13
VERTICAL POSITION OF THE SAFETY LIGHT CURTAIN / LIGHT GRID
Systems with a resolution of 30 mm or 40 mm
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)
The minimum safety distance S is always 500 mm.
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 16
Systems with resolution of 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 must not be less than 900 mm,
while height H of the lowest beam must not exceed
300 mm.
Figure 17
Light
curtain
Dangerous
point
Reference surface (G)
Direction
of approach
Light
curtain
Dangerous
point
Direction of
approach
Reference surface (G)
Содержание SLC 415
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