Protection Area
© Panasonic Industrial Devices SUNX Co., Ltd. 2020
29
2-3-3 Effects of Reflective Surfaces
WARNING
If there are reflective surfaces where the device is to be installed, install so that light reflected
from the reflective surfaces does not enter the receiver. Or prevent reflection from the surface by
coating or masking the surface, roughening the surface, changing materials, or otherwise. Risk of
death or serious injury if the device becomes incapable of detection because measures are not
taken to prevent reflection.
Install the device at a distance greater than or equal to the distance A (m) indicated below from
a metal wall, floor, ceiling, or sensing object, or a cover, panel, or glass with a reflective surface
(surface with high reflectivity).
<Side>
Reflective ceiling
Reflective floor
Emitter
Receiver
A
A
Sensing range
L
<Top>
Reflective surface
Emitter
Receiver
A
Sensing range
L
5°
Distance (sensing range L) between emitter and receiver
Permissible installation distance A
When 0.2 to 3m
0.131m
When 3 to 15m
L / 2 × tan5 ≈ L × 0.0437 (m)
Permissible device installation distance from reflective surface
Permissible installation distance
A (m)
Distance L (m) between emitter and receiver
Installation
allowed area
Installation
prohibited area
Summary of Contents for SF4D-*-01 Series
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