GE IS200SDIIH1ADB Digital Relay Output Board, MRP683026

Technical Specifications

Model: IS200SDIIH1ADB, MRP683026

Brand: GE（GE Vernova）

Product Type: Simplex digital relay output terminal board

Matching System: GE Speedtronic Mark VI turbine control system

Relay Channel: 12‑channel Form‑C dry‑contact relay output

Contact Rating: Industrial low‑power switching load

Connection: Ribbon cable interface connects to VTUR / VCRC / VCC processor board

Expansion: Supports cascading second board for total 24 relay outputs

Architecture: Simplex design, not suitable for TMR triple‑modular redundant configuration

Indicator: On‑board LED for each relay channel status

Mounting: Cabinet flat‑panel mounting

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

Humidity:5%‑95% non‑condensing

Protection Class:IP20

Weight:0.70kg

Dimension:210mm ×170mm ×30mm

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

Core Function

SDII simplex relay output board for Mark VI turbine control system. It receives discrete control commands from Mark VI main processor board, drives Form‑C relay contacts to output on‑off signals for site solenoid valves, auxiliary relays and interlock equipment. Each channel LED directly reflects relay actuation state for commissioning check. It applies to simplex turbine control configuration, realizes auxiliary equipment start‑stop and protective logic output for turbine control loops.

Product Details

The IS200SDIIH1ADB with part number MRP683026 belongs to SDII series relay output terminal board for GE Speedtronic Mark VI turbine control system.

This simplex‑type relay terminal board is installed inside turbine control cabinet. It connects to upper‑level CPU processor board via dedicated ribbon cable, converts internal logic commands into physical relay dry‑contact outputs for field devices. 12 Form‑C relay channels drive site solenoid valves, auxiliary relays and alarm indication equipment. It supports cascading an extra identical board to expand up to 24 contact outputs for larger‑scale auxiliary control requirements. Per‑channel LED status indicators help technicians verify relay action and locate wiring 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 in simplex‑configured gas‑steam turbine and generator control cabinets for auxiliary interlock and alarm signal output.

It belongs to important relay output 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 output loop debugging and defective IS200SDIIH1ADB board replacement.