DS200QTBAG1ADC | General Electric Digital Contact Terminal Board

DS200DTBAG1A is a Digital Contact Terminal Board manufactured by General Electric as part of the Mark V LM Series used in gas turbine control management systems. Q11, Q21, and Q51 are the locations of the Contact Input Termination Module (DTBA). The first 46 contact inputs in the same digital core are connected to TCDA through DTBA. To enable fail-safe contact input functionality, the inputs can be configured in the TCDA IO Configuration to invert the contact sense. JY receives 125 V dc power from the DTBA board. The TB2 terminal board allows the excitation voltage for contact inputs DTBA and DTBB terminal boards in the digital cores to be 125 V dc from core or 24 V dc from core. Implementation of the desired contact input excitation option is done at the factory.To provide a fuse isolated and current limited interrogation voltage for the contact inputs, the Mark V LM controller draws either 12