SICK GRTB18V Instrucciones De Operación página 9

8021184.16B5 | SICK
Subject to change without notice
Check the application conditions: Adjust the sensing range and distance to the object or
background and the remission capability of the object according to the corresponding dia‐
gram [see figure 10] (x = sensing range, y = monitored area between the set sensing range
and background suppression as a % of the sensing range (object remission/background
remission)). Remission: 6% = black 1, 18% = gray 2, 90% = white 3 (referring to stan‐
dard white as per DIN 5033). We recommend making the adjustments using an object with
a low remission.
The minimum distance (= y) for background suppression can be determined from diagram
[ see figure 10 1] as follows:
Example: x = 150 mm, y = 20 => 20% of 150 mm = 30 mm. That is, the background is
suppressed at a distance of > 180 mm from the sensor.
Minimum distance between set sensing range and
background (white, 90%) in % of sensing range
y
25
20 6%/90%
1
15
10
5
0
0 50 100 150
(1.97) (13.94) (5.91)
1
Sensing range on black, 6 % remission
2
Sensing range on gray, 18 % remission
3
Sensing range on white, 90 % remission
Figure 10: Sensing range of up to 300 mm
Use figure 12 and Table 3 to check the function. If the switching output fails to behave in
accordance with Table 3, check the application conditions. See section Fault diagnosis.
Figure 11: Description of the
3 Sensing range setting
Sensor which it is not possible to set: The sensor is adjusted and ready for operation.
18%/90%
2
90%/90%
3
x
200 250 300
(7.87) (9.84) (11.81)
Distance in mm (inch)
COMMISSIONING
white background (90%)
x y
Example:
Sensing range on black, 6%
x = 100 mm, y = (10% of 100 mm) =10 mm
6
9