Pepperl+Fuchs SLCS Original Instructions Manual page 16

Safety Light Curtain SLCS
Installation
EN
14 - EN
Example: vertical arrangement
t = 50 ms
1
t = 300 ms
2
Hand protection C = 128 mm
S = 2000 mm/s * (350 * 10
S = 700 mm + 128 mm = 828 mm
As S is > 500 mm, a smaller value can also be determined:
S = 1600 mm/s * (350 * 10
The minimum distance between the protection field and hazardous area must
therefore be 688 mm.
Parallel approach
Distance S
Danger
zone
Figure 5.3 Explanation of the safety distance in a horizontal arrangement of the
protective field
If the safety light curtain is aligned in a horizontal position, the safety distance S
will also depend on the height of the light curtain above the floor. The maximum
height H must not exceed 1000 mm.
Note!
If H is greater than 300 mm, there is a risk that access underneath the safety light
curtain will be possible.
This must be taken into consideration in the risk analysis, otherwise additional
protection will be required.
The safety distance is calculated as follows:
S = 1600 mm/s * (t + t
1
(1200 mm - 0.4 H)  850 mm is also required.
-3
s) + 128 mm
-3
s) + 128 mm = 688 mm
Protective field
H (height above ground)
) + (1200 mm - 0.4 H)
2