Applications Of The Safety Sensors - SICK IN4000 Direct Manual Del Usuario

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Chapter
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© SICK AG • Industrial Safety Systems • Germany • All rights reserved 8012183/2008-02-01
On safety
1.2

Applications of the safety sensors

The IN4000 Direct series safety sensors are inductive
safety proximity switches that are actuated by metal.
The safe state is the switched off state (unpowered
state: logical "0" on an OSSD):
Using the IN4000 Direct series safety sensors and the
related machine or plant controller, e.g., movable
guards can be secured 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 sensors, a risk assess-
ment must be performed on the machine as per:
EN ISO 13849-1, Safety of machinery, Safety-
related parts of control systems
EN 62061, Safety of machinery. Functional safety
of safety-related electrical, electronic and
programmable electronic control systems
EN 1050, Safety of machinery, principles of risk
assessment
EN 12100, Safety of machinery, basic concepts
Correct use includes observance of the applicable
requirements on installation and operation, in
particular
EN 1088, Safety of Machinery. Interlocking devices
associated with guards. Principle for design and
selection
Operating Instructions
IN4000 Direct