GE IS200TBCIH2CAA Discrete Contact Input Terminal Board

Technical Specifications

Model: IS200TBCIH2CAA

Part Number: IS200TBCIH2CAA，MRP604466

Brand: GE（GE Vernova）

Product Type: Discrete contact input terminal board

Matching System: GE Speedtronic Mark VI turbine control system, cooperate with VCRC discrete I/O pack

Signal Input: Multi‑channel dry contact discrete input, grouped isolation design

Excitation Voltage: 24VDC, working range 18.5‑32VDC

Signal Processing: Built‑in hardware filter and surge suppression circuit

Isolation: Optocoupler galvanic isolation between field side and control side

Connector: Multiple 37‑pin D‑sub connectors for connecting I/O packs; barrier‑type terminal blocks for field wiring

Redundancy Mode: Support simplex and TMR triple‑modular redundant system configuration

Coating: Conformal coating for harsh power‑plant environment

Installation: Cabinet panel mounting

Operating Temperature:‑40℃ ~ +70℃, non‑condensing

Protection Class:IP20

Weight:0.72kg

Dimension:262mm ×188mm ×21mm

Compatible System:Gas‑steam turbine, generator unit control cabinet

Core Function

Discrete contact input terminal board for Mark VI turbine control system. It serves as physical wiring interface for field dry‑contact switch signals. It completes signal filtering, surge suppression and optocoupler isolation for discrete input signals, and transmits processed signals to VCRC I/O pack. Supports TMR triple‑modular redundant system deployment, reliably collects equipment status, interlock and on‑off signals of turbo‑generator unit.

Product Details

The IS200TBCIH2CAA (MRP604466) is TBCI series discrete contact input terminal board for GE Speedtronic Mark VI turbine control system.

This terminal board needs to be used together with VCRC discrete I/O pack and cannot work independently. It receives dry‑contact status signals from field switches, limit switches and interlock devices. The built‑in hardware filter can eliminate high‑frequency interference on site, and the surge suppression component can absorb instantaneous pulse noise introduced by cables. Optocoupler isolation separates field circuit and control circuit to avoid ground loop interference. Standard barrier‑type terminal blocks facilitate on‑site wiring and later maintenance replacement. Conformal coated circuit board improves moisture‑proof, dust‑proof and anti‑vibration performance, adapting to complex working conditions of power plant turbine hall.

It is widely used in simplex and TMR triple‑modular redundant gas‑steam turbo‑generator unit control cabinets.

It belongs to important discrete signal spare‑part for Mark VI turbine control system, widely used in overhaul and renovation projects of power generation units.

It is important spare hardware for discrete signal loop debugging and defective IS200TBCIH2CAA board replacement.