
10
SICK WSU 26/2 – WEU 26/2
8 008 692/9-12-99 Technical Description · WSU/WEU 26-2 © SICK AG · Safety Systems · Germany · All rights reserved
The use of corner mirrors reduces the scanning range
of the WSU/WEU system as cited in the table.
Number of mirrors
Reduced scanning range
Reduced scanning range
0.5 ... 18 m WSU
15 ... 70 m WSU
1
17 m
67 m
2
15.5 m
61 m
3
13 m
51 m
4
11 m
42 m
Tab. 2: Reduction in scanning range when using corner mirrors
Fig. 8: Multi-sided protection of hazardous
areas
Fig. 9: Two-beam protection with a WSU/WEU 26 system
Corner mirror
Corner mirror
5.4 Corner mirrors
In conjunction with corner mirrors,
the WSU/WEU provides multi-
sided, two-beam access protection
(
Fig. 8 and 9
).
KA
Reflection
possible
Safety distance
too small
Corner mirror
Corner mirror
Hazardous area
Power-driven
machinery
(PDM)
Corner mirror
Hazardous area
Power-driven
machinery (PDM)
The use of more than 2 mirrors requires a very accurate
alignment.