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GE IS200VCRCH1B｜Discrete I/O Board｜

GE IS200VCRCH1B｜Discrete I/O Board｜illustration

I/O & Hardware Specifications

Discrete Inputs: 48 × dry contact inputs

Discrete Outputs: 24 × relay outputs

Input Power Supply:

24 VDC or

125 VDC
(compatible with TBCIH1 / TBCIH2 terminal boards)

SOE Resolution: 1 ms (Sequence of Events recording)

System Interface: VME backplane communication with Mark VI controller

Terminal Interfaces:

J3 / J4 connectors

Compatible with TBCI (input) and TRLY (relay output) terminal boards

Mechanical & Environmental Parameters

Form Factor: Standard VME board

Dimensions (W × H × D): Approx. 320 × 160 × 25 mm

Weight: Approx. 0.8 kg

Operating Temperature: –10 °C to +60 °C

Core Functions & Application Scenarios
Discrete Signal Processing

The module provides reliable discrete signal handling for turbine control systems:

48 dry contact inputs for monitoring valve positions, pressure switches, limit switches, and other field signals

24 relay outputs for driving actuators, alarm devices, and interlock logic

Ideal for turbine start/stop control, protection logic, and safety interlocking applications.

GE IS200VCRCH1B｜Discrete I/O Board｜

High-Precision Event Recording

With 1 ms SOE resolution, the module accurately records the timing and sequence of critical signal changes, supporting detailed fault analysis, root-cause investigation, and system diagnostics.

Redundancy & System Compatibility

Designed to support redundant Mark VI system architectures, the module is fully compatible with the VCCC (Multifunction Control Communication Card). It can also serve as a compact and efficient solution for I/O expansion in existing Mark VI installations.

Typical Applications

Gas and steam turbine control systems

Power plant auxiliary and island equipment monitoring

Petrochemical industry compressor and pump group control

Industrial safety interlocking and alarm systems

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GE IS200VCRCH1B｜Discrete I/O Board｜illustration1

By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.

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