Appendix—Binary
Configuration
Binary Configuration
Table 38: Binary configuration details
Binary input or output
BI 1
BI 2
BI 3
BI 4
Defrost
Function
Low temp detection
Condensate overflow
Occupancy
Fan status2
Defrost
Fan high
Fan Medium\Exhust
Fan low
Generic binary output/base board heat
Configuration
Normally closed
Normally closed
Normally closed
Normally open
Normally open
NA
Normally open
Normally open
Normally open
Normally open
Description
Closed: BIP 1 is Normal (no diagnostic)
Open: BIP 1 is Active (diagnostic)
Closed: BIP 2 is Normal (no diagnostic)
Open: BIP 2 is Active (diagnostic)
Closed: BIP 3 is Normal (Occupied)
Open: BIP 3 is Active (Unoccupied)1
Open: BIP 3 is Normal (Occupied)
Closed: BIP 3 is Active (Unoccupied)1
When the controller commands the fan on and the binary input remains open for one minute, BIP is normal (diagnostic).
When the controller commands the fan on and the binary input closes, BIP is active (no diagnostic).
When input is Open, BIP is Active (Defrost activated)
When input is Closed, BIP is Normal (no Defrost)
Energized: Fan high
Energized: Fan Medium\Exhust on
Energized: Fan low
Energized: Output on (energized)
1.The occupancy input applications vary for standalone and communicated instances. For more information, see Occupancy arbitration tables in the Appendix.
2.The fan status device is normally closed during normal fan operation. When the fan is off either from a fan failure or the controller commanding the fan off, the binary input device opens.
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