• The magnetic loops must be positioned as shown in fig. 5:
only if positioned in this configuration, the loops are able to
manage the vehicle count in a correct way and to control
the re-closure of the barrier exclusively after the vehicle
has transited. However the dimensions can be adapted to
the lane width and to the type of vehicles to detect: fig.5
shows the loops to be used in the event of a lane width of
2.5 m for cars and vans.
• The Token Acceptor and the Barrier must be installed on
an island lifted by approx.
15 cm
. with respect to the
street surface in order to protect them against impacts
during vehicle movement. If this is not possible, install
suitable protective structures around the base of both
housings.
.
4.3. REALIZING THE MAGNETIC LOOPS
The magnetic loops can be realised in two different ways:
laying the cable directly in a chase made in the existing
pavement or, this is the best solution, realising a cable duct in
PVC before the pavement is made.
In both cases, the cable must be laid not over 5 cm from the
surface and not less than 15 cm from covers or other metallic
objects.
In case of a cable duct, you can use a normal single-pole cable
with 1.5 mm² section. On the contrary, the cable directly laid in
the chase must have the same section but with double
insulation (for the realisation of the chase, see chapter 4.4.1.).
The loop must be realised with a single cable without making
any joints. Both ends of the cable must be twisted each other
(
at least 20 times per meter
) for the whole section from the
loop to the Detector terminal board.
The number of windings of the loops is 4.
5
POSITIONING LAYOUT OF ENTRY/EXIT LANE DEVICES
Foundation plate for Token
Acceptor GRS-02
Foundation plate for Barrier 620 rapid
(RH version)
Sense of direction
Presence loop
Transit loop
Loop made of 4
windings
ENGLISH
ENGLISH
