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3-2.5.5
Do not use the following special smoke-detector configurations for releasing
applications.
WARNING
3-2.5.5.1
3-2.5.5.2
August 2013
SPECIAL ALARM CONDITIONS
Two special alarm states are positive alarm sequence and alarm verification.
Positive Alarm Sequence
The Positive Alarm Sequence (PAS) is designed to give on-site personnel
time to investigate a fire-alarm report from a smoke detector and to
prevent an evacuation signal from being generated in the event of a
spurious fire-signature detection or an inconsequential fire-alarm report.
See Chapter 6 of NFPA 72, National Fire Alarm Code, 2002 Edition, for
further details. Refer to the ARIES User's Programming Guide to configure
a smoke detector for PAS operation.
The PAS State occurs when the ARIES Control Unit receives an emergency
signal from a smoke detector configured for PAS.
The upper line of the LCD display shows the event by the device address,
the change of state, and the device type. The lower line indicates the up-
to-40-character message assigned to the alarm-initiating device using the
ARIES configuration program.
Device Address 200
200
FIRST FLOOR LIBRARY
Device-Specific
Custom Message
Figure 3-17. Typical PAS Message Display
The following actions also occur when any PAS event is reported:
•
The internal buzzer pulses
•
The PAS event is stored in the event log
•
The PAS message is transmitted to peripheral devices such as
RDCMs, if applicable
•
The PAS message is communicated via the RS-232 ports
What to Do When PAS Occurs
You must press the <ACKNOWLEDGE> Key within 15 seconds of receipt of
the PAS report to prevent a PAS condition from changing to an alarm
condition as described in Paragraph 3-2.5.5.1. The internal buzzer will
silence and the display will change to the appearance in Figure 3-18 if the
<ACKNOWLEDGE> Key is pressed within 15 seconds of receipt of the PAS
report. PAS acknowledgments are logged.
PAS Indication On (Smoke Detectors only)
Device Type Reporting PAS On
PAS ON
PHOTOELECTRIC
3-104
P/N 06-236530-001
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