GE IS200TSVCH1A TSVC Servo I/O Terminal Board

Technical Specifications

Model: IS200TSVCH1A

Part Number: IS200TSVCH1A

Brand: GE（GE Vernova）

Product Type: TSVC servo input‑output terminal board

Matching System: GE Speedtronic Mark VI turbine control system, match with PSVO I/O pack and WSVO servo driver

Power Supply:28VDC ±10% auxiliary power supply

Servo Output:2‑channel bi‑directional servo current output, 10‑120mA, supports three‑coil servo valves

Feedback Input:8‑channel LVDT valve‑position winding input; 2‑channel pulse‑rate tachometer input

LVDT Excitation:3.2kHz excitation signal, including isolated and non‑isolated excitation sources

Terminal:24‑position barrier‑type terminal blocks, support #12 AWG field wiring, shield ground terminal strip

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

Diagnostic:On‑board LED status indicators for power and loop fault diagnosis

Installation:Mark VI VME rack plug‑in installation

Operating Temperature:‑30℃ ~ +65℃, non‑condensing

Protection Class:IP20

Weight:1.20kg

Dimension:330mm ×178mm ×32mm

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

Core Function: TSVC servo I/O terminal board for Mark VI turbine control system. It serves as physical interface for field electro‑hydraulic servo valves and LVDT valve‑position sensors. Provides LVDT excitation, outputs bi‑directional current to drive servo valves, collects valve‑position feedback and keyphasor pulse‑rate signals. Works with PSVO and WSVO servo driving pack, supports TMR triple‑modular redundant control, realizes precise closed‑loop regulation of steam valve and fuel valve for turbo‑generator unit.

Product Details

The IS200TSVCH1A is TSVC series servo valve control terminal board for GE Speedtronic Mark VI turbine control system.

This VME rack‑mount terminal board is dedicated to servo loop signal termination. It connects field electro‑hydraulic servo valves and LVDT valve position sensors through barrier‑type terminal blocks, supplies excitation power for LVDTs, outputs adjustable bi‑directional current to drive three‑coil servo valves. Transformer isolation design suppresses field‑introduced electromagnetic interference and ground‑loop disturbance. Two pulse‑rate input channels receive tachometer keyphasor signals for speed monitoring. It is only compatible with PSVO I/O pack and WSVO servo driver, cannot match VSVO processor. On‑board LED indicators help engineers check loop status and locate field wiring faults rapidly. Conformal coated PCB improves anti‑vibration, moisture‑proof and anti‑interference performance, adapts to harsh turbine‑hall environment of power plant.

It belongs to key servo‑loop spare‑part for Mark VI turbine control system, widely used in overhaul and renovation projects of gas‑steam turbo‑generator units.

It is important spare hardware for turbine servo control loop debugging and defective IS200TSVCH1A board replacement.