GE Industrial Solutions GPS 4848_100 Users Guide (dual rectifier shelf) - Manual (Page 61)

Galaxy Power System 4848/100 with Dual Rectifier Shelf
Issue 5 September 2011 Circuit Boards 8 - 1
8 Circuit Boards
Overview
Function Circuit boards (sometimes referred to as “cards” or “circuit packs”) are
included in bays, battery connection panels, and dc distribution panels
to provide data required by the controller and to control devices such as
contactors and lamps.
Terminal Boards Terminal boards are used to provide shunt voltage data to the controller,
where it is used to calculate current. Data from the terminal boards
located on the battery connection panels are used to calculate battery
current; data from terminal boards located on the dc distribution panels
are used to calculate load currents.
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.