Distance From Reflective Surfaces; How To Prevent Mutual Interference - Omron F3S-B122P-L Instruction Manual

Safety light curtain
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2-1-3 Distance from Reflective Surfaces

Be sure to install the F3S-B to minimize the effects of reflection from reflective surfaces.
Failure to do so will cause detection to fail and may result in serious injury.
Install the F3S-B with minimum Distance D shown below from reflective surfaces (highly reflective sur-
faces) like metal walls, floors, ceilings, and work pieces.
<Side View>
Reflecting ceiling
Emitter
Detection zone
L
Reflecting floor
Distance between emitter and
receiver (detection distance L)
0.3 to 3 m
3 to 5 m

2-1-4 How to Prevent Mutual Interference

Take action to prevent mutual interference when two or more sensors are installed. The following figures
show configurations in which mutual interference may occur.
(Incorrect)
RS-485
(Incorrect)
Emitter 1
Emitter 2
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WARNING
D
Receiver
D
Minimum installation
L x tan 5° = L x 0.087 (m)
RS-485
Receiver 1
Receiver 2
<Top View>
Reflecting surface
Emitter
L
distance D
0.27 m
(Incorrect)
RS-485
F3S-B
D
Receiver
19

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