Operating Instructions Chapter 5
C4000 Standard/Advanced
8009861/WA65/2012-06-12 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 43
Subject to change without notice
Installation and mounting
5.1.2 Minimum distance to reflective surfaces
The light beams from the sender may be deflected by reflective surfaces. This can result in
failure to identify an object.
All reflective surfaces and objects (e.g. material bins) must therefore be located at a
minimum distance a from the protective field of the system. The minimum distance (a)
depends on the distance (D) between sender and receiver.
The field of view of the sender and receiver optics is identical.
How to determine the minimum distance from reflective surfaces:
Determine the distance (D) [m] sender-receiver.
Read the minimum distance (a) [mm] from the graph:
If under any circumstances the minimum distance to reflective surfaces in the application
can not be achieved, there are measures to minimize the amount of deflection and the
resulting reduction of the resolution of the safety light curtain.
To verify whether these measures are sufficient to minimize the residual risk caused by the
reduction of the resolution of the safety light curtain, an overall risk assessment of the
application needs to be done by the manufacturer of the machine.
For further information or support please contact SICK.
from reflective surfaces
Note
distance from reflective
surfaces
Note
Distance (D) sender-receiver
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