Configured for servo valve control and feedback loops in GE Mark VI/VIe systems, the GE IS200TSVCH2A (IS200TSVCH2 Terminal Board) provides direct physical/electrical execution.

Hardware Specifications

Backplane Bus Communication and Firmware Compatibility

The IS200TSVCH2A serves as a specialized terminal board for interfacing with electro-hydraulic servo valves. It manages high-speed signal distribution from the I/O pack to the hydraulic actuators. The board supports deterministic I/O backplane bus communication velocity required for closed-loop valve positioning. Firmware flash compatibility is governed by the host I/O processor's versioning requirements; ensure the control logic supports the specific "2A" revision of the terminal board to maintain signal integrity and proper loop gain calibration. I/O density scaling allows for the connection of multiple servo channels while minimizing noise coupling between parallel control loops.

Frequently Asked Questions

Q: Can the IS200TSVCH2A be replaced while the system is under power?

A: Yes, the board supports hot-swap operations within the Mark VI/VIe rack, provided that the associated servo control loops are placed in a null or manual position at the operator interface to prevent erratic hydraulic actuator movement.

Q: How is signal cross-talk managed on the servo interface?

A: The board utilizes differential signal paths for feedback inputs and localized filtering to mitigate electromagnetic interference, ensuring that high-frequency control signals remain distinct from power-level actuator outputs.

Field Installation Guidelines

• Verify that the terminal board is properly seated on the backplane connectors before engaging the captive screws to ensure a stable electrical connection.
• Connect servo valve feedback signals using shielded twisted-pair cabling. Terminate the cable shields to the designated ground lug on the board to prevent common-mode noise on the feedback circuit.
• Ensure hydraulic actuator wiring is properly identified and labeled before insertion into the screw terminals to prevent polarity reversal, which could lead to incorrect valve directional control.
• Check the electrical loop resistance of the servo coil during installation to ensure it aligns with the system specifications defined in the Mark VIe control manual.
• Prior to commissioning, inspect all terminal connections for debris or metal shavings that could cause short circuits within the high-density signal block.