Service manual

Always On UPS Systems Inc
63
23. COMMUNICATIONS INTERFACE (3R PCB)
This is the local and remote Operator interface for the entire UPS system.
This controls the local front panel Operator interface by utilizing information from the Main Control PCB and translating and sending
that to the front panel display PCB’s. Also receives the local Operator commands from front panel display PCB’s and relays these to
the Main Control PCB.
It also provides remote communication links via multiple protocols for operator monitoring and control.
Figure 23.1
Location of 3R PCB in the PCB Module