Preventing Mutual Interference Between Adjacent Devices - Leuze electronic MLC 520 EX Series Original Operating Instructions

Table 6.2:
Distance (b) transmit-
ter-receiver
b 3 m

b > 3 m
6.1.5 Preventing mutual interference
between adjacent devices
If a receiver is located in the beam path of an adjacent transmitter, optical crosstalk, and thus erroneous
switching and failure of the protective function, may result (see figure 6.4).
1
2
3
4
Figure 6.4: Optical crosstalk between adjacent safety sensors (transmitter 1 influences receiver 2) due
to incorrect mounting
NOTICE
Possible impairment of the availability due to systems mounted close to each other!
The transmitter of one system can influence the receiver of the other system.
 Prevent optical crosstalk between adjacent devices.
 Mount adjacent devices with a shield between them or install a dividing wall to prevent mutual interfer-
ence.
 Mount the adjacent devices opposite from one another to prevent mutual interference.
Leuze electronic
Formula for calculating the minimum distance to reflective surfaces
Calculation of the minimum distance (a) to reflective surfaces
a [mm] = 131
a [mm] = tan(2.5°)
1
2
Transmitter 1
Receiver 1
Transmitter 2
Receiver 2
1000 b [m] = 43.66 b [m]
  
MLC 520 EX
3
4
Mounting
26