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Presignal and Positive Alarm Sequence (PAS) Operation
A.5.5 How to Respond to an Alarm with Presignal Delay Timer
(PAS selected)
If an alarm occurs with a Presignal Delay Timer (60-180 seconds) and PAS selected, the control
panel displays an Alarm screen that shows the type of device and the SLC address of the device
causing the alarm. When an alarm comes from an initiating device with a CBE list that includes F0
(with PAS selected), the control panel delays the following outputs:
•
System Alarm relay
•
TM-4 Polarity Reversal Alarm output
•
TM-4 Municipal Box output
NOTE: These outputs do not delay for Presignal operations without PAS selected.
If a second alarm occurs during the Presignal Delay Timer, the control panel aborts the Presignal
Delay Timer and activates all programmed outputs.
A sample Alarm screen for a monitor module:
Status banner
ALARM
The
FIRE ALARM
until the alarm is corrected and you press the S
have 15 seconds to acknowledge the alarm or the control panel automatically activates all outputs
programmed to F0. If you acknowledge the alarm within 15 seconds, the control panel increases the
delay time to the full Presignal Delay Timer (60-180 seconds). You have the duration of the
Presignal Delay Timer to respond to the alarm before the control panel activates all outputs
programmed to F0. You can take the following actions:
•
To increase the delay to the full programmed Presignal Delay Timer, press the
ACKNOWLEDGE
changes from flashing to steady.
•
To abort the Presignal Delay Timer, press the
•
To manually activate all outputs programmed to F0, press the
screen appears, the panel sounder pulses and the
steady. The Manual Evacuate screen and Alarm screen display alternately at 3-second
intervals.
If the Presignal Delay Timer reaches its programmed value, without operator intervention, the
control panel activates all outputs programmed to F0.
NFS-320/E/C, NFS-320SYS/E Operations Manual — P/N 52747:E1 06/16/2011
Type Code
A L A R M : M O N I T O R
Z 0 0 4
Figure A.10 Sample Alarm Display Screen
LED flashes and the panel sounder pulses a steady tone. The control panel latches
/
SCROLL DISPLAY
MONITOR
M O D U L E A D D R 1 M 1 4 7
1 0 : 1 4 A 0 1 1 5 0 8 1 M 1 4 7
R
key to reset the control panel. You
YSTEM
ESET
key. The panel sounder goes silent and the
SYSTEM RESET
FIRE ALARM
Special Zone Operation
SLC address of the
activated initiating device
FIRE ALARM
key.
key. The Manual Evacuate
DRILL
LED changes from flashing to
LED
57
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