SICK L4000 Mode D'emploi page 76

Operating Instructions
L4000 system
Fig. 7: Safety distance S to
the light beam
Note
Tab. 3: Height of the
beams above the floor
8010009/1HGT/2022-11-21
Subject to change without notice
Installation and mounting
 Reach or approach speed of personnel,
 Other parameters that are stipulated by the standard depending on
the application.
How to calculate the safety distance S according to EN ISO 13855
and EN ISO 13857:
The following calculation shows an example calculation of the safety
distance. Depending on the application and the ambient conditions, a
different calculation may be necessary.
 First, calculate S using the following formula:
S = K x T + C [mm]
Where ...
T = Stopping/run-down time of the machine
+ response time of the L4000 system after interruption of
light path [s]
S = Safety distance [mm]
K = Approach speed of personnel 1.6 [m/s]
C = Dependent on the number of beams (1, 2, 3 or 4) see Tab. 3
Number of beams
Height of the beams
above the floor
[mm]
C
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
Safety distance S (D )
s
1 2
750 400
900
1200 850
Chapter 4
Hazardous
point
3 4
300 300
700 600
1100 900
1200
850 850
en
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