NBB
≥
1 for object detection:
Q
int
3 active if at least 1 beam is interrupted
Example 2 width classification with NBB:
It should be detected when objects have the width of 10 light beams.
NBB = 10 for width classification:
Q
int
1 active if exactly 10 beams are interrupted in a zone
2
1
4
3
6
5
8
7
1
0
9
1
2
1
1
1
4
1
3
1
6
1
5
1
8
1
7
2
0
1
9
Zone 1 (NBB)
Figure 21: Width classification with NBB, example 2
Example 3 height classification with FBB:
Boxes above a certain size should be detected (large or larger than shown in the figure).
The light grid is mounted from above (connection side at the top). The objects travel, for
example, on a conveyor belt between the light grid.
FBB
≤
10:
If within zone 4 the first interrupted beam is 10 or lower, internal switching signal Q
int
4
is activated:
12
11
10
9
8
7
6
5
4
3
2
1
14
13
16
15
18
17
20
19
Z
o
ne
4
(
F
B
B
)
Figure 22: Height measurement with FBB, example 3
If a box is smaller than shown in the graphic, the first interrupted light beam is > 10
and internal switching signal Q
int
4 remains deactivated.
Example 4 height classification with LBB:
7
OPERATION
32
O P E R A T I N G I N S T R U C T I O N S | SLG-2
8026014/2021-06-10 | SICK
Subject to change without notice
