Specifications

2–11
Principles of Operation
Control Panel
The control panel consists of indicator lamps, LEDs, contact switches, and a
liquid crystal display (LCD).
The control panel processes and sends switch closure information to the
controller board and receives status information.
Control Panel
Common Controller Board (CCB)
Switch
Status
Control Panel Assembly
Data
Control
Closures
Switch
Closures
Circuit Board Assembly
Figure 2–9. Control Panel Block Diagram