Omron F3SL Instruction Manual page 24

9 Installation
Emitter
Interruption is not detected because of the reflection. Reflective surface interference may also appear above and
below the sensing field.
Emitter
This example shows the minimum distance from the reflective surface, d, to one side of the beam center line.
d(mm)
Figure 9-5 Minimum Distance from a Reflective Surface as a Function of Range
18
Sensing Field
Interruption
a
Perimter of danger area
Figure 9-3 Unsafe Mounting Example
Operating Range, R
Reflective Surface
Perimeter of danger area
Figure 9-4 Worst Case Alignment Example
1.3m
1.1m
900
700
500
300
100
0.3m 2m 6m
0 4m
Reflection
Receiver
Reflective Surface
a
Receiver
a
Beam Angle, a
d
8m 10m 12m 14m
Range (m)
9-1 Reflective Surface Interference
18m 20m
16m