How To Select A Safety Device - Pilz PSEN op2/4 Instrucciones De Uso

Operating Manual
1.2.

How to select a safety device

Three characteristic features should be taken into account when
selecting a safety light curtain:
•
Resolution, depending on the part of the body requiring protection.
R = 14mm Finger
protection
R = 30 mm Hand protection
R > 40mm
Body protection
The resolution (R) of a device is understood to be the minimum size
an opaque object must be in order to obscure at least one of the
beams that form the sensing area.
As shown in Fig. 1, the resolution depends exclusively on the
geometrical properties of the lenses, the diameter and the centre
distance; it is independent of the ambient and operating conditions
of the light curtain.
The resolution can be calculated using the following formula:
3
PSEN op 2/4 Series
Type 4
Type 4
Type 2 Type 4
Fig. 1
R = I + d