The GE IS200TDBSH2ACC, also cataloged as the IS200TDBSH2ACC Simplex Contact Input/Relay Output Terminal Board, is part of the Mark VI control platform. It provides 24 group‑isolated contact inputs and 12 Form‑C relay outputs, supporting simplex I/O processing for distributed turbine and process control. The board mounts on DIN‑rail and uses surface‑mount technology with integrated noise‑suppression components.
Within Mark VI architectures, the TDBSH2ACC interfaces through deterministic Ethernet‑based communication via the PDIO I/O pack. The PDIO connects through a D‑type connector and provides one or two network paths to the controller. I/O density scaling is supported through option cards, while firmware flash compatibility ensures synchronized updates without interrupting contact input or relay output behavior.
Frequently Asked Questions (FAQ)
Q: Does the TDBSH2ACC support redundant (TMR) operation? A: No. It is a simplex board. Redundant operation is handled at the controller and network level through PDIO.
Q: What wetting voltages can be used for contact inputs? A: The board accepts externally supplied 24, 48, or 125 VDC wetting voltages.
Q: Are the relay outputs protected against electrical noise? A: Yes. Both contact inputs and relay circuits include noise‑suppression components to reduce surge and high‑frequency interference.
