The GE IS200TDBTH2ACD is a Programmable Discrete Input/Output (PDIO) terminal board designed for the GE Mark VIe Speedtronic turbine control system. It functions as the critical physical interface between field-mounted discrete devices and the Mark VIe distributed I/O architecture. This board is engineered for TMR (Triple Modular Redundant) applications, ensuring high reliability in turbine control and protection functions.
| Model | IS200TDBTH2ACD |
| Discrete Inputs | 24 channels (group-isolated) |
| Relay Outputs | 12 Form-C |
| Input Voltage Range | 16–32 V DC |
| Input Current Limiting | 2.5 mA |
| Relay Contact Rating | Up to 5 A |
| Operating Temperature | -30 degC to +65 degC (-22 degF to +149 degF) |
It acts as a terminal interface for digital signals (on/off states) between external sensors and the turbine control system, providing 24 group-isolated contact inputs and 12 Form-C relay outputs.
No. The IS200TDBTH2ACD is designed for redundancy and typically requires three PDIO packs for Triple Modular Redundant (TMR) configurations.
The board supports nominal external wetting voltages of 24 V DC, 48 V DC, or 125 V DC.
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