GE IS200VCRCH1B | Mark VIe Discrete I/O Interface Board

Dedicated Digital Interface for Speedtronic Systems

The IS200VCRCH1B provides essential discrete input and output functionality within GE’s Mark VIe Speedtronic series. This board interfaces between the turbine control processor and field-mounted digital devices. Furthermore, it ensures reliable reading of switch contacts and precise control of solenoid valves or relay coils.

Engineered for High-Density Rack Mounting

GE designed this I/O board for secure integration into the standard VME rack architecture of the Mark VIe system. Its form factor and connectors provide a direct link to the system backplane and field wiring terminals. Consequently, it supports the high-speed, deterministic data exchange required for critical turbine protection and sequencing.

Robust Signal Conditioning and Isolation

The IS200VCRCH1B incorporates signal conditioning circuits for both input and output channels. It provides necessary electrical isolation to protect sensitive control electronics from field-side transients and noise. Moreover, the board includes status indication for easy monitoring of channel activity during operation and troubleshooting.

Comprehensive Technical Specifications and Interface Data

Below are the key technical parameters for the GE IS200VCRCH1B Discrete I/O Board.

Parameter	Specification
Manufacturer	GE (General Electric)
System Series	Mark VIe Speedtronic Turbine Control
Model Number	IS200VCRCH1B
Board Type	Discrete Input / Output (I/O) Interface Board
Primary Function	Digital Signal Acquisition and Control
Form Factor / Bus	Standard VME
Typical Signal Levels	24 VDC / 48 VDC / 125 VDC (Consult specific manual)
Isolation	Optical or relay-based isolation for noise immunity & safety
Connection Method	Screw terminals via associated terminal boards
Status Indication	LED indicators per channel or group
Compatible System	Interfaces with Mark VIe Controllers & other I/O packs
Primary Application	Turbine Start/Stop Sequencing, Valve Control, Protection Circuit Monitoring

Facilitating Critical Turbine Operational Sequences

This board manages digital signals for automatic turbine startup, loading, and shutdown procedures. It reads permissives from lube oil systems, hydraulic pressure switches, and breaker status contacts. Therefore, the IS200VCRCH1B is integral to the safe and automated operation of gas or steam turbine units.

Enhancing System Diagnostics and Maintenance

Integrated LED indicators provide immediate visual feedback on the state of each I/O point. This feature allows technicians to quickly verify signal presence during commissioning or fault-finding. Such diagnostic capability is crucial for minimizing downtime and ensuring rapid return to service for critical power generation assets.

A Vital Component for Reliable Turbine Control

As a core part of the Speedtronic I/O system, this board’s reliability directly impacts turbine availability. Its design prioritizes longevity and stability in the demanding environment of a turbine control cabinet. Plant engineers and system integrators rely on the IS200VCRCH1B for precise and dependable digital control in continuous operation.