Wenglor SG4-I, Руководство по эксплуатации

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Approach/Reach-In Speed Constant K
Amongst other factors, safety clearance depends upon the maximum reach-in or walking speed of the person pen-
etrating the safety field.
Safety Margin C
Safety margin C depends upon the respective resolution of the light curtain..
3.3.1 Direction of Approach to the Safety Field
3.3.1.1 Perpendicular Approach to the Safety Field
The following equations apply: S = (K × T) + C or S = K × (t1 + t2) + C
Resolution d
≤ 40 mm > 40 mm
< 70 mm
> 70 mm
Margin C
8 (d – 14 mm) 850 mm 850 mm
Reach-in speed K
(per standard)
2000 mm/s at
S ≤ 500 mm
1600 mm/s at
S > 500 mm
1600 mm/s 1600 mm/s
Note Height of the
upper-most beam
from the floor ≥ 900
mm Height of the
lower-most beam
from the floor ≤ 300
mm ( ≤ 200 mm for
children)
Applicable
standards for
contactless safety
devices with several
individual beams
must be observed
A minimum clearance of S = 100 mm must be maintained (resolution
≤
14 mm)
A minimum clearance of S = 150 mm must be maintained (resolution
≤
30 mm)
3.3.1.2 Parallel Approach to the Safety Field
If the light curtain is installed as shown in the figure below, the height of the safety field from the floor may not exceed
1000 mm. If H is greater than 300 mm, access to the danger zone from underneath the safety field may go unde-
tected! In the case of children, undetected access may occur at a height of only 200 mm.
The lowest permissible safety field installation height H min depends upon the resolution of the safety light curtain,
in order to assure reliable detection of a human leg or ankle
The following equations apply: S = (K × T) + C or S = K × (t1 + t2) + C
Reference height H
200 mm < H < 1000 mm if H > 300
access to the danger zone from
underneath the safety field may go
undetected!
Margin C
1200 mm – 0,4 × H
Cmin
≥
850 mm
Reach-in speed K
1600 mm/s
Minimum height
Hmin
= 15 × (d – 50 mm)
Required safety light curtain resolution for any given height must thus be calculated as follows.
Resulting
resolution d
= H/15 + 50 mm
A minimal clearance of S = 850 mm must be maintained.
Safety clearance is the distance between the danger zone and the light curtain beam which is farthest from
the danger zone.
Werkzeug-Oberteil
Stoppsignal
Stillstand
Gefahrenbereichsgrenze
Werkzeug-Unterteil
S
H
Richtung des
Eindringens
Direction of
safety field
penetration
Stop Signal
Standstill
Tooling Top
Danger Zone Boundary
Tooling Base
Werkzeug-Oberteil
Stoppsignal
Stillstand
Gefahrenbereichsgrenze
Werkzeug-Unterteil
H
Richtung des
Eindringens
S
Grenze des
Schutzfeldes
Direction of
safety field
penetration
Stop Signal
Standstill
Tooling Top
Danger Zone Boundary
Tooling Base
Safety Field Limit