Description
The GE General Electric IS200TSVCH1A, also identified as IS200TSVCH1AAA, is a Servo Input/Output Terminal Board for GE Mark VI/Mark VIe turbine control systems. The TSVC board provides the field-side interface for electro-hydraulic servo valves and LVDT valve-position feedback. It is designed to work with the PSVO I/O pack and WSVO servo driver and supports Simplex, Dual, and Triple Modular Redundant (TMR) control configurations. The board provides two servo valve output channels, isolated and non-isolated LVDT excitation, multiple LVDT winding inputs, and two pulse-rate signal inputs for turbine control applications.
| Parameter | Specification |
|---|---|
| Brand | GE General Electric |
| Model | IS200TSVCH1A |
| Full Part Number | IS200TSVCH1AAA |
| Series | Mark VI / Mark VIe |
| Product Name | Servo Input/Output Terminal Board |
| Functional Acronym | TSVC |
| Servo Valve Outputs | 2 |
| LVDT Inputs | 8 |
| Pulse-Rate Inputs | 2 |
| Power Supply | 24 VDC, 5 A |
| Dimensions | Approx. 330.2 × 178 mm |
| Weight | Approx. 0.5 kg; varies by assembly |
| Place of Manufacture | USA |
| Product Status | New |
| Discontinued | Legacy / discontinued |
Key Features
• Designed for GE Mark VIe turbine control applications
• Provides the field interface for two electro-hydraulic servo valves
• Supports LVDT-based valve position feedback
• Provides 4 isolated LVDT excitation outputs and 2 non-isolated excitation outputs
• Supports 8 LVDT winding inputs
• Provides 2 pulse-rate signal inputs supporting magnetic or TTL signals
• Compatible with PSVO I/O packs and WSVO servo drivers
• Supports Simplex, Dual, and TMR system architectures
• Conformal-coated PCB for industrial turbine-control cabinet installation
• Includes diagnostic functions for regulator feedback, servo current, and board identification faults
Common Questions & Answers
Q: What is the IS200TSVCH1A used for?
A: It is a Servo Input/Output Terminal Board used to connect GE turbine-control hardware with electro-hydraulic servo valves and valve-position feedback devices.
Q: How many servo valves can it interface with?
A: The TSVC board provides two servo valve output channels.
Q: How many LVDT channels are available?
A: The board supports eight LVDT winding inputs for valve-position feedback.
Q: Which I/O pack is compatible with the TSVC board?
A: The IS200TSVCH1A is designed to work with the PSVO I/O pack and WSVO servo driver. It is not intended for the VSVO processor.
Q: Does it support redundant turbine-control configurations?
A: Yes. The board can be used in Simplex, Dual, and TMR configurations.
Q: What power supply is associated with this board?
A: Published specifications identify a 24 VDC, 5 A power supply for the TSVC assembly. Verify the actual cabinet supply and wiring before installation.
Q: Is IS200TSVCH1AAA a different board?
A: IS200TSVCH1AAA is an extended/full identification associated with the IS200TSVCH1A assembly. Match the complete part number and hardware revision before replacement.
Safety & Troubleshooting
• Isolate turbine-control power before removing or installing the terminal board.
• Verify the exact board revision and complete part number before replacement.
• Check servo valve wiring, LVDT connections, terminal blocks, and external trip connections if a servo channel reports a fault.
• For abnormal valve-position feedback, inspect LVDT excitation, winding signals, sensor wiring, and regulator feedback diagnostics.
• For servo-current faults, verify the servo driver, field wiring, valve coil, and configured output-current settings.
• Confirm the PSVO/WSVO hardware combination and system architecture before commissioning.
• Do not change terminal wiring or jumper settings while the turbine control system is energized.
Recommended GE Models
- IS200TSVCH1B — Servo Terminal Board
- IS200TSVOH1A — Servo Terminal Board
- IS200PSVOH1A — Servo I/O Pack Interface
- IS220PSVOH1A — Servo Control I/O Pack
- IS220PSVOH1B — Servo Control I/O Pack
- IS200TBAIH1C — Analog I/O Terminal Board
- IS200TBQCG1A — Terminal Board
- IS200TBQDG1A — Terminal Board
- IS200STAIH2A — Simplex Analog Input Terminal Board
- IS200STCIH1A — Contact Input Terminal Board
- IS200STCIH6A — Contact Input Terminal Board
- IS200TRLYH1B — Relay Terminal Board
- IS200TREGH1A — Turbine Emergency Trip Terminal Board
- IS200TPROH1A — Protective Terminal Board
- IS200TCTAH1A — Current Transformer Terminal Board
