Minimum Distance To Reflective Surfaces - Leuze electronic MLC 520 EX Series Original Operating Instructions

S
K
T
C
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A suitable safety sensor has been found; its protective field height is 1500 mm.
6.1.4

Minimum distance to reflective surfaces

WARNING
Failure to maintain minimum distances to reflective surfaces may result in serious injury!
Reflective surfaces can indirectly deflect the transmitter beams to the receiver. In this case, interruption
of the protective field is not detected.
 Determine the minimum distance a (see figure 6.2).
 Make certain that all reflective surfaces are the necessary minimum distance away from the protective
field according to prEN IEC 61496-2 (see figure 6.3).
 Check that reflective surfaces do not impair the detection capability of the safety sensor before start-
up and at appropriate intervals.
a
b
c
Figure 6.2: Minimum distance to reflective surfaces depending on protective field width
a
1100 mm
1000 mm
900 mm
800 mm
700 mm
600 mm
500 mm
400 mm
300 mm
200 mm
131 mm
a
b
Figure 6.3: Minimum distance to reflective surfaces as a function of the protective field width
Leuze electronic
K T C

= +
[mm/s] = 1600
[s] = (0.140 + 0.014 + 0.010)
[mm] = 1200
[mm] = 1600 mm/s  0.164 s + 1200 mm
[mm] = 1463
a
4°
Required minimum distance to reflective surfaces [mm]
Protective field width [m]
Reflective surface
5 m
3 m
Required minimum distance to reflective surfaces [mm]
Protective field width [m]
c
b
15 m
10 m
MLC 520 EX
4°
20 m
Mounting
b
25 m
25