The GE IS200VSVOH1B is a VME Servo Control Board designed for the Mark VI Speedtronic system, engineered to manage four electro-hydraulic servo valves for precise steam and fuel valve operation in gas, steam, and wind turbines.

• Advanced Servo Control: Manages 4 electro-hydraulic servo valves with LVDT excitation/feedback and pulse rate flow inputs for accurate valve positioning
• Redundancy Support: Compatible with both simplex and TMR configurations, with TMR signals distributed across three VME racks for enhanced fault tolerance
• Safety Mechanisms: Equipped with suicide relays that automatically short outputs to safe states during faults, requiring manual reset for recovery
• Comprehensive Diagnostics: Monitors servo current, LVDT signals, and calibration status with composite alerts and front-panel LED indicators
• Flexible Integration: Connects to TSVO boards via secure latching connectors, supporting 1-4 LVDTs per control loop and external trip inputs
• Robust Industrial Design: Single-slot form factor featuring FPGAs, relays, and over 70 integrated circuits, built to withstand demanding industrial environments

This control board integrates with TSVO/DSVO terminal boards, utilizing LVDTs for precise valve position feedback while supporting pulse rate flow inputs for accurate gas turbine flow measurement. It executes sophisticated loop control algorithms and features comprehensive diagnostic capabilities through front-panel LEDs.