Operation of Special System Timers, Presignal, and PAS Operation of the Control Panel
NFS-3030 Operating P/N 51344:C 11/4/03 37
How the Panel Indicates a Presignal Alarm
When an initiating device participating in Presignal goes into alarm, the panel LCD displays a fire
alarm message. ( Refer to “Fire Alarm Event” on page 22.) If a second alarm occurs while the
Presignal timer is counting down, the control panel aborts the Presignal timer countdown and
activates all programmed outputs. The fire alarm LED flashes and the panel sounder pulses a steady
tone. The control panel latches until the alarm is corrected and the
SYSTEM RESET key is pressed to
reset the panel.
How to Respond to a Presignal Alarm
Once the Presignal timer has begun counting down, the operator has the duration of the countdown
time to respond to the alarm before the control panel automatically activates all outputs with ZF0 in
their zone map and CBE linkage to the alarm. The operator can reset the panel if the alarm is
determined false, or press DRILL to evacuate the building immediately.
PAS (Positive Alarm Sequence)
PAS (Positive Alarm Sequence), used in conjunction with Presignal, allows a 15-second time
period for acknowledging an alarm signal from a fire detection/initiating device. If the alarm is not
acknowledged within 15 seconds, all programmed outputs activate. If the alarm is acknowledged
within 15 seconds, the control panel will enter Presignal mode as described above.
The PAS Inhibit switch can be used to turn off the PAS delay timer when the control panel is
unattended.
Technical Manuals Online! - http://www.tech-man.com
To Next Page
Loading...
Need help?
General
