Protection Against Interference From Systems In Close Proximity To Each Other - SICK deTec4 Core Ex II 3GD Operating Instructions Manual

4.3.4

Protection against interference from systems in close proximity to each other

8021796/1DCM/2022-10-27 | SICK
Subject to change without notice
Determining minimum distance from reflective surfaces with automated calibration of
the protective field width
The minimum distance can be determined as follows:
Determine the distance between sender and receiver D in meters (m).
b
Read the minimum distance a in millimeters (mm) in the graph or calculate using
b
the respective formula to determine the minimum distance to reflective surfaces:
a/mm
500
400
300
200
100
1 2 3
Figure 11: Graph of minimum distance from reflective surfaces
Table 2: Formula for calculating the minimum distance to reflective surfaces with automatic
calibration of the protective field width
Distance D between sender and
receiver in m
D ≤ 3 m
D > 3 m
Overview
1
s
s
Figure 12: Preventing mutual interference from system
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.
4 5 6 7
Calculation of the minimum distance (a) to reflective
surfaces in mm
a = 131 mm
a = tan (2.5°) × 1,000 mm/m × D = 43.66 × 1 mm/m ×
D
r
r
2
1 and system 2
O P E R A T I N G I N S T R U C T I O N S | deTec4 Core Ex II 3GD
PROJECT PLANNING
8 9 10 11 12
4
D/m
21