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6.3 Vertical installation of the safety light curtains / light grids
6.3.1 Safety light curtains resolutions 30 mm and 40 mm
These designs are suitable for access prevention of hands (hand
protection).
They must not be used for finger protection!
The minimum safety distance (S) is determined using the
following formula:
S = 2000 (t
1
+ t
2
) + 8 (d - 14)
This formula applies to minimum safety distances (S)
between 100 and 500 mm. If the calculation shows that S
is greater than 500 mm, the distance can be reduced to a
minimum value of 500 mm by using the following formula:
S = 1600 (t
1
+ t
2
) + 8 (d - 14)
A = hazardous area
H = height
S = min. safety distance
G = reference level
If due to the special configuration of the machine it should be possible to reach
the hazardous area from above, the highest light beam of the safety light curtain
should be at a height (H) (measured from the reference level (G)) whose value is
determined to the specifications in ISO 13855.
