6.2 Alignment
Align the sensor with a suitable reflector. Select the position so that the red emitted
light beam hits the center of the reflector. The sensor must have a clear view of the
reflector. There must be no object in the path of the beam [see figure 3]. You must
ensure that the optical openings of the sensor and reflector are completely clear.
Figure 3: Alignment
Figure 4: WLG4S alignment
6.3
Check the application conditions
WLG4S are photoelectric retro-reflective sensors in which the autocollimation principle
has been combined with a multi-receiver element (SSR), thereby ensuring the greatest
possible resistance to depolarizing objects combined with a very high sensing range.
This means the WLG4S has a high operating reserve (insensitivity to contamination)
and does not exhibit any switching errors with depolarizing objects.
Adjust the distance between the sensor and the reflector according to the correspond‐
ing diagram [table 7] (x = sensing range, y = operating reserve).
OPERATING INSTRUCTIONS
38
O P E R A T I N G I N S T R U C T I O N S | WLG4S 80282151N09/2024-03-12 | SICK
Subject to change without notice
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