The GE IS200TDBSH2A is a simplex discrete I/O terminal board for the Mark VIe control system, providing 24 contact inputs and 12 Form-C relay outputs for turbine and balance-of-plant control.
Overview: the board terminates field wiring and interfaces with the Mark VIe I/O pack over IONet. Inputs are 125 V DC contact-sense; outputs are Form-C relays rated for alarm and trip functions. For high-availability applications, use the redundant TBxxH variant instead.