4.3.4
Protection against interference from systems in close proximity to each other
Overview
s
r
s
r
1
2
Figure 12: Preventing mutual interference from system
1
and system
2
The infrared light beams of the sender of system
1
can interfere with the receiver of
system
2
. This can disrupt the protective function of system
2
. This would mean that
the operator is at risk.
Avoid such installation situations or take appropriate action, e.g., install optically opa‐
que partitions or reverse the direction of transmission of a system.
Important information
DANGER
Hazard due to lack of effectiveness of the protective device
Systems of safety light curtains in close proximity to each other can mutually interfere
with each other.
b
Use appropriate measures to prevent systems in close proximity from interfering
with each other.
4.3.4.1
Using reversed direction of transmission
Using reversed direction of transmission
The direction of transmission of the system
2
can be changed during mounting by
switching the positions of the sender and receiver. With reversed direction of mounting,
the receiver
2
is not affected by the infrared light from the sender
1
.
2
1
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
r
s
r
Figure 13: Trouble-free operation due to reversed direction of transmission of system
1
and
system
2
PROJECT PLANNING
4
8014276/1DCM/2022-10-27 | SICK
O P E R A T I N G I N S T R U C T I O N S | deTec2 Core
21
Subject to change without notice