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9. Select Operating Mode
There are four Modes of Operation which can be selected, namely Simplex, Complex,
PLC and Spike
1. Simplex Mode
!
Typical application would be the entrance to premises, which is controlled by a guard
!
Raising and lowering of the boom pole is done via pushbutton or remote control
connected to the memory input (MI). The
Autolower feature
can be used to
automatically lower the boom pole after an adjustable
Autolower Time
In
Simplex Mode
, the MI input will have the following characteristics:
!
The input activates (the barrier responds) on the leading edge of the signal; in other
words, the moment the button is pressed
!
From the fully lowered position, pressing the button once will cause the boom pole to
raise. A second button press will result in the boom reversing direction. In other
words, the action is: press to raise, press to lower and, if the barrier is in a semi-
raised position, press to reverse - NB -The barrier cannot be stopped in a midway
position.
!
The NMI input operates exactly in the same way as MI when the SECTOR is in Simplex
Mode, but the input activates on the trailing edge of the signal, i.e. when the button is
released
!
In
Simplex Mode
you can use standard infrared safety beams or a loop detector to
prevent the barrier pole from being lowered onto a vehicle moving past the barrier.
However, the closing loop is always recommended in preference to beams as it
operates more reliably when used with barriers.
!
In this Mode of Operation, it will act purely as a safety loop and will not influence the
closing of the barrier. However, the loop can be made to function as a closing loop if
ILAC Mode is enabled.
!
ILAC Mode, which is comparable to PIRAC Mode as found on CENTURION gate motors,
causes the boom to auto-lower as soon as the inductive loop is cleared, i.e. the vehicle
moves off. This is a desirable action in high-security applications and is an effective
deterrent to tailgating.
2. Complex Mode
!
Typical application is any unmanned entrance, which makes use of any number of
different access control devices to raise the boom pole
!
In Complex Mode, the boom pole lowers the moment the vehicle has driven over and
cleared the closing loop, which is mounted below the boom pole
!
Access control devices, including proximity or card readers, keypads, remote controls,
etc., are connected to the memory input (MI). In this instance, more than in Simplex
Mode, the MI input can be seen as a “memory input” since it counts and stores the p
ulses received and the barrier will only close once the corresponding number of
activations and deactivations of the closing loop are received.
!
For example, say that someone presses the pushbutton three times to raise the boom,
then it will be necessary for a vehicle to clear the closing loop three times before the
boom will lower.
