GE IS220PSVOH1B Servo Control I/O Pack

Technical Specifications

Model: IS220PSVOH1B

Brand: GE（GE Vernova）

Product Type: PSVO servo control I/O pack

Matching System: GE Speedtronic Mark VIe / Mark VIeS turbine control system

Power Supply: 28VDC, working voltage 21‑30VDC

Servo Loop: 2 independent servo valve control loops

Feedback Input: Multi‑channel LVDT position feedback input

Communication: Dual redundant IONet Ethernet ports

Matching Terminal Board: TSVO series servo terminal board

Indicator: Front‑panel LED for power, network link, channel enable and fault alarm

Installation: Standard Mark VIe rack plug‑in I/O pack

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

Humidity:5%‑95% non‑condensing

Protection Class:IP20

Weight:0.45kg

Dimension:142mm ×115mm ×40mm

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

Core Function

PSVO servo control I/O pack for Mark VIe turbine control system. It acts as communication bridge between Mark VIe main controller and TSVO servo terminal board. It processes LVDT valve position feedback signals and outputs control commands to drive electro‑hydraulic servo valves. Built‑in channel diagnosis detects loop fault, open‑circuit and abnormal feedback. It supports simplex and TMR triple‑modular redundant turbine control configuration, implements high‑speed closed‑loop position control for fuel valves and steam governing valves, guarantees stable speed and load regulation of turbine units.

Product Details

The IS220PSVOH1B is PSVO series servo control I/O pack for GE Speedtronic Mark VIe turbine control system.

This plug‑in I/O pack cooperates with TSVO servo terminal board to complete servo loop signal interaction. Dual redundant IONet Ethernet realizes reliable data exchange with main controller, transmits valve position setting value and receives real‑time LVDT position feedback. It processes position deviation calculation and outputs driving instruction for servo valve loops. On‑board self‑diagnostic function monitors signal status in real‑time, and reports faults such as signal loss and loop abnormality to control system. Front‑panel LED indicators clearly display power status, network link and channel working state, convenient for commissioning and daily 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 deployed in simplex and TMR triple‑modular redundant gas‑steam turbine control cabinets.

It belongs to critical servo interface spare‑part for Mark VIe turbine control system, widely used in overhaul and renovation projects of power generation units.

It is important spare hardware for servo control loop debugging and defective IS220PSVOH1B module replacement.