Tab. 3: Height Of The Beams Above The Floor; Fig. 7: Safety Distance S To The Light Beam - SICK L 4000 Manual De Instrucciones

Operating Instructions
L 4000 system
Fig. 7: Safety distance S
to the light beam
Note
Tab. 3: Height of the
beams above the floor
8010009/TI69/2009-11-26
Installation and mounting
Reach or approach speed of personnel,
Other parameters that are stipulated by the standard depending on
the application.
L 400/
L 4000
How to calculate the safety distance S according to EN 999 and
EN 294:
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 L 4000 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
Example:
Access protection with two beams C = 850 mm
Machine stopping/run-down time = 290 ms
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
Safety distance S (D )
s
1100
700
300
1 2
750 400
900
1200 850
Chapter 4
Hazar-
dous
point
3 4
300 300
700 600
1100 900
1200
850 850
295