Description
The GE IS200TSVOH1B is a Servo Terminal Board designed for the GE Mark VI Speedtronic turbine control system. It provides the field interface between the VSVO servo control processor and electro-hydraulic servo valve systems used in gas and steam turbine applications. The board handles servo valve wiring, LVDT/LVDR position feedback signals, pulse rate inputs, external trip connections, and terminal signal conditioning.
The IS200TSVOH1B supports precise turbine valve position control by connecting servo current outputs with feedback sensors. It can be applied in Simplex and TMR (Triple Modular Redundant) architectures through dedicated connectors, making it suitable for high-reliability turbine control environments.
🔹 Product Parameters
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Model | IS200TSVOH1B |
| Series | Mark VI Speedtronic / IS200 |
| Product Name | Servo Terminal Board |
| Application | Gas & Steam Turbine Servo Valve Control |
| Origin / Place of Manufacture | USA |
| Product Status | New Surplus / Refurbished / Used Available |
| Dimensions | Approx. 33 × 17.7 × 5 cm |
| Weight | Approx. 0.5–0.85 kg |
| Power Requirement | 24 VDC nominal supply |
| Technology | Surface Mount PCB |
| Servo Interface | Bidirectional servo current outputs |
| Feedback Interface | LVDT/LVDR valve position feedback |
| Communication Interface | VSVO I/O processor connection via J5 and VME rack connectors |
| Operating Mode | Simplex / TMR Redundant Configuration |
| Discontinued Status | Legacy product, replaced by newer turbine control platforms |
🔹 Common Questions & Answers
Q: What is the main function of the GE IS200TSVOH1B?
A: It is a servo terminal interface board used in GE Mark VI systems to connect turbine servo valves, LVDT feedback sensors, and the VSVO servo control processor.
Q: Which GE system uses the IS200TSVOH1B?
A: It is mainly used in GE Mark VI Speedtronic turbine control systems.
Q: What type of feedback sensors does this board support?
A: The board supports LVDT/LVDR position feedback devices for accurate valve position monitoring.
Q: Can the IS200TSVOH1B work in redundant turbine control systems?
A: Yes. It supports both Simplex and TMR configurations depending on the system architecture.
Q: What are common failure symptoms?
A: Typical issues may include servo valve control faults, incorrect valve position feedback, communication alarms, or terminal wiring problems.
Q: What should be checked before replacement?
A: Verify the part number, revision level, wiring configuration, terminal connections, and compatibility with the installed Mark VI control rack.
🔹 Recommended GE Models
- IS200VSVOH1B – Mark VI Servo Control Board for electro-hydraulic valve control
- IS200TSVCH2A – Mark VI Servo Terminal Board for turbine control applications
- IS200TBAIH1C – Mark VI Analog Input Terminal Board
- IS200TBAOH1C – Mark VI Analog Output Terminal Board
- IS200TRLYH1B – Mark VI Relay Output Terminal Board
- IS200PTURH1B – Mark VI Turbine Processor Module
- IS200PDIOH1B – Mark VI Digital Input/Output Terminal Board
- IS200PDIAH1B – Mark VI Digital Input Terminal Board
- IS200PDMRH1A – Mark VI Protection Module Interface Board
- IS200UCIOH1A – Mark VI Universal Control Interface Board
- IS220PTURH1B – Mark VIe Turbine I/O Module
- IS220PDIOH1A – Mark VIe Discrete I/O Pack
- IS220PAICH1A – Mark VIe Analog Input I/O Pack
- IS220PDOAH1A – Mark VIe Discrete Output I/O Pack
- IS420UCSCH2A – Mark VIe Controller Module
