GE DS200SIOBH1AAA SIOB Servo I/O Board

Technical Specifications

Model: DS200SIOBH1AAA

Brand: GE (GE Vernova)

Product Type: SIOB Servo I/O Interface Board

Applicable System: Speedtronic Mark V gas & steam turbine control system

Core Function: Servo valve drive output, LVDT/RVDT position signal acquisition, servo loop closed‑loop processing

Hardware Interface: Dual 40‑pin external connectors, VME edge backplane connector, 20 configurable jumpers, three switch blocks

Circuit Feature: Servo current amplification, position signal demodulation, surge suppression and noise filtering

Indicator: Multi‑channel onboard LED for channel status and fault alarm indication

Power Supply: VME rack backplane multi‑voltage auxiliary power supply

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

Humidity:5%‑95% non‑condensing

Protection Class:IP20, cabinet rack‑mount installation only

Weight:0.52kg

Dimension:240mm ×190mm ×32mm

Application: Power plant gas‑steam turbine control cabinet, fuel and steam valve control unit

Product Function Description

DS200SIOBH1AAA SIOB servo I/O board is a key servo control hardware for Mark V turbine system. It receives position command signals from the main processor, outputs amplified drive current to drive servo valves, and controls fuel valves, steam valves and actuators.

This board collects LVDT/RVDT position feedback signals of valve actuators, completes signal demodulation and conditioning, and feeds real‑time position data back to the controller to realize high‑precision closed‑loop position adjustment. Jumpers and DIP switches on the board support on‑site configuration for different servo actuator parameters. AAA hardware revision optimizes signal demodulation circuit, improves anti‑interference performance, guarantees stable response of turbine fuel regulation and load adjustment logic.

Product Details

Rack‑mount multilayer PCB board plugs into Mark V VME cabinet slot directly. Conformal coating protects circuit board from dust, moisture and strong electromagnetic interference in power‑plant environment, meeting long‑term continuous operation requirements. Original OEM product is end‑of‑life, widely used for unit overhaul and spare‑part replacement. Strict electrostatic protection is required during installation, verify jumper and DIP‑switch configuration to match on‑site servo actuator parameters.