DS200TCQCG1B

DS200TCQCG1B is an Analog IO Expander Board manufactured and designed by General Electric as part of the Mark V LM Series used in the GE Speedtronic Control System. Additional analog signals read from the terminal boards of the I/O cores are scaled and conditioned by the Analog IO Expander board (TCQC). Excitation for LVDT and LVDR is provided via the TCQC board. On the TCQC board in the core is the IONET termination for and. That IONET termination is on the TCQC if the optional 21> is installed. The TCQC board scales and conditions the mA input for the megawatt transducer signal before writing it via the 19PL connector to the STCA board. The TCQC board scales and conditions the pulse rate inputs. The high-pressure shaft speed signals and occasionally the liquid fuel flow signals are scaled on the TCQC board and sent to the TCQA board using the JE connector in the "R1" core in the majority of situations. Through the JE connector, the STCA board and TCQC board exchange generator and line signals.

TCQC CONFIGURATION:

Hardware: The servo output current range is set using the TCQC board's first 16 hardware jumpers. The source output resistance is chosen by the odd-numbered jumpers, while the feedback scaling is chosen by the even-numbered jumpers. For servos one through four, hardware jumpers 25 through 36 allow for additional feedback scaling possibilities, resulting in a maximum current range of +/- 240 mA. For card tests, BJ17 configures the RS232 port. The stall timer enable is BJ21. Oscillator enables the factory test is BJ22. There is no use for BJ23 or BJ24. The proximity transducers' P15 and N15 supply are restricted by BJ18 and BJ20. For some applications, hardware jumpers JP38 and JP39 control the magnetic pickup gain for signals indicating liquid fuel flow.

TCQC SERVO VALVE REGULATOR OUTPUT CIRCUITS:

The TCQC board jumpers scale the current from the TCQA board before sending it to position the servo valves. On the TCQC board, hardware jumpers are utilized to set the reference feedback and output current range. The servo clamp relay and the suicide relays are located on the TCQC board. By passing the servo valves, the signal is driven to the ground by energizing the suicide relays. The servo valve can then drift to the bias position as a result. The servo valve receives a positive current when the servo clamp relays are activated. The suicide relays are activated by a signal from the CSP that is written to the TCQA board and then transmitted to the TCQC board.