GE Industrial Solutions GPS 4848_100 Users Guide (dual rectifier shelf) - Manual (Page 62)

Galaxy Power System 4848/100 with Dual Rectifier Shelf
8 - 2 Circuit Boards Issue 5 September 2011
Overview, continued
Bay Interface Card Each cabinet has a Bay Interface Card (BIC) that attaches to the
cabinet’s terminal board (BLJ). The BIC provides controller access to
alarm monitoring, battery voltages, battery currents, and temperature
probes in the cabinet through the serial rectifier bus. The BIC also
provides connection of the system serial rectifier bus to the bay
rectifiers. See Figure 1-1.
Contactor Control
Board
Contactor control boards provide four functions:
• Monitor and report shunt voltage to the controller
• Monitor and report contactor status to the controller
• Operate the contactor based on controller commands
• Operate or block the contactor based on maintenance switch
settings