Description
Overview
The IS200TSVOH1B Servo Terminal Board is a GE Mark VIe interface module designed to terminate, route, and condition servo‑related signals for turbine control systems. It provides the electrical interface between electro‑hydraulic servo valves, LVDT feedback devices, and the Mark VIe I/O processor, enabling precise valve positioning and stable turbine operation.
Functional Characteristics
This terminal board supports two electro‑hydraulic servo valve channels used for steam and fuel valve actuation. It also accommodates multiple Linear Variable Differential Transformer (LVDT) inputs, which provide high‑resolution positional feedback to the control system.
Key functional features include:
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Two servo valve output channels
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Multiple LVDT feedback inputs for valve position sensing
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Dedicated connectors for Simplex and TMR configurations
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High‑integrity wiring paths for real‑time control signals
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Termination points for external trip signals
The IS200TSVOH1B connects to the VSVO I/O processor through the J5 front‑panel connector and interfaces with the VME rack via J3/J4 connectors, ensuring robust communication and deterministic control performance.
Redundancy and Safety Features
The board supports:
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Simplex operation via JR1
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Triple Modular Redundant (TMR) operation via JR1, JS1, and JT1
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External trip signal inputs through JD1 and JD2
These features enhance system reliability and ensure safe turbine shutdown under abnormal conditions.
Mechanical and Electrical Specifications
| Parameter |
Specification |
| Model |
IS200TSVOH1B |
| Product Type |
Servo Terminal Board |
| Brand |
GE |
| Series |
Mark VIe |
| Dimensions |
33 × 17.7 × 5 cm |
| Weight |
0.85 kg |
| Origin |
USA |
| HS Code |
8537101190 |
| Condition |
New |
| Availability |
In Stock |
| Servo Channels |
2 electro‑hydraulic servo outputs |
| Feedback Inputs |
LVDT position feedback |
| Operating Mode |
Simplex / TMR |
| System Compatibility |
DCS / Mark VIe |
| Minimum Order |
1 unit |
Integration and System Role
The IS200TSVOH1B is used to:
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Interface servo valves with the Mark VIe control processor
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Provide accurate LVDT feedback for valve position control
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Support turbine fuel and steam valve actuation
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Enable high‑speed, closed‑loop servo control
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Integrate external trip signals into the protection system
Its rugged construction and optimized signal routing make it suitable for high‑vibration turbine enclosures.
Application Scenarios
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Gas turbine servo valve control
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Steam turbine valve actuation
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High‑precision LVDT‑based position feedback systems
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Mark VIe control cabinet installations
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TMR‑based turbine protection architectures
FAQ
Q: How many servo valves can the board interface? A: It supports two electro‑hydraulic servo valve channels.
Q: Does the board support TMR operation? A: Yes. JR1, JS1, and JT1 connectors enable full TMR functionality.
Q: What type of feedback sensors are supported? A: The board accepts LVDT feedback signals for precise valve position measurement.
