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4.19 Positive Alarm Sequence
PAS (Positive Alarm Sequence) option will program an initiating device to delay panel
activation (including alarm relay and communicator) for a period of 15 seconds. Zone 97,
however, will activate immediately and may be used to connect a signaling device to
indicate PAS activation. 'RQRWDVVLJQ=RQHWRD1RWLILFDWLRQ$SSOLDQFH&LUFXLWZKHQ
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When a detector or monitor module triggers an alarm, the onboard piezo sounds
immediately, but the NACs are prevented from activating for 15 seconds. This inhibit
time is factory set and cannot be changed. Pressing the Alarm Silence or Acknowledge/
Step key during the 15 second inhibit time will silence the piezo sounder and start a timer
which prevents activation of NACs for an additional time duration which can be user
programmed for up to three minutes. After the programmed delay, the NACs will activate
if the source of the alarm is not cleared. Note that if a second alarm occurs during either
time delay, the alarm will be processed immediately, causing activation of the appropriate
output zones. The events which occur upon PAS activation are as follows:
✓ onboard piezo sounds immediately
✓ control panel LCD display will indicate a presignal event and the active point
✓ control points programmed to Zone 97 will activate
✓ annunciators (if enabled) will sound the local piezo, and pulse the alarm LED and
zone LED
✓ outputs (NACs and control modules) of associated zones will be inhibited from
activating for a factory set duration of 15 seconds
✓ pressing the Alarm Silence or Acknowledge/Step key will start a timer which
inhibits output activation for additional time delay of up to three minutes which
is user programmable
✓ second alarm occurring anytime during either time delay will cause immediate
activation of all associated outputs
PAS does not affect monitor modules programmed as waterflow, supervisory, process
monitoring or remote switches. PAS operation requires the approval of the local Authority
Having Jurisdiction.
Note that the PAS BYPASS monitor type code, when activated, will inhibit the PAS
capability until the PAS BYPASS monitor is deactivated. While PAS is inhibited, signaling
devices will immediately place the control panel into alarm. This feature may be
employed by wiring a normally open device, such as a switch, to a monitor module which
has been programmed for PAS BYPAS S.