Manipulation Prevention - SICK Direct IN4000 Instrucciones De Servicio

Operating instructions
IN4000 Direct
WARNING
8012183/WI13/2013-01-15
Subject to change without notice
Product description
3.6

Manipulation prevention

The inductive safety switches react to metal objects.
It must be ensured that it is not possible to place
other metal objects that are not intended to trigger
the safety function on the sensing face of the safety
switches. Suitable measures must be taken to
prevent this situation arising.
The safety switch is protected against simple bypassing
with the following switching behavior:
• The output is operated without delay on the slow
approach of a metal object to the enable zone,
however this situation is only indicated by the signal
LED with a time delay of approx. 3 s. As a result the
object is in general in the near range zone before the
signal LED illuminates. The technical regulations in
relation to restarting the system are to be observed.
• If this object remains in the near range zone for
longer than approx. 2 s, the output is completely
inhibited and no longer enabled on activation in the
enable zone. If the object remains in the near range
zone for longer than approx. 5 s, the adjustment
mode is activated (see section 5.2 on page 172).
The enable zone can be unlocked either
• by means of de-activation
(IN40-E0101K: > 30 mm, IN40-E0109K: > 45 mm)
for a time of more than 2 s
or
• by interrupting the power supply (see section 5.2 on
page 172).
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