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Contrinex Industrial Electronics
DISTANCE FROM REFLECTIVE SURFACES
Reflective surfaces (such as mirrors, glass panes, polished metal parts,
etc.) located near the light beams may cause undesired reflections of
safety relevant light beams. This can result in a failure to detect opaque
objects in the protection field. To avoid such problems, a minimum dis-
tance must be maintained between the protective field and any reflec-
tive surface, whether above, below or to the side.
The minimum distance (a) between the protective field and a reflective
surface depends on the operating distance (d) between the sender and
receiver units. The longer the operating distance, the further away re-
flective surfaces must be kept from the protective field.
FIG. 12: DISTANCE BETWEEN REFLECTIVE SURFACE AND PROTECTIVE FIELD IS TOO SHORT;
A REFLECTED BEAM UNINTENTIONALLY REACHES THE RECEIVER
Reflective surface
(a)
(d)
