Safety Light Curtain
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5.1.3.2.1 Safety Clearance for Vertical Approach to the Safety Field
a [mm] = height of the danger zone
b [mm] = height of the top edge of the safety field
H [mm] = reference height, height of the
safety field above ground
NOTE!
• If H
≤
300 mm
, the danger that access to the danger zone from underneath the safety
field may go
undetected must be avoided.
• If H < 200 mm
, the danger that access to the danger zone by children from under-
neath the safety field may go undetected must be avoided.
• Height of topmost beam
≤
900 mm
, the danger of the safety field being stepped over
must be prevented.
We differentiate between two different safety clearances when calculating vertical safety fields.
•
S
RT
Safety clearance for access through the safety field
•
S
RO
Safety clearance for access over the safety field
Both of these must be calculated.
The larger of the two values S
RT
and S
RO
must be used.
S
H
a
C
RO
K×T
b
Danger zone boundary
