GE IS200TSVOH1B Servo Terminal Board

Technical Specifications

• Manufacturer: General Electric (GE)
• Series: Speedtronic Mark VI
• Model: IS200TSVOH1B
• Function: Servo valve termination and control
• Channels: 2 independent servo channels
• Feedback Sensors: Supports LVDT/LVDR (0–7.0 Vrms); up to 6 sensors per channel
• Input Pulse Rate: 2–14 kHz
• Power Supply: 24 V DC
• Operating Temperature: -40°C to +85°C
• Dimensions: 178 mm × 330.2 mm × 25 mm (7 in × 13 in × 1 in)
• Weight: <0.91 kg (2 lbs)
• Construction: Multilayer PCB, surface-mount components, barrier-type terminal blocks
• Coating: Conformal coated for dust/moisture resistance
• Certifications: CE, UL (industrial safety standards)

Key Features

1. Dual-Channel Servo Control
   • Provides 2 isolated servo channels to drive electro-hydraulic servo valves for steam/fuel valve positioning.
   • Delivers precise current output for accurate valve modulation under dynamic load conditions.
2. LVDT Feedback Integration
   • Accepts position feedback from up to 12 LVDT/LVDR sensors (6 per channel) for closed-loop valve control.
   • Processes 0–7.0 Vrms AC signals to ensure accurate valve position monitoring and adjustment.
3. Turbine Trip Safety Function
   • Activates servo clamp during turbine trip events to lock valves in a safe position, preventing system damage.
   • Works in tandem with the Mark VI controller for rapid fault response and shutdown.
4. Robust Industrial Design
   • Conformal coating protects against humidity, dust, and vibration in power-plant environments.
   • Barrier-type terminal blocks enable secure, field-wireable connections for sensors and valves.
5. Seamless Mark VI Integration
   • Interfaces directly with the VSVO I/O processor via dedicated cables for high-speed data exchange.
   • Supports simplex, dual, and triple-redundant Mark VI system configurations.

Application Scenarios

• Power Generation Plants
  • Gas Turbines: Controls fuel and inlet guide vane (IGV) servo valves; monitors LVDT feedback for precise speed/load regulation.
  • Steam Turbines: Regulates steam inlet and extraction valves; ensures stable pressure/temperature control during base-load and peak operations.
  • Combined-Cycle Plants: Integrates gas and steam turbine controls; coordinates servo valve operation for optimal efficiency.
• Industrial Turbine Systems
  • Refineries & Petrochemicals: Drives turbine-driven compressors/pumps; controls process gas/steam valves for refining operations.
  • Pipelines: Manages gas turbine-driven compressors; regulates flow control valves for long-haul transmission.
• Turbine Control System Maintenance
  • System Upgrades: Replaces legacy termination boards in older Mark VI installations to enhance reliability.
  • Fault Troubleshooting: Diagnoses servo valve and LVDT signal issues; validates control loop performance during scheduled outages。