GE IS200TBCIS2CCD Group‑Isolated Dry Contact Input Terminal Board

Technical Specifications

Model: IS200TBCIS2CCD

Part Number: IS200TBCIS2CCD

Brand: GE（GE Vernova）

Product Type: TBCI group‑isolated contact input termination board

Matching System: GE Speedtronic Mark VI turbine control system, mate with PDIA I/O processor

Power Supply:24VDC

Input Channels:24‑channel dry‑contact discrete input, divided into 3 isolated groups, 8 channels per group

Isolation:Group‑to‑group galvanic isolation

Signal Filter:Built‑in surge‑suppression and EMI filter for each channel

Connector:Field wiring barrier terminal blocks, multi‑pin rear‑board connectors

Installation:Mark VI control rack plug‑in installation

Operating Temperature:‑40℃ ~ +85℃, non‑condensing

Protection Class:IP20

Weight:0.45kg

Dimension:340mm ×178mm ×32mm

Compatible System:Power plant gas‑steam turbine control cabinet

Core Function:Dedicated dry‑contact signal termination board for Mark VI turbine control system. It receives status signals from field limit switches, pressure switches and equipment dry‑contact relays. Completes signal filtering, surge suppression and group isolation, transmits conditioned discrete signals to PDIA I/O processor. Supports simplex and TMR triple‑modular redundant architectures, implements turbine interlock logic, trip protection and high‑precision SOE sequence‑of‑event recording.

Product Details

The IS200TBCIS2CCD is group‑isolated dry‑contact input terminal board for GE Mark VI Speedtronic turbine control system.

This plug‑in board is installed in Mark VI standard control rack, equipped with barrier‑type terminal blocks for field dry‑contact device wiring. 24 input channels are divided into three independent isolation groups to reduce cross‑interference between signal loops. Each channel integrates surge‑suppression and EMI filter circuits, which restrain voltage spikes and high‑frequency noise interference from field side. It transfers contact status signals to PDIA I/O processing board for logic calculation, provides reliable switch‑state data for turbine protection, interlock and sequence‑of‑event recording functions.

Conformal coated circuit board improves anti‑vibration and anti‑interference performance, adapts to harsh electromagnetic environment of power‑plant turbine hall. It supports simplex and TMR triple‑modular redundant safety control configurations for turbo‑generator units.

It belongs to key discrete signal termination spare‑part for Mark VI turbine control system, widely used in overhaul and renovation projects of gas‑steam turbine generating units.

It is important spare hardware for turbine discrete signal loop debugging and defective IS200TBCIS2CCD board replacement.