4020 OPERATORS MANUAL Page 33
Document No: 4020-M010 1st February, 1997 Issue 2.0
8.5 OPERATION OF NON-LATCH AS1668 ZONES
Zones programmed as non-latching AS1668 zones must be in continual alarm before
they operate their associated outputs. When operated, the outputs will track the alarm
input and will be de-activated when the monitoring zone has been in a non-alarm
condition for a period of either 30 or 60 seconds. Refer to the appendix for more
detailed description of AS 1668 zone operation.
8.5.1 Displaying the Status of AS1668 Zones
Zones configured with AS1668 delays will not bring-up an alarm condition nor will they
be entered into the alarm list when they are in alarm.
To display the status of a AS1668 zone use the following steps:
STEP 1 Press the INPUT(7) key to display the zone input list and use the +/- keys
to scroll through the list until the zone is displayed.
Zn6 Level 4 East - Supply Air N/L30
Normal # 1 of 3 11:27:00
If an alarm is present on the zone the displayed status will alternate
between ALARM and NORMAL condition, tracking the state of the
detector zone as it is continually being reset and then checked for an
alarm condition.
7
INPUT
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