GE IS200TDBSH2ACC Mark VIe Discrete I/O Terminal Board

GE IS200TDBSH2ACC is a simplex discrete contact input and relay output terminal board designed for GE Speedtronic Mark VIe turbine control system. It serves as the field signal interface for PDIO I/O pack, receiving contact feedback and outputting relay signals for turbine safety interlock control.

This board contains 24 group-isolated contact inputs and 12 Form-C relay outputs, with built-in surge and noise suppression circuits. Widely used in power, chemical and pulp & paper turbine control maintenance, spare replacement and control system retrofit projects.

Data Parameters

• 1. Brand: GE (GE Vernova).

• 2. Model: IS200TDBSH2ACC.

• 3. Product Type: Discrete I/O Terminal Board.

• 4. Application: GE Mark VIe Speedtronic gas & steam turbine control system.

• 5. Feature: 24 isolated DI, 12 Form-C relay DO simplex terminal board.

• 6. Characteristic: On-board noise suppression and surge protection.

• 7. Relay Rating: 5A per channel, max 250VAC.

• 8. Package: Plug-in rack mount PCB board.

• 9. Mounting: Installed inside Mark VIe turbine control cabinet.

• 10. Operating Temperature: 0℃ ~ +60℃.

Core Functions

• 1. Collect field contact signals including limit switches, pressure switches and valve position feedback.

• 2. Drive external solenoid valves and contactors via Form-C relay output channels.

• 3. Provide channel group isolation to reduce EMI interference and avoid ground loop fault.

• 4. Transfer discrete signals between field wiring and Mark VIe PDIO I/O pack backplane.

• 5. LED status indication for each channel and hardware self-diagnosis for fault detection.

Application Scenarios

• 1. Power plant Mark VIe gas/steam turbine control rack spare replacement.

• 2. Petrochemical plant large compressor turbine interlock cabinet maintenance project.

• 3. Pulp and paper mill turbogenerator automation control upgrade.

• 4. Heavy industry turbine safety I/O spare parts inventory backup.

• 5. Aging Mark VIe discrete signal terminal board renewal and retrofit.

FAQ

• 1. Q: What is GE IS200TDBSH2ACC?
      A: It is Mark VIe simplex discrete I/O terminal board for turbine control, used for digital contact input and relay output signal termination.

• 2. Q: How many input and output channels does it have?
      A: It has 24 group-isolated contact input channels and 12 Form-C relay output channels.

• 3. Q: Can it be hot swapped?
      A: Hot swap is not supported, please cut off control power before removing or installing this board.