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•
Devices configured as alarm inputs display a pre-alarm condition on the shared display
and on the alarm zone status indicator.
•
Restoring the pre-alarm condition clears the status. If the input goes from pre-alarm to
alarm, the pre-alarm status will be replaced with the alarm status for the input.
•
Devices configured as alarm inputs display an alarm condition on the shared display and
on the alarm zone status indicator.
•
Once an alarm input is in alarm the alarm condition is latched until system reset
(changes in status from alarm to pre-alarm or to normal are ignored).
5.2.2
Supervisory Inputs
Devices can be configured as latching or non-latching supervisory inputs. Any un-bypassed
supervisory input entering alarm activates the common supervisory sequence.
Common Supervisory Sequence
•
Updates un-bypassed relay, signal, and strobe outputs based upon their configuration.
•
Activates Supervisory zone status indicators associated with the input.
•
Supervisory input activations display as the second highest priority on the shared display
in the common queue.
•
Devices configured as supervisory inputs display as supervisory conditions on the
shared display and on the supervisory zone status indicator.
•
Restoring the non-latching supervisory input returns all outputs correlated to the input,
that are not correlated to another active input, to normal.
•
Zone display indicators update announcing the input is no longer active and removes the
message from the shared display common queue.
•
If there are no other active supervisory inputs the common supervisory condition will be
restored.
Latched supervisory inputs operate the same as non-latched supervisory inputs with one
exception:
•
A normal to off-normal status change indication shall be latched and only manually
resettable at the control unit or display and control centre.
5.2.3
Building/Property Safety (for ULC) Input
Building/Property Safety Inputs may include but are not limited to: fan status, dampers,
motors, elevators, telephones, etc.
Building/Property Safety Inputs may be programmed to LED Indicators. The input status will
activate the LED as configured.
•
Building input activations display as the third highest priority on the shared display in the
common queue. They are lower than supervisory and higher than troubles.
•
May also be programmed to relay, signal, and strobe outputs.
Caution:
Correlating signal and strobe devices to building/property safety inputs
requires the approval of the AHJ and are not to be used for fire events.
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