Check The Application Conditions - SICK WLA26 Serie Instrucciones De Uso

7
COMMISSIONING
7.2

Check the application conditions

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26 O P E R A T I N G I N S T R U C T I O N S | WLA26
Table: Alignment
Figure 14: Alignment 1
WLA26 are photoelectric retro-reflective sensors in which the autocollimation principle
has been combined with a multi-receiver element, thereby ensuring the greatest possi‐
ble resistance to depolarizing objects combined with a very high sensing range. This
means the WLA26 has a high operating reserve (insensitivity to dust) 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 [see table 14] (x = sensing range, y = operating reserve).
NOTE TIP:
Should switching errors nevertheless arise due to extremely depolarizing objects, the
WLA26 can also be adapted to these extreme conditions and the switching errors
suppressed by means of a teach-in (via IO-Link or using the Teach-in button on the
housing).
Table 14: Application conditions
Function reserve
1,000
WLA26P-xxxxx1xx
100
10
2 4
3
1
1
0 4 8 12
(13.12) (26.25) (39.37)
Figure 16: Characteristic line 1: Standard
reflector
Reflector PL20A
1
Reflector PL22
2
Figure 15: Alignment 2
1
0
2
0
3
0
4
0
5
0
6
0
0
Sensing range
Figure 17: Bar graph 1: Standard reflector
Sensing range
6
Reflector PL20A
1
5
Reflector PL22
2
16 20
Reflector PL250
3
(52.49) (65.62)
Distance in m (feet)
Reflector PL30A
4
Reflector PL40A
5
Reflector PL80A, C110A
6
5.5 7
8 10
10 15
11.5 16
12 17
12 18
4 8 12 16
18
(13.12) (26.25) (39.37) (52.49)
Distance in m (feet)
Sensing range typ. max.
8020357.1DS8/2021-11-24 | SICK
Subject to change without notice
20
(65.62)