Influence Of Reflective Surfaces - Panasonic SF4-AH Series Instruction Manual

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3-1-3

Influence of Reflective Surfaces

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 sensor 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.

Note:The effective aperture angle for this device is ±2.5° (when L > 3m) as required by IEC 61496-2. However,

install this device away from reflective surfaces considering an effective aperture angle of ±3° to take

care of beam misalignment, etc., during installation.

Allowable distance from sensor beam channel to reflective surface

- 40 -

Distance between emitter and

receiver (Sensing range L)

0.3 to 3m

3 to 7m

Allowable

installation

distance A

0.16m

L × tan ∂

= L × 0.052 (m) (∂ = 3˚)

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