WG20 Instructions 11
1 Select the position of the two elements that make up the photocell (TX
and RX) observing the following directions:
•
Position them at a height of 40-60 cm from the ground, on both
sides of the area to be protected, on the street side of the installation and
as close as possible to the edge of the gate, no farther than 15 cm.
•
Point transmitter TX towards receiver RX, with a maximum tolerance
of 5°.
•
In the selected locations there must be a conduit for threading the cables.
2 Remove the front glass [A] by prising it out with a slotted tip
screwdriver applied to the bottom.
3 Press the lens in order to separate the two shells.
4 Breach two of the four holes [B] at the bottom with a screwdriver.
5 Position the photocell at the point where the conduit arrives; the hole
at the bottom [D] should match the point where the cables come out of
the wall; mark the drilling points using the bottom as reference.
6 Drill the holes in the wall using a hammer drill with a 5 mm bit and insert
the 5 mm screw anchors.
7 Secure the bottom with the screws [C].
8 Connect the electric cable to the appropriate TX and RX terminals.
From an electrical viewpoint, TX and RX must be connected in parallel as
shown in Figure 33. It is not necessary to observe any polarity. The
terminals can be removed in order to facilitate the operations; make the
connections and then reinsert them.
9 Secure the cover shell [E] using the two screws [F] and a Phillips
screwdriver. Then insert the glass [G], pressing it gently to close it.
25 Loosen the cable gland under the gearmotor, push the power cable
through and then firmly close the cable gland.
26 Make electrical connections as follows.
27 Close the back cover of the gearmotors by inserting it in the direction
of the arrows.
Figure 28
3.3.2
Photocells
A
Figure 29
Figure 30
Figure 31
Figure 32
Figure 33
Figure 34
B
C
D
C
E
F
G
TX
RX
brown
blue
yellow-green
