Distance From Reflective Surfaces - Reer EOS2 A Manual

EOS2 SAFETY LIGHT CURTAIN

Distance from reflective surfaces

The presence of reflective surfaces close to the light curtain may cause occasional
reflections that prevent sensing. Referring to Figure 8, object A is not detected due to
surface S that, reflecting the beam, closes the optical path between the Emitter and
Receiver. Therefore, a minimum distance d must be maintained between any
reflecting surfaces and the guarded area. The minimum distance d must be
calculated according to the distance l between the Emitter and Receiver and taking
into account that the angle of projection and reception is 5°.
The distance d to be kept as the distance l between Emitter and Receiver varies is shown
in Picture 9.
After installing the system, check for any reflective surface that intercept the beams, first
of all at the centre and then close to the Emitter and Receiver. During this procedure, the
red led on the Receiver must never switch off.
8540738 • 2nd December 2009 • Rev.2
Figure 8 - Reflective surfaces
Figure 9 - Minimum distance d
l
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