Check The Application Conditions - SICK W16 Instrucciones De Uso

7.2

Check the application conditions

8024126.1DS6/2021-11-24 | SICK
Subject to change without notice
WTF16I: Align the sensor with the background. Select the position so that the infrared
light (not visible) hits the objects. The correct alignment can only be detected via the
LEDs. see figure 7 and table
screen) of the sensor is completely clear.
Figure 7: Alignment
WTF16 are photoelectric proximity sensors with foreground suppression. The photoelec‐
tric proximity sensor requires a background as a reference. The remission and position
of the background should remain as uniform as possible. The maximum distance (x)
between the photoelectric proximity sensor and background as well as the minimum
object height (y) must be upheld.
As a rule, a WTF16 is used to detect very flat objects on a conveyor belt.
Check the application conditions: Compare distance between sensor and background,
minimal object height as well as remission capability of background and object with the
associated diagram (see figure 8, page
page 26) (x = sensing range, y = minimum object height. Remission: 6% = black 1,
90% = white 2 (referring to standard white as per DIN 5033).
Example: x = 300 mm, y = 7 mm, i.e. a white object is detected from a height of at least
7 mm on a black background. The distance between photoelectric proximity sensor and
background is 300 mm.
Table 12: Application conditions
Minimum object height in mm (y)
y
26
WTF16P-xxxxx2xx
24
90%/6%
20
16
6%/6%
12
8
6%/90%
4
90%/90%
0
0 50 100 150 200 250 300 350
(1.97) (3.94) (5.91) (7.87) (9.84) (9.84) (13.78)
Distance in mm (inch)
Figure 8: Characteristic line 1, WTF16P-xxxxx2xx, red
light
Black object, 6% remission, in front of black
1
background, 6% remission
Black object, 6% remission, in front of white
2
background, 90% remission
White object, 90% remission, in front of black
3
background, 6% remission
10. You must ensure that the optical opening (front
25, see figure 9, page 26
3
1
2
x
4
y
Background
x
Example:
400
(15.75) Sensing range on black background, 6%,
x = 300 mm, y = 7 mm for white object
O P E R A T I N G I N S T R U C T I O N S | WTF16
COMMISSIONING
or see figure 10,
1
2
100 400
(3.94) (15.75)
Distance in mm (inch)
D
C
A B
A Sensing range min. in mm
B Sensing range max. in mm
C Viewing range
D Adjustable switching thresh‐
old for foreground suppres‐
sion
E Sensing range indicator
F Teach-Turn adjustment
Sensing range on black, 6%
1
radiance factor
Sensing range on white, 90%
2
radiance factor
7
en
BluePilot:
E
F
25