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8.3 - AUTOMATIC RISING MODE
The minimum configuration of an automatic high security bollard with automatic rising mode consists of the
following:
•
One or more automatic bollards
equipped with integrated flashing light and acoustic warning signal (define
flashing light and acoustic warning signal depending on the system, if necessary).
•
A control unit
with radio receiver and remote control (defined the rrspective number).
•
A safety inductive detector
with 2 induction loops.
•
One set of traffic lights
(red + green) for each passage direction.
The bollards are in the up position in normal operation to block passage. The integrated flashing lights flash
constantly. The traffic light illuminates red.
The bollards lower if a corresponding command is given in order to allow passage. An acoustic warning signal
sounds until the bollards are fully lowered (ground level).
If the bollards are fully lowered (the position of each bollard is monitored by a sensor), the control unit switches the
integrated flashing light off and the acoustic warning signal falls silent. The traffic light switches from red to green. The
passage is clear
Attention: the condition AUTOMATIC BOLLARD NOT LOWERED WITH GREEN TRAFFIC LIGHT is not
technically possible
.
If a passing vehicle is still located above the bollards or within close proximity to them, the 2 induction loops (one
before and one after the bollards) are active and prevent the bollards from rising.
If a vehicle has passed through and there is no other vehicle in the immediate vicinity, the induction loops are no
longer active. The traffic light switches from green to red. The integrated lighting strips and the acoustic warning
signal are activated immediately after the command. The bollards start rising after approx. 4 seconds. The passage
is blocked.
The bollards stop and return to the lowered position (reverse command) if another vehicle is detected over the
induction loops during rising. The point of passage can only be passed again when the traffic lights change from red
to green.
Following this, the bollard system reacts as previously described.
If a pedestrian steps on a bollard during the rising phase, the safety pressure switch detects the presence of a weight
and immediately interrupts the rising phase and makes the bollards lower to down position (inversion control by
safety pressure switch).
After several inversion controls, by loops or pressure switch, the situation is as described above, when bollards are in
down position green sector turn on: instead red sector turns on when the vehicle has passed by crossing, then
bollards start rising. If another vehicle stops over the loops, theygive a lowering control.
After giving the corresponding command to lower the bollard, the bollard lowers and waits in this position for a vehicle
to pass through. If a vehicle does not pass through within 30 seconds of reaching the lowered position, the bollard
automatically returns to the up position again.
As soon as the bollards are in the up position, the integrated flashing lights start to flash constantly, the acoustic
warning signals fall silent and the induction loops are no longer active. The traffic light switches from green to red. The
bollards also remain in the up position if a vehicle approaches to pass through. Passage is only enabled once a
corresponding command is given.
DPT280
UK
