Operating Instructions Chapter 6
C4000 Palletizer Std./Adv.
C4000 Fusion
8012249/YT69/2016-02-25 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 59
Subject to change without notice
Mounting
6.2 Determining the safety distance in a horizontal
application
T
he safety light curtain must be mounted with sufficient safety distance:
from the hazardous point
from reflective surfaces
No protective function without sufficient safety distance!
The reliable protective effect of the safety light curtain depends on the system being
mounted with the correct safety distance from the hazardous point.
A safety distance must be maintained between the safety light curtain and the hazardous
point. This safety distance ensures that the hazardous point can only be reached after the
dangerous state of the machine has been completely stopped.
The safety distance as per EN ISO 13855 and EN ISO 13857 depends on:
stopping/run-down time of the machine or system
(The stopping/run-down time is shown in the machine documentation or must be
determined by taking a measurement.)
response time of the protective device
(response times see section 12.2 “Response time” on page 99)
approach speed
other parameters that are stipulated by the standard depending on the application
The safety distance relates to the first beam in the protective field, as seen from the direc-
tion of approach toward the hazardous point (see Fig. 36).
The following calculations show example calculations of the safety distance. Depending on
the application and the ambient conditions, a different calculation may be necessary.
WARNING
the hazardous point
Note
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