Operation
P/N 06-237058-001 4-17 February 2012
4-10.3.5 SPECIAL ALARM CONDITIONS
Two special alarm states are positive alarm sequence and alarm verification.
4-10.3.5.1 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. Refer to NFPA
72, National Fire Alarm Code (latest edition) for further details. Refer to the ARIES NETLink
Configuration Tool User’s Guide, P/N 06-237059-001, to configure a smoke detector for PAS
operation.
The PAS State occurs when the ARIES NETLink 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 NETLink remote configuration
software.
Note: For systems configured with Positive Alarm Sequencing, a manual override must also be
employed (by having a manual pull station located near the ARIES NETLink panel).
Figure 4-26. 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 Remote Display Control Modules
and Remote LED Annunciator Modules), if applicable
• The PAS message is communicated via the RS232 ports
4-10.3.5.2 What to Do When PAS Occurs
You must press the <SYSTEM 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 the opening section
of this chapter. The internal buzzer will silence and the display will change to the appearance in
Figure 4-27 if the <SYSTEM ACKNOWLEDGE> Key is pressed within 15 seconds of receipt of the
PAS report. PAS acknowledgments are logged.
WARNING
Do not use the following special smoke-detector configurations for releasing applications.
L1:100 PAS ON PHOTO
FIRST FLOOR LIBRARY
DISCHARGE-00 CNTDN-00 ABT-00 ALM-00
PREALM-00 AVCNTDN-00 SPV-000 TBL-000
PAS Indication On (Smoke Detectors only)
Device-Specific
Custom Message
SLC Loop
Number 1
Device
Address 100
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