Product Description

The DS200DDTBG2ABB is an LCI Auxiliary I/O Terminal Board.  This PCB  was created as a component for the Mark V system from GE.  The Mark V was the second of the Speedtronic gas and steam turbine management systems to offer triple redundant back-ups on critical controls and protection parameters. It also includes features such as built-in diagnostics, online maintenance, and a direct sensor interface.

The DS200DDTBG2ABB is a high voltage board.  Its function is to create system connections for auxiliary I/O signals.  The board receives power from and is connected to the DS200ADMA board, which is a daughterboard module located on the DS200DSPC digital signal processor control board.

The DS200DDTBG2ABB is built with multiple inputs and outputs.  This includes high voltage AC inputs (2,) high current signal inputs (6,) low current signal inputs (3,) 4-20 mA current loop inputs (up to 2,) and undedicated voltage inputs.  The current loop inputs are reassigned from the CT or LEM input channels using jumpers. The board also has four buffered analog outputs and two 4-20mA current outputs. The board also has sixteen digital Input/Outputs.  

The DS200DDTBG2ABB is built with 33 TP test points, used for signal measurement.  The board has 17 LEDs (DS1-DS17.) The board includes twelve jumper switches with 3 positions each.  The factory setting for these switches is on the 1-2 position. It has two transformers, four relays, and fourteen transistors. The DS200DDTBG2ABB uses capacitors and resistors. It also has eight varistors and fifteen resistor network arrays. The board has five terminal strips that vary from three screw positions to thirty-six screw positions and has many integrated circuits, including a chip with board identification and hardware revision information.

More information on the board functions, application data, features, and installation can be found in GEI-100219, a publication from General Electric.