While robust, ensure the installation environment meets specifications for temperature and humidity. The GE IC697CPX928-CD requires adequate ventilation within the enclosure to maintain reliable operation.

• Synchronization Link Integrity: The high-speed synchronization link between redundant CPUs requires proper cabling and termination. Verify that all synchronization cables are in good condition and properly connected during installation.

• Source from Reputable Suppliers: Given the critical nature of redundant control systems and the potential for counterfeit or improperly tested components, sourcing from a trusted vendor like AxControl is essential. They can provide verified, tested GE IC697CPX928-CD units with appropriate warranties and technical support to ensure reliable operation in your application.

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