GE IS220PSVOH1B PSVO Servo Control I/O Pack

Technical Specifications

Model: IS220PSVOH1B

Part Number: IS220PSVOH1B，336A5026ADP18

Brand: GE（GE Vernova）

Product Type: PSVO servo control I/O pack

Matching System: GE Speedtronic Mark VIe, Mark VIeS turbine control system, cooperates with WSVO driver and TSVO servo terminal board

Power Supply:28VDC auxiliary power supply

Control Loop:2 independent servo valve position control loops

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

Servo Output:Bidirectional servo current 10‑120mA for driving electro‑hydraulic servo valves

Communication:Dual‑port 10/100Mbps IONet redundant Ethernet, IR infrared local diagnostic port

Connector:DC‑62 pin back‑plane connector for connecting servo terminal board

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

Indicator:Front‑panel LED indicators for network, power and fault status

Installation:Mark VIe rack plug‑in installation, hot‑swap supported

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

Protection Class:IP20

Weight:0.45kg

Dimension:126mm ×60mm ×160mm

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

Core Function: PSVO servo control I/O pack for Mark VIe turbine control system. It works with WSVO servo driver and TSVO terminal board, collects LVDT valve‑position feedback and pulse‑rate speed signals, outputs adjustable bidirectional servo current to drive field electro‑hydraulic servo valves. It realizes high‑precision closed‑loop position control for fuel valve, steam valve and inlet guide vane. Communicates with main controller through IONet redundant Ethernet, supports TMR triple‑modular redundant architecture, ensures stable and reliable servo regulation of turbo‑generator unit.

Product Details

The IS220PSVOH1B (336A5026ADP18) is PSVO series servo control I/O pack for GE Speedtronic Mark VIe distributed turbine control system.

This hot‑swappable compact I/O pack undertakes servo‑loop signal processing tasks. It receives control commands from main controller via dual‑port IONet redundant Ethernet, collects LVDT valve‑position and shaft speed signals, and outputs servo driving current. Matched WSVO driver amplifies current signal to control electro‑hydraulic servo valves. IR infrared service port supports local on‑site debugging and parameter setting without host computer. Front‑panel multi‑group LED indicators facilitate network status observation and fault quick‑location.

Enhanced anti‑interference hardware design adapts to high‑vibration and large‑electromagnetic‑interference environment of power‑plant turbine hall. It supports automatic re‑configuration after module replacement, reduces system maintenance downtime.

It belongs to key servo‑loop spare‑part for Mark VIe 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 IS220PSVOH1B pack replacement.