SICK WT24-2 Manual De Instrucciones página 12

OPERATING INSTRUCTIONS
en
12 O P E R A T I N G I N S T R U C T I O N S | WT24-2
2 Sensing range
WTB24-2 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 should be
maintained.
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 5 1] as follows:
Example: x = 600 mm, y = 4.5 => 4.5% of 600 mm = 27 mm. That is, the background is
suppressed at a distance of > 627 mm from the sensor.
y
10
8
6
6%/90%
1
4
2
0
mm 200 400 600 800
Figure 5: WT24-2Xx4x, -2Xx5x, red light
y
10
8
6
6%/90%
1 18%/90%
4
2
0
mm 500 1000 1500
Figure 6: WT24-2Xx1x, -2Xx2x, infrared
light
18%/90%
2
x = 600 mm, y = 27 mm
(= 4.5% of 600 mm)
90%/90%
3
1
2
x
1000 1200 1400
3
Distance in mm
A = detection distance (depending on
object remission)
B= adjustment range
2
x = 1,000 mm, y = 30 mm
(= 3% of 1,000 mm)
90%/90%
3
1
2
x
2000 2500 3000 3
Distance in mm
A
A = detection distance (depending on
object remission)
B= adjustment range
white back-
ground (90%)
x y
100 600
100 900
100
A B
white back-
ground (90%)
x y
100 1,300
100 1,800
100 2,500
B
8008784.1DMA/2022-07-12 | SICK
Subject to change without notice
1,200