Circuit Boards; Overview - ABB GPS4827 User Manual

11. Circuit Boards

Overview

Function
Circuit boards (sometimes referred to as "cards") are included in the battery connection and dc
distribution panels to provide data to the controller.
Terminal Boards
Terminal boards are used to provide shunt voltage data to the controller, where it is used to calculate
current. Terminal boards located on the battery connection panels provide data that is used to
calculate battery current; data from terminal boards located on the dc distribution panels is used to
calculate load current.
Alarm Boards
Alarm boards perform two functions:
• monitor panel functions and activate local indicators when faults occur on the panel
•
provide alarm data to the controller
Alarm/Terminal Boards
Alarm/terminal boards combine the functions of alarm boards and terminal boards.
BLJ Terminal Board
The BLJ terminal board is located inside the cabinet door. The BLJ is the termination point for all signal
cables in each cabinet and between cabinets.
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
Millennium Systems
Every cabinet in a Galaxy Power System has a Bay Interface Card (BIC). The BIC provides controller
access to alarm monitoring, battery voltages, battery currents, and temperature probes in the cabinet
through the serial rectifier bus.
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