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Signal-10 Operation Principles
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INTRUSION ALARMS
The Signal-10 supports generating several different kinds of intrusion alarms depending on the Loop
Type setting specified while loop configuring:
General intrusion alarms (for alarm loops with the Type 4)
Intrusion and detector tampering alarms (for alarm loops with the Type 5)
Entrance alarms (for alarm loops with the Type 7)
Panic alarms (for alarm loops with the Type 11)
For loops of the Type 12 light indication depends on the type of programmed events.
Sound signaling is provided only for fire and intrusion alarm loops (not for auxiliary loops). The sounder
behavior depends on the most dangerous event which is detected by all the device alarm loops.
Table 8 (see the page 51) shows the behavior of the 1 – 10 LEDs of the device which indicates the cur-
rent statuses of the relative alarm loops, while Table 9 (see the page 52) describes the characteristics
of sound signals which are output by the device for some alarm loop statuses.
General Intrusion Alarms
The Signal-10 device can operate as an intrusion alarm control if at least one of its alarm loops is con-
figured with the Type 4. For such the loop the device can recognize the following statuses:
Armed
Arming Delay
Arming Failed
Disarmed
Intrusion Alarm
An alarm loop of the Type 4 is considered to be in Armed status if it has been armed and its resistance
is within the normal range (see Table 2. Alarm Loop Resistance Values for Different Loop Statuses’.)
If the alarm loop is configured with the nonzero Arming Delay parameter, while being armed this loop
has got Arming Delay status. If the loop is broken and the delay has not yet expired then no alarms are
produced.
When the delay has expired and provided the loop resistance is within the normal range, the alarm loop
is considered as Armed. Otherwise, if the Arming Delay has expired but the loop resistance is outside
the normal range then the alarm loop has got the Arming Failed status.
If the alarm loop is programmed with the Auto Rearming After Failing parameter being set on, it auto-
matically switches from the Arming Failed status to the Armed status when its resistance has come
back to the normal range for at least 3 seconds.