There are two types of
Door Sensor Alarm:
•
Continuous Door Open
•
Average Door Open
Here a duration between 0 and 60 minutes can be set for a
Continuous Door Open
alarm. If
the door remains open for the set duration then the alarm is triggered.
For this alarm type, two parameters need to be set. Firstly the
Average Door Period
must be
set. This is the time over which the
Average Door Open
time is calculated. Usually this
would be set to 60 minutes, but can be any period from 1 to 60 minutes. Next the
Average
Alarm Period
trigger needs to be set. This is the cumulative time that that door was left
open, during the
Average Door Period
. Once reached the alarm is triggered.
Example:
For this example
Average Door Open
alarm, the parameters have been configured as
follows:
•
Average Door Period
is set to 60 minutes
•
Average Alarm Period
trigger is set to 20 minutes
The
Door Sensor Alarm
will trigger if the door has been open for a cumulative minimum
period of 20 minutes, during the past (rolling) 60 minutes. This could be any number of
smaller door open periods that total 20 minutes, bearing in mind the resolution of the
Door
Sensor
open periods which is five seconds.
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