Eaton easySafety Manual page 405

02/16 MN05013001Z EN
Example 1 - Architecture of Category 2 according to
EN ISO 13849-1
Access control of an area with a 2-channel light curtain.
Interruption of the light beam removes the enable, the re-
enabling is automatic and without a manual startup after the
protected area is vacated. The monitoring of the discrepancy
time is set to 1 second and a startup test is to be carried out
after every RUN/STOP change of the device.
h Using suitable measures, ensure that any hazard is
excluded after automatic re-enabling.
The enable contacts of the light curtain are connected to IS2
and IS3, the safety relay output QS1 switches contactor Q1
directly.
This looks as follows in the electrical circuit diagram:
LC, light curtain
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