GE IS200TSVCH1A | Servo Terminal Board

Description

🔹 Product Description

The GE IS200TSVCH1A Servo Terminal Board is a Mark VI/Mark VIe turbine control interface board used to connect electro-hydraulic servo valves, LVDT position sensors, and pulse-rate signal devices to the turbine control system. The board is identified by the functional acronym TSVC and uses an A-rated functional revision.

The TSVC terminal board provides two bi-directional servo current output channels, LVDT excitation and feedback interfaces, and two pulse-rate inputs. It is designed to work with the PSVO I/O pack and WSVO servo driver, supporting simplex, dual, and TMR configurations. The board uses field terminal blocks and a chassis-grounded shield connection for field wiring.

The supplied listing identifies the assembly as IS200TSVCH1AEC. Before installation, verify the complete assembly number, board revision, terminal configuration, mating I/O hardware, and existing system wiring.

🔹 Product Datasheet

Parameter	Value
Brand	General Electric (GE)
Model	IS200TSVCH1A
Assembly Number	IS200TSVCH1AEC
Series	Mark VI / Mark VIe
Product Name	Servo Input/Output Terminal Board
Functional Acronym	TSVC
Functional Revision	A
Place of Origin	USA
Product Status	Legacy Industrial Control Board
Dimensions	Approx. 330.2 × 178 × 50–55 mm
Weight	Approx. 0.45–0.85 kg; verify actual unit
Power	24 VDC system supply; verify cabinet configuration
Discontinued	Yes / discontinued according to current distributor information

🔹 Common Questions & Answers

Q: What is the GE IS200TSVCH1A used for?
A: It provides the field interface for servo valves, LVDT position feedback, and pulse-rate signals within compatible GE turbine control systems.

Q: How many servo valve outputs does the board provide?
A: The TSVC provides two bi-directional servo current output channels.

Q: How many LVDT inputs are supported?
A: The board supports up to eight LVDT winding inputs for valve-position feedback.

Q: Does the IS200TSVCH1A support pulse-rate signals?
A: Yes. It provides two pulse-rate input channels, with compatible configurations supporting magnetic or TTL signal types.

Q: Which I/O hardware 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 to be used with the VSVO processor in the same manner.

Q: Can it be used in redundant turbine control systems?
A: Yes. The board supports simplex, dual, and TMR control configurations when used with the appropriate system architecture.

Q: What should be checked before replacing this board?
A: Verify the complete part number, assembly suffix, revision, terminal connections, PSVO/WSVO hardware, field wiring, and turbine control configuration.

Q: Is IS200TSVCH1A a current-production product?
A: It is listed as discontinued by at least one current distributor, so replacement availability is primarily through legacy, surplus, or replacement-stock channels.

Q: What safety precautions are required?
A: De-energize and isolate the turbine control cabinet and associated field circuits before replacement. Follow the applicable GE installation procedures, electrical safety requirements, and ESD precautions.

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