
SIGNAL-20P APPLICATION
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− "Intrusion Alarm"
− “Loop Trbl Short”
− “Tamper Alarm”
"Armed", "Arm Delay", "Arm Failed" and “Intrusion Alarm” statuses
are similarly to the corresponding statuses of the type 4 loop as mentioned
above in 5.3.1 section.
Alarm loop transits from “Disarmed” to “Intrusion Alarm” mode for at
least 300 ms when detector tamper contacts have opened. When the de-
vice case has closed the alarm loop returns the “Disarmed” status, the re-
covering time being equal to 15 s (tamper contacts have to be closed).
Alarm loop transits from “Disarmed” to “Loop Trbl Short” mode for at
least 300 ms in case of loop short failure. After short failure elimination the
alarm loop returns the “Disarmed” status, with the recovering time being
equal to 3 s (the loop resistance has to be within normal range).
5.3.3 Entering alarm mode
The device operates in entering alarm mode is any loop type is set to
7. The supplied statuses are as follows:
− "Armed"
− "Disarmed"
− "Arm Delay"
− "Arm Failed"
− "Entry Alarm"
− "Intrusion Alarm"
"Armed", "Arm Delay" and "Arm Failed" statuses are similarly to the
corresponding statuses of the type 4 loop as mentioned above in 5.3.1 sec-
tion.
The loop transits from “Armed” to “Entry Alarm” status in case of:
− Loop breaking duration has exceed 70 ms and “Integrating 300 ms”
parameter is set off
− Loop breaking duration has exceed 300 ms and “Integrating 300
ms” parameter is set on
− Loop resistance has skipped more than 10% of its value, “10% De-
viation Blocking” parameter being set off
The loop transits from “Entry Alarm” to “Intrusion Alarm” mode upon
“Intrusion/Fire Delay” has expired.
The “Intrusion Alarm” status is identical to those described in 5.3.1
section.
5.3.4 Alarming mode
The device operates in alarming mode if any connected lop type is
set to 11. The supplied statuses are as follows:
− "Armed"
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