System Overview
2-7
2.2. Subsystem
Power Distribution and Control
Interlock
In interlock loop, Interconnect Cable, Display Board, Collimator Control Board, Mainframe Control Board, Filament
Driver Board, KV Control Board and Power Distribution Unit Board compose a safety loop.
Once the interconnect cable between C-Arm and the Workstation is removed or any PCBs in C-Arm loose from
slot due to collision or other unexpected situation, the relay K4 (on Power Distribution Unit Board) will not be
energized so that the Mainframe can't be powered on. Workstation will boot up and just work in Review Station
status.
Power Distribution Unit Board
THEORY OF OPERATION
Power Supply Overview
The power of PDU board is driven by the main input power and the secondary side from main transformer
28VAC and 220VAC output.
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