Pilz PSEN op4H-s-30-150/1 - Manual (Page 12)

PSEN op4F/H-s Series Instruction Manual
8
Practical examples
Let's suppose to have a light curtain with height = 600 mm
To calculate the distance of the device from the AOPD, in a vertical
position, the following formula is used:
S = K*T + C
where:
T = t
1
+ t
2
t
1
= AOPD response time + PNOZsigma relay release time (max 80 ms)
t
2
= Machine total stopping time.
C = 8 * (d – 14) for devices with resolution <= 40 mm
D = resolution
In all cases, if K = 2000mm/sec then S > 500 mm. Distance will have
then to be recalculated using K = 1600 mm/sec.
PSEN op4F-s-14-060/1 PSEN op4H-s-30-060/1
T 0.393 sec 0.394 sec
C 0 mm 128 mm
S 641.6 mm 758.4 mm
WARNING: The reference standard is EN 999 “Machine safety - the
positioning of the protective device based on the approaching speed of
the human body”.
The following information is to be considered as indicative and
concise. For correct safety distance please refer to complete
standard EN-999.
1.4. Typical applications
The PSEN op4F/H-s FINGER safety light curtains provide solutions
in all automation fields where the access to dangerous areas has to
be controlled.
In particular, the safety curtains can be used in stopping moving
parts in:
- Automatic machines;
- Packaging and cutting machines;
- Textile, wood-working and ceramic machines;
- Automatic assembling lines;
- Milling, lathe and shearing machines;
- Bending and metal-working machines.”