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© Panasonic Industrial Devices SUNX Co., Ltd. 2014
19
Protection Area
2-3-3 Influence of Reflective Surfaces
WARNING
If there exists a reflective surface in the place where this device is to be installed, make sure to
install this device so that reflected light from the reflective surface does not enter into the receiver,
or take countermeasures such as painting, masking, roughening, or changing the material of the
reflective surface, etc. Failure to do so may cause the device not to detect, resulting in death or
serious injury.
Install this device at a distance of at least A (m) (given below) away from reflective surfaces
such as metal walls, floors, ceilings, workpieces, covers, panels or glass surfaces.
<Side View>
Reflective ceiling
Reflective floor
Emitter
Receiver
A
A
Sensing range
L
<Top View>
Reflective surface
Emitter
Receiver
A
Sensing range
L
θ
θ
Distance between emitter and receiver (Sensing range L)
Allowable installation distance A
0.3 to 3m
0.16m
3 to 7m
L/2 × tan 2θ = L/2 × 0.105 (m) (θ = 3°)
Note: The effective aperture angle for this device is ±2.5° or less (when L > 3m) as required by IEC 61496-2,
ANSI/UL 61496-2. However, install this device away from reflective surfaces considering an effective aper
-
ture angle of ±3° to take care of beam misalignment, etc. during installation.
Allowable Distance from This Device to Reflective Surface
Allowable installation distance
A
(m)
Distance between emitter and receiver
Install in this area
Do not install in this area
Ramco National
800-280-6933 | [email protected]
www.panasonicsensors.com