GE IS200VSVOH1B

Overview

Designed for GE Mark VI turbine control applications, the IS200VSVOH1B servo control module helps regulate electro-hydraulic actuators used in fuel and steam valve systems. It combines servo output control with position feedback processing to support accurate valve movement and stable turbine operation.

The module is an important part of the control loop, connecting controller commands with field actuator responses. Its performance depends on correct configuration and compatibility with the associated terminal boards and feedback devices.

Main Functions

• Controls up to four electro-hydraulic servo valves.
• Processes valve-position signals from linear variable differential transformers (LVDTs).
• Provides servo control functions for turbine valve regulation.
• Supports compatible Simplex and Triple Modular Redundancy (TMR) architectures.
• Provides status indications to assist maintenance personnel with fault diagnosis.

Hardware and Integration

The module uses a VME rack-mounted circuit board design. Its electronic circuitry processes control signals, while dedicated connectors link it to compatible terminal boards and other Mark VI components. The associated field interface supports servo signals and valve-position feedback.

Correct integration is essential. The terminal-board type, cable arrangement, system configuration, and hardware revision should all be checked before replacing an existing unit.

Operating Information

The following details summarize its principal characteristics:

• Manufacturer: General Electric
• Series: Mark VI
• Module category: Servo control
• Primary function: Electro-hydraulic valve regulation
• Feedback method: LVDT
• Control capacity: Up to four servo channels
• Mounting method: VME rack installation

Detailed electrical ratings and operating limits should be confirmed against the applicable manufacturer documentation.

Industrial Applications

Typical applications include turbine control in power plants, steam valve positioning, fuel valve regulation, and industrial facilities that rely on compatible GE turbine automation systems. The board helps the control system translate operating commands into coordinated actuator movements.

Replacement and Service Recommendations

When a control fault occurs, inspect the complete servo loop rather than assuming the circuit board is responsible. Terminal boards, field wiring, actuator coils, feedback sensors, and system configuration may also affect performance.

For replacement projects, confirm the complete part number and revision before ordering. We provide industrial automation spare parts to support equipment maintenance, repair, and lifecycle management. Contact us for availability, product condition, and compatibility checks.