Comander Perimeter Security System
Engineering and Installation Manual
Page 59 of 72
5.4.3 Single Gates Using Gate Loop Kit and Gate Bypass Switch
When a section of the perimeter contains a gate which needs to be isolated from the
system, a Gate Loop Kit GDGLK and Gate Bypass Switch GDGBS should be used.
The gate loop kit provides a flexible feeder cable to connect a loop of Interceptor cable
mounted on the gate, in series with the sensor running along the fence, and a feeder
cable connection to allow the sensor cable run to continue on the other side of the
gate. The gate bypass switch allows for the sensor cable on the gate (and the first 2m
of fence either side of it) to be isolated from the circuit to avoid alarms caused by the
operation of the gate.
Note how the Interceptor cable on the fence is configured either side of the gate posts
to improve the detection as described above.
If there is a requirement to control the bypass operation remotely, a relay-operated
version of the Gate Bypass Switch is available. This allows an operator in the control
room (or even an automatic time-controlled system) to switch the protection of the
gates on or off as required.
5.4.4 Double Gates Using 2 Gate Loop Kits
Double gates require TWO of the gate loop kits, which in turn removes the need for the
separate junction box on the far side:
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