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GE IS200VSVOH1B
VME Servo Control Board (VSVO) for GE Mark VI Speedtronic turbine control systems. It provides electro-hydraulic servo valve control and LVDT/RVDT position feedback processing for gas and steam turbines.
- Technical Specifications: 4 independent servo output channels, ±10 V or 4–20 mA (jumper-selectable); 16-bit position resolution with <0.1 % full-scale accuracy; 10 kHz (100 µs) PID loop update; LVDT/RVDT excitation and demodulation at 0–10 kHz carrier; dual 10/100/1000 Mb Gig-E Ethernet ports; 1500 V channel-to-channel and channel-to-ground isolation; +5 V @ 1.5 A, ±15 V @ 0.3 A typical power; 0–60 °C operational, –40–+85 °C storage; ≈ 0.64 kg; CE, UL, RoHS, Zone 2 ready.
Detailed content
- Functional Features: Executes PID, lead-lag, and limit logic every 100 µs for sub-millisecond fuel valve and inlet guide vane response; on-board sine-wave exciter and synchronous demodulator eliminate external LVDT conditioners; votes command outputs and cross-checks LVDT health before driving servo valves; RUN (green), FAIL (red), STATUS (orange) LEDs; fan-less design for hazardous locations.
- Application Scenarios: Primary voted-redundant servo controller in Mark VI racks for gas turbine fuel valves and IGV actuators; anti-surge servo valves and compressor inlet guide vanes in pipeline compressor stations; well-head choke position and engine governors on offshore platforms.
- Structural Characteristics: Standard Mark VI VME form factor; front connectors J5 (servo cable), J3/J4 (VME I/O), JD1/JD2 (external trip); industrial conformal coating.
- Installation & Usage Notes: System power must be removed before installing or removing the board — not hot-swappable; insert evenly into the assigned VME slot ensuring backplane pins engage, secure with faceplate screws; terminate external trip wiring to JD1/JD2 and verify signal logic before transition to operational mode; confirm cabinet temperature and humidity are within industrial range; perform software-directed stroke check and validate LVDT feedback before initiating turbine fuel control.
