54 CNT-SVX08F-EN
Troubleshooting
Occupancy Binary Input
The binary input on the controller is used as an occupancy input if configured as SCC. For stand-
alone controllers (any unit not receiving a communicated occupancy request, typically from a
building automation system), the occupancy binary input determines the occupancy of the unit
based on the hardwired signal. Normally, the signal is hardwired to a binary switch or time clock.
For controllers that receive a communicated occu
pancy request from a building automation
system, the hardwired occupancy binary input is used with a communicated occupancy request to
place the controller in either occupied mode or occupied standby mode.
If neither the hardwired binary input nor a communicated request is used to select the occupancy
mode, the
controller defaults to occupied mode.
Table 27, p. 54 shows the occupancy result of the hardwired binary input to the MP501. Table 28,
p. 55 shows the occupancy result of the hardwired input, network inputs, or ON
/CANCEL buttons.
Table 27. Occupancy sensor arbitration
nviOccSensor Binary Input Configuration Binary Input Result
Not valid Generic (not used) Does not matter Occupied
Not valid Occupancy Open Occupied
Not valid Occupancy Closed Unoccupied
Occupied Does not matter Does not matter Occupied
Unoccupied Does not matter Does not matter Unoccupied
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