Check The Application Conditions - SICK WLA26 Instrucciones De Operación

7.2

Check the application conditions

8020357.19RH / 15.01.2021 | SICK
Subject to change without notice
Table: Alignment
Figure 1: 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 7] (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 7: Application conditions
Function reserve
1,000
WLA26P-xxxxx1xx
100
10
2 4
1
1
4 8 12
0
(13.12) (26.25) (39.37)
Figure 3: Characteristic line 1: Standard
reflector
Reflector PL20A
1
Reflector PL22
2
Figure 2: Alignment 2
1
0
2
0
3
0
4
0
5
0
6
0
0
Sensing range
Figure 4: Bar graph 1: Standard reflector
Sensing range
6
1
5
3
2
16 20
3
(52.49) (65.62)
Distance in m (feet)
4
5
6
COMMISSIONING
5.5 7
8 10
15
10
11.5 16
12 17
12
4 8 12 16
(13.12) (26.25) (39.37) (52.49)
Distance in m (feet)
Sensing range typ. max.
Reflector PL20A
Reflector PL22
Reflector PL250
Reflector PL30A
Reflector PL40A
Reflector PL80A, C110A
7
18
20
18
(65.62)
9