Safety function blocks
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02/16 MN05013001Z EN
Example 2 - Architecture of Category 4 according to
EN ISO 13849-1
Monitoring of a 2-channel light curtain and cross-circuit
monitoring of its external wiring. The interruption of the light
curtain triggers the protective function. After the area moni-
tored by the light curtain is vacated, the controlled re-
enabling is completed by actuating the Reset key switch. The
discrepancy time is set to 0.5 seconds.
The make contacts of the light curtain -B1 are connected to
the device terminals IS2 and IS3 and are supplied with test
signals T3 and T4. Test signal T2 supplies the Reset button -
S1 connected to IS6. The safety device outputs QS2 and QS4
switch the contactors Q1 and Q2 directly.
This looks as follows in the electrical circuit diagram:
Summary of Contents for easySafety
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