Applications Of The Safety Switches - SICK Stsndart IN4000 Instrucciones De Servicio

Operating Instructions
IN4000 Standard
© SICK AG • Industrial Safety Systems • Germany • Subject to change without notice • 8010934/YTC9/2016-04-01
On safety
2.2

Applications of the safety switches

The IN4000 Standard series safety switches are
inductive safety proximity switches that are actuated
by metal. The safe state is the isolated state.
Using the IN4000 Standard series safety switches and
the related machine or plant controller, e.g., movable
physical guards can be protected such that
• the dangerous state of the machine or system can
only be switched on when the guards are closed.
• a stop command is triggered if a guard is opened
with the machine running.
For the control this means that
• switch-on commands that produce dangerous
states are only allowed to become effective when
the protective devices are in the protective position,
and
• dangerous states must be terminated before the
protective position is left.
Prior to the use of the safety switches, a risk assess-
ment must be performed on the machine.
Correct use includes observance of the applicable
requirements on installation and operation.
The safety switches must be regularly subjected to a
technical inspection as per section 6.2.
Chapter 2
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