Metasys IFC-1010, Раздел программирования технического руководства

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30 Programming—IFC-1010/2020 Programming
Once a module address is programmed by an NFPA listing selection as
defined in Table 5, that module address only can be removed from the
system by de-selection of that same listing. Selection of RCV disables the
Block Acknowledge function. RCV must be enabled for all Central Station
Receiving and Proprietary and Protected Premises receiving units.
Notes: Modules must be connected on the LIB SLC loop with the
appropriate addresses set in order to avoid trouble conditions.
NFPA modules selected must be in their normal state or
acknowledged prior to de-selection, otherwise trouble conditions
may not clear from the panel memory.
The pre-alarm function causes the Fire Alarm Control Panel (FACP) to
generate a trouble message when the chamber value of the detector has
exceeded 80% of the alarm threshold (determined by the sensitivity
selection of low, medium, high). Conditions that generate a trouble
message:
•
With pre-alarm enabled, the 80% condition must be present for at least
a 60 second period and indicates a
PRE-ALARM ALERT
message on
the FACP after that period.
•
With pre-alarm disabled, the 80% condition must be present for at
least a 26 hour period and indicates a
MAINTENANCE REQ
message
on the FACP after that period.
Note: This condition (detector exceeding 80% of alarm threshold) may be
due to a dirty detector. The detector should be inspected and
cleaned as necessary by an authorized service representative.
Failure to do so may result in a false alarm.
Pre-Alarm
Function
N21