Pilz PSEN op2H Manuel D'utilisation page 52

Operating Manual
Note: The value of K is:
2000 mm/s, if the value calculated for S is ≤ 500 mm
1600 mm/s, if the value calculated for S is > 500 mm
If it is possible to access the danger zone from above and below (Fig.
6) and the devices used have a resolution of >40 mm, the upper beam
must be positioned at a height of ≥900 mm (H2), starting from the
reference plane (e.g. base of the machine), and the lower beam must
be positioned at a height of ≤300 mm (H1).
Where the light curtain must be installed horizontally (Fig.7), the
distance between the danger zone and the most distant optical beam
must equal the value calculated using the following formula:
S = 1600 mm/s (t
where:
S = Minimum safety distance in mm between the protected field
and the danger zone
t = ESPE reaction time in seconds (Ch. 9 "Technical details").
1
t = Machine's overrun time in seconds
2
H = The height of the beams above the floor. This height must
always be less than 1000 mm.
11
PSEN op2H Series
+ t ) + 1200 – 0.4 H
1 2
Fig. 7