Distance (D) between sender and
r
eceiver in m
Calculation of the minimum distance (a) from reflective
surfaces in mm
D > 3 m a = tan (2.5°) × 1,000 mm/m × D = 43.66 × 1 mm/m ×
D
4.3.4 Protection against interference from systems in close proximity to each other
Overview
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.
Important information
DANGER
H
azard due to lack of effectiveness of the protective device
Systems of safety light curtains that operate in close proximity to each other can inter‐
fere with each other.
b
Use appropriate measures to prevent systems in close proximity from interfering
with each other.
NOTE
T
he safety light curtain uses a diagnostic function to check whether suitable measures
were taken to protect systems in close proximity to each other against interference. If
the safety light curtain identifies an unsuitable installation situation, it switches to the
locking state.
Preventing interference between systems in close proximity to each other
T
he following measures prevent interference from systems in close proximity:
•
Reversed direction of transmission for neighboring systems of the same type
•
Sufficient distance between two systems of the same type with the same direction
of transmission
•
Optically opaque partitions (always required if another safety light curtain is
installed next to the deTec4 Core Vibes safety light curtain)
Further topics
•
"Using reversed direction of transmission", page 23
•
"Maintaining sufficient distance", page 23
4 P
ROJECT PLANNING
22
O P E R A T I N G I N S T R U C T I O N S | deTec4 Core Vibes 8024467/2019-06-18 | SICK
Subject to change without notice
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