GE IS200TDBTH6ABC Discrete I/O Terminal Board, MRP768176

Technical Specifications

Model: IS200TDBTH6ABC, MRP768176

Brand: GE（GE Vernova）

Product Type: Simplex discrete I/O terminal board

Matching System: GE Speedtronic Mark VI turbine control system

Signal Voltage: 125VDC industrial control loop

Channel Configuration: 24‑channel isolated digital input, 12‑channel Form‑C relay output

Interface: Dual 48‑pin screw terminal blocks for field wiring

Isolation: Galvanic isolation between field side and control system side

Contact Rating: Relay contact rated for low‑power industrial switching

Indicator: On‑board LED indicators for each channel status

Mounting: Cabinet flat‑panel mounting

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

Humidity:5%‑95% non‑condensing

Protection Class:IP20

Weight:1.15kg

Dimension:330mm ×178mm ×26mm

Compatible System: Gas turbine, steam turbine, generator auxiliary control cabinet

Core Function

TDBT simplex discrete I/O terminal board for Mark VI turbine control system. It establishes signal interface between field switches, auxiliary relays and Mark VI main controller. It collects equipment status, limit switch feedback signals and outputs relay control signals to site actuators. Built‑in galvanic isolation suppresses field electromagnetic interference, ensures reliable transmission of interlock and auxiliary control signals. It applies for simplex turbine control configuration, completes signal conditioning and terminal distribution for turbine auxiliary control loops.

Product Details

The IS200TDBTH6ABC with part number MRP768176 belongs to TDBT series discrete terminal board for GE Speedtronic Mark VI turbine control system.

This simplex‑type termination board is installed inside turbine control cabinet. Field discrete signals access through high‑density screw terminal blocks. Input channels acquire status of limit switches and auxiliary devices; Form‑C relay outputs drive site solenoid valves and relay equipment. Independent channel‑to‑channel isolation reduces noise crosstalk from plant field environment. Per‑channel LED status indicators help technicians quickly verify wiring and locate signal faults during commissioning and routine maintenance. Conformal coated circuit board improves anti‑vibration, moisture‑proof and anti‑electromagnetic‑interference performance, adapts to harsh working conditions of power‑plant turbine cabinet. Widely used for auxiliary signal processing in gas‑steam turbine and generator control cabinets under simplex configuration.

It belongs to important signal termination 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 IS200TDBTH6ABC board replacement.