SICK deTec4 Ex II 3GD - Protection against Interference from Systems in Close Proximity to each Other

4.3.4 Protection against interference from systems in close proximity to each other
Overview
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r
s
r
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Figure 15: 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.
Important information
DANGER
H
azard due to lack of effectiveness of the protective device
The integrated laser alignment aid may influence the receiver of a safety light curtain
in close proximity. In such cases, the neighboring safety light curtain may not detect
persons or parts of the body that require protection.
b
Perform an alignment or take other measures to ensure that the laser beam only
hits the front screen of the relevant receiver. The laser beam must not hit any
external receiver should the integrated laser alignment aid be switched on by
mistake or due to a fault. An external receiver is a receiver that is not part of the
same safety light curtain or same cascade.
b
During alignment in particular, make sure that the laser beam does not hit any
external receiver.
DANGER
Hazard due to lack of effectiveness of the protective device
Systems of safety light curtains that operate in close proximity to each other can
interfere with each other.
b
Use appropriate measures to prevent systems in close proximity from interfering
with each other.
Preventing interference between systems in close proximity to each other
T
he following measures prevent interference from systems in close proximity:
•
Different beam coding for neighboring systems
•
Reversed direction of transmission for neighboring systems
•
Sender with a small scanning range
•
Optically opaque partitions
Further topics
•
"Usin
g beam coding", page 34
•
"Using reversed direction of transmission", page 34
•
"Using a sender with a small scanning range", page 35
PROJECT PLANNING 4
8023872/18YZ/2021-01-14 | SICK O P E R A T I N G I N S T R U C T I O N S | deTec4 Ex II 3GD
33
Subject to change without notice