51
5.6.4
Defining the reference boundary
Fig. 5.6-1:
Safeguarding of danger point based on hand and arm protection with
monitoring of a reference boundary
The reference boundary must cover at least two sides of the detection zone. The
detection zone itself must be defined in such a way that no gaps can arise through which
or over which a person could reach without being detected. The detection zone must
also provide safeguards against a person getting behind the barrier. This can be very
effectively managed by screening the sides of the danger zone. The reference boundary
should be defined with reference to the non-moving parts of the screen arrangement.
The detection zone must be defined as large enough to ensure an overlapping greater
than the tolerance zone of the reference boundary. The detection zone will then be
constantly monitored so that any body parts intruding or other manipulative intervention
will be detected beyond the possibility of doubt. In defining the reference boundary,
please also have regard to the indications given in the Operating Instructions for the
SIMATIC FS600 Parameterization Software LS4soft configuration and diagnosis
software.
a
= SIMATIC FS660I Laser Scanner
SF1 =
Detection zone 1, enabled
b
=
Reference boundary of the detection zone
SF2 =
Detection zone 2, disabled
S
=
Safety distance
G =
Danger point
m
=
Screen
e
=
Distance from the screen to the intrusion zone of the danger point, e > 150 mm (tolerance
zone); the reference boundary must be defined with reference to the screen.
SF1 SF2
SF1
b
b
S
G
m
a
a
G
G
m
e
e
e
Summary of Contents for SIMATIC FS600
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