6
INSTALLATIONINSTALLATION
Preacautions and mechanical installation
Before installation please consider that:
• Neither the emitter nor the receiver have to be placed in the proximity of high-intensity or
blinking light sources
• If the system is installed in places undergoing sudden temperature variations it is
necessary to adopt the customary measures to prevent the formation of condensate on
the lenses, as this might impair their detection capability.
The emitter and the receiver must be installed one in front of the other at a distance which
must not exceed the operating range.
F
A good alignment between the emitter and the receiver is necessary for theA good alignment between the emitter and the receiver is necessary for the
correct operation of the photocell. The green led on the receiver, indicating acorrect operation of the photocell. The green led on the receiver, indicating a
sufficient intensity of the received signal, can help for this purpose.sufficient intensity of the received signal, can help for this purpose.
Distance from reflecting surfaces
Reflecting surfaces located next to the photocell(s) may cause spurious reflections that would
close the optical path between the emitter and the receiver and inhibit the system's detection
capability (fig. 2).
Having completed the installation, check for the presence of reflecting surfaces which might
intercept the beam, first in the centre and then in the proximity of the emitter and the
receiver. If any object is intercepted, the green led located on the receiver (fig. 1) must never
light up.
Figure Figure 22
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