GE IS200VTCCH1CBB Thermocouple Input Board, MRP680489

Technical Specifications

Model: IS200VTCCH1CBB, MRP680489

Brand: GE（GE Vernova）

Product Type: Thermocouple input board

Matching System: GE Speedtronic Mark VI turbine control system

Input Channels: 24‑channel multi‑type thermocouple input

Supported Thermocouple: Type K, T, E, J

Function: Built‑in cold‑junction compensation for accurate temperature reading

Signal Processing: Hardware low‑pass filter for micro‑volt level weak signal

Bus Interface: Dual VME backplane bus connector

Indicator: On‑board LED for module status and fault alarm

Installation: 6U rack plug‑in module for Mark VI control rack

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

Humidity:5%‑95% non‑condensing

Protection Class:IP20

Weight:0.72kg

Dimension:340mm ×210mm ×30mm

Compatible System: Gas turbine, steam turbine, combined‑cycle generator control cabinet

Core Function

VTCC thermocouple input board for Mark VI turbine control system. It collects millivolt thermocouple signals from turbine exhaust, bearing, combustion chamber and other key temperature measuring points. It completes cold‑junction compensation and digital conversion, transmits temperature data to main controller for over‑temperature protection, monitoring and logic interlock. Hardware filter suppresses field electromagnetic interference for weak thermocouple signals. It supports simplex and TMR triple‑modular redundant turbine control configuration, provides critical temperature data for safe turbine operation.

Product Details

The IS200VTCCH1CBB with part number MRP680489 belongs to VTCC series thermocouple input board for GE Speedtronic Mark VI turbine control system.

This 6U rack‑insert board is the core temperature acquisition unit of turbine control rack. It receives multi‑type thermocouple weak millivolt signals from field temperature sensors. Built‑in cold‑junction compensation circuit eliminates measuring deviation caused by terminal temperature drift. Hardware filtering circuit effectively filters high‑frequency interference on micro‑volt level signals, improving stability of temperature measurement data. Temperature data is uploaded to main controller via VME backplane bus to realize exhaust over‑temperature trip, bearing temperature monitoring and equipment condition evaluation. Module status LED facilitates on‑site inspection and fault diagnosis. Conformal coated circuit board improves anti‑vibration, moisture‑proof and anti‑electromagnetic‑interference performance, adapts to harsh working environment of power plant turbine cabinet. Widely used in simplex and TMR triple‑modular redundant gas‑steam turbine and combined‑cycle unit control cabinets.

It belongs to critical temperature acquisition 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 temperature measuring loop debugging and defective IS200VTCCH1CBB board replacement.