Panasonic SE4D Series Instruction Manual

182-3-3 Influence of Reflective SurfacesIf 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 surfacedoes not enter into the receiver, or take countermeasures such as painting, mask-ing, roughening, or changing the material of the reflective surface, etc. Failure todo 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 sur-faces such as metal walls, floors, ceilings, workpieces, covers, panels or glass surfaces.Distance between emitter and receiver(Sensing range L) Allowable installation distance A0.3 to 3m 0.16m3 to 9m (Note 1) L/2 × tan 2θ = L/2 × 0.105 (m) (θ = 3°)Notes: 1) The sensing range L is applicable to 12 to 64 beam channels. For 72 to 96 beam channels, the dis-tance between emitter and receiver is 3 to 7m .2) The effective aperture angle for this device is ±2.5° or less (when L > 3m) as required by IEC61496-2, ANSI/UL 61496-2. However, install this device away from reflective surfaces consideringan effective aperture angle of ±3° to take care of beam misalignment, etc. during installation.Reflective ceilingReflective floorEmitter ReceiverAASensing rangeLReflective surfaceEmitter ReceiverASensing rangeLθθAllowable Distance from This Device to Reflective SurfaceAllowable installation distance A (m)Install in this areaDo not install in this areaDistance between emitter and receiver L (m)