Manipulation Prevention - SICK IN4000 Direct Manual Del Usuario

en
Chapter 3

WARNING
66
Product description
3.6

Manipulation prevention

The inductive safety switches react to metal objects.
Other metal objects that are not to trigger the safety
function must never reach 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 74).
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 74).
© SICK AG • Germany • All rights reserved
Operating instructions
IN4000 Direct
8012183/ZWH0/2018-06-05
Subject to change without notice