GE IS200EROCH1ABB – Emergency Relay Output Board

The GE IS200EROCH1ABB is a specialized output board designed for use within the Mark VI turbine control system. It functions as an Emergency Relay Output (ERO) module, providing a reliable interface between the control processor and external devices that require rapid and secure shutdown or protection signals.

Role in the Control System

Within a turbine or generator protection framework, the IS200EROCH1ABB serves as the safety-critical output channel. When abnormal conditions are detected—such as overspeed, overtemperature, or system trips—the board transmits immediate relay signals to actuators, breakers, or shutdown mechanisms. This ensures that hazardous situations are mitigated without delay.

Features

• Fail-Safe Design – Built to trigger emergency outputs even in case of system faults.

• High-Speed Relay Response – Delivers millisecond-level actuation for critical shutdown commands.

• Rugged Construction – Uses industrial-grade components with protective PCB coating.

• Direct Rack Integration – Installs directly into the Mark VI control chassis with minimal wiring.

• Status & Health Monitoring – Supports system diagnostics for early fault detection.

  

Technical Characteristics

The IS200EROCH1ABB typically includes:

• Multiple relay output channels rated for industrial switching loads.

• Isolation circuitry to protect control processors from electrical disturbances.

• Front-panel indicators for relay status and health monitoring.

• Standard GE connectors for quick and secure plug-in installation.

Application Areas

• Gas turbine and steam turbine emergency protection

• Generator trip systems

• Oil & gas plant shutdown systems

• Power plant auxiliary protection schemes

Installation and Maintenance

Installation is straightforward: the module slides into the Mark VI rack and connects through edge connectors. Maintenance is minimal; operators generally rely on system diagnostics to monitor health. In the event of failure, the board is usually replaced rather than repaired, ensuring system reliability and compliance with functional safety standards.

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