Description
1. Product Title
GE IS200TSVCH1A – Mark VI Servo Control Termination Board
2. Product Overview
The IS200TSVCH1A is a specialized Servo Control Termination Board developed for the GE Speedtronic Mark VI turbine control system. This module is the primary interface for electro-hydraulic servo valves, which are used to precisely position fuel valves, inlet guide vanes (IGV), and steam valves. Its core function is to facilitate the flow of signals between the servo-actuators in the field and the VME-based servo-controller modules in the rack.
In the high-stakes environment of turbine operation, valve positioning must be both fast and incredibly accurate. TheIS200TSVCH1A solves the industrial challenge of signal integrity by providing dedicated landing points for both the servo coil drive outputs and the feedback signals from Linear Variable Differential Transformers (LVDTs) or Rotary Variable Differential Transformers (RVDTs). By centralizing these connections, it ensures a clean, noise-resistant feedback loop essential for stable turbine governing.
3. Technical Specifications
- Brand: General Electric (GE)
- Model: IS200TSVCH1A
- Warranty: One Year
- Condition: 100% New & Original
- Series: Mark VI Speedtronic
- Servo Channels: Typically supports up to 2 independent servo loops
- Feedback Compatibility: LVDT, RVDT, and Pulse-rate transducers
- Servo Outputs: Support for redundant servo coils (bi-directional current drive)
- Termination: Two-tier screw-type barrier terminal blocks
- Excitation: Onboard LVDT/RVDT excitation (typically 3.2 kHz or 7 kHz)
- Operating Temp: -30°C to +65°C (-22°F to +149°F)
4. Key Features & Benefits
- Precision Excitation: TheIS200TSVCH1A provides high-stability AC excitation for LVDT sensors, ensuring that the feedback signal accurately represents the physical valve position.
- Dual Loop Support: Capable of managing multiple servo loops, allowing for coordinated control of main and pilot fuel valves on a single board.
- Redundant Coil Interfacing: Designed to drive multiple coils within a single servo valve, facilitating Triple Modular Redundant (TMR) control schemes for fail-safe operation.
- Hardware Diagnostics: Includes passive components that allow the controller to monitor the health of the servo loop, detecting open circuits or shorted coils in real-time.
5. Application Scenarios
- Gas Turbine Fuel Control: Used to drive the servo valves on the primary and secondary fuel manifolds of GE Frame 7FA and 9FA turbines.
- Inlet Guide Vane (IGV) Positioning: Manages the actuators that adjust the angle of turbine inlet vanes to optimize airflow and combustion efficiency.
- Steam Turbine Admission Valves: Controls the high-pressure steam valves required for frequency regulation and load management in combined-cycle power plants.
6. Frequently Asked Questions (FAQ)
- Q: What is the primary function of the <span style=”color: blue;”>IS200TSVCH1A</span>?
- A: It is a termination board that connects servo valve drive outputs and LVDT/RVDT feedback sensors to the Mark VI control system.
- Q: Does the <span style=”color: blue;”>IS200TSVCH1A</span> support TMR (Triple Modular Redundant) systems?
- A: Yes, it is designed to distribute feedback to and receive drive signals from the R, S, and T processors in a TMR configuration.
- Q: Can this board be used with RVDTs?
- A: Yes, theIS200TSVCH1A is compatible with both Linear (LVDT) and Rotary (RVDT) Variable Differential Transformers.
