Vehicle drives over
free-exit inductive loop
Gate
Free-exit facility activates gate to open
Free-exit
inductive loop
FIGURE 15
FIGURE 16
4.1.5. Free-exit Opening
The Free-exit Opening allows
visitors to exit townhouses, estates,
factories or oce parks easily.
An inductive ground loop is mounted
under the driveway inside the
property a short distance away from
the gate. The output of the inductive
ground loop detector is connected to
the free-exit input on the controller.
When a vehicle drives over the loop,
a detector senses the metal in the
vehicle and activates the free-exit
function which opens the gate.
The ground loop cannot be activated
by a person or any nonmetallic
objects and can be set to only
activate if it detects a large amount
of metal.
Free-exit never initiates a closing
cycle so the Autoclose function must
be enabled in order for the gate to
close.
If the gate is already open or
opening, triggering the free-exit
input will have no eect other than
to reset the Autoclose timer. If the
gate is closing, triggering the free-
exit input will immediately stop and
re-open the gate.
An infrared beam can be used
instead of an inductive ground loop,
but the beam will be activated if
a person (or any object) moves
through it, so this option is typically
less secure.
Please contact Centurion Systems (Pty) Ltd for more information on whether a ground
loop or infrared beam is better suited to your needs.