Reer JANUS - Vertical Positioning of the Light Curtain

8540573 • 16/09/2016 • Rev.20 15
VERTICAL POSITIONING OF THE LIGHT CURTAIN
Models with resolution 30, 40mm.

These models are suitable for detecting the hands
The minimum safety distance S is calculated according
to the following formula:
S = 2000 (t
1
+ t
2
) + 8(D-14)
(D=resolution)
This formula is valid for distances S between 100 and
500 mm. If, according to the calculation, S exceeds 500
mm, the distance can be reduced up to a minimum of
500 mm using the following formula:
S = 1600 (t
1
+ t
2
) + 8 (D-14)
Where, due to the particular configuration of the
machine, it is possible to access the danger area from
above, the highest beam of the light curtain must be at a
height H of at least 1800 mm from the resting surface G
of the machine.
Figure 17
Models with resolution 90mm.

These models are suitable for detecting the arm or legs
and must not be used to detect the fingers or hands.
The minimum safety distance S is calculated according
to the following formula:
S = 1600 (t
1
+ t
2
) + 850
 In any case, the height H of the highest beam
from the reference surface G must not be less
than 900 mm while the height of the lowest
beam P must not exceed 300 mm.
Figure 18
Light
curtain
Dangerous
point
Reference surface
Direction
of approach
Light
curtain
Dangerous
point
Direction
of
approach
Reference surface