SICK W26, Operating Instructions Manual

Page: 27 / 168

Table: Alignment
Figure 14: Alignment 1 Figure 15: Alignment 2
7.2 Check the application conditions
WTB26 are photoelectric proximity sensors with background suppression. Depending
on the remission of the object to be detected, and perhaps the background behind it,
a minimum distance (y) between the set sensing range (x) and the background is to be
maintained.
Check the application conditions: Adjust the sensing range and distance to the object
or background as well as the remission capability of the object according to the corre‐
sponding diagram [see figures 5 and 7] (x = sensing range, y = minimum distance
between set sensing range and background (white, 90%)) Remission: 6% = black
1
,
18% = gray
2
, 90% = white
3
(referring to standard white as per DIN 5033). We
recommend that the adjustment be performed with an object of low remission.
The minimum distance (= y) for the background suppression can be determined from
the diagram [
figure 16
1
] as follows:
Example: x = 600 mm, y = 40 mm. That is, the background (white, 90%) is suppressed
at a distance of > 40 mm of the configured sensing range.
Table 12: Application conditions
0
40
20
140
120
100
80
60
180
160
200
400
(15.75)
800
(31.5)
2,000
(78.74)
1,200
(47.24)
1,600
(62.99)
0
1
2
3
WTB26P-xxxxx1xx
18%/90%
6%/90%
90%/90%
y
x
y x
Minimum distance in mm (y) between the set sensing
range and background (white, 90%)
white background (90%)
Example:
Sensing range on black, 6%,
x = 600 mm, y = 40 mm
Distance in mm (inch)
Figure 16: Characteristic line 1, WTB26P-xxxxx1xx, red
light
1
Sensing range on black, 6% remission
2
Sensing range on gray, 18% remission
3
Sensing range on white, 90% remission
180
(7.09)
400
(15.75)
A
800
(31.5)
1,200
(47.24)
1,600
(62.99)
0
1
2
3
BluePilot:
30
Adjustment range
Distance in mm (inch)
Sensing range
indicator (blue LED)
Teach-Turn
adjustment
A = Detection distance (depending on object remission)
800
100
/
180
1,000
1,600
75
/
180
180
COMMISSIONING
7
8020354.1DS8/2021-11-24 | SICK O P E R A T I N G I N S T R U C T I O N S | WTB26 27
Subject to change without notice
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