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Senstar LM100 configuration overview
Senstar LM100 Product Guide
Page 51
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If the Alarm Window Time lapses before the Event Count setting is reached, the Event Count
and Alarm Window are reset without triggering an alarm.
Intrusion detection
The Senstar LM100 system guards against three intrusion scenarios:
•
An intruder attempting to cut through the fence.
•
An intruder attempting to climb over the fence.
•
An intruder attempting to crawl under the fence by lifting the fence fabric.
In local control mode, the relay that signals an intrusion alarm resets automatically when the event
is over or when the relay Hold Time expires, whichever is longer. The relay Hold Time can be set
to values ranging between 125 mS and 10 seconds.
Cut detection
Cutting the fence fabric produces a high amplitude signal that exceeds the Threshold. The first
time the detection signal exceeds the Threshold, the Event Count is incremented, and the Alarm
Window time count begins. The Event Window time must lapse before another Event will be
counted. Each time the Event Count is incremented the Alarm Window time is reset. When the
Event Count reaches the specified value within the Alarm Window time period, the luminaire
reports a sensor alarm to the gateway. If a subsequent Event is not recorded before the Alarm
Window time runs out, the Event Count and the Alarm Window are both reset.
Climb detection
When an intruder attempts to climb over the fence, or lift the fence fabric to crawl under, a large
number of energy pulses rapidly occur causing the received signal to exceed the Threshold. When
the signal first exceeds the Threshold, the Event Count is incremented, and the Alarm Window
time count begins. Typically, during a climb or lift type intrusion, the received signal remains above
the Threshold as a result of the continued flexing and stressing of the fence fabric. The initial
contact with the fence activates the Event Window time counter. Each time the Event Window time
is reached, and the received signal strength remains above the Threshold, the Event Count is
incremented. Each time the Event Count is incremented the Alarm Window time is reset. When the
Event Count reaches the specified number within the Alarm Window time period, the gateway
reports a sensor alarm at that location.
Luminaire supervision
Luminaire supervision monitors the installation location and orientation of the head. Any change in
a luminaire’s location or orientation will cause a supervision alarm. Use the reset button in the
Head status field to set the head supervision to the current installation location and orientation
(see
). The luminaire’s operation and communication are supervised by the gateway.
Luminaire supervision conditions are reported as diagnostic conditions in the UCM’s Head Status
field. In Local control mode, an output can be configured to report luminaire supervision conditions
(see
). In Remote control mode, supervision conditions are reported over the Silver
Network.