wohner MOTUS IO-Link Betriebsanleitung Seite 38

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Single-channel switch-off for multiple MOTUS IO-Link devices
Single-channel switch-off of hybrid motor starters via EN+ with fault exclusion
Single-channel switch-off of hybrid motor starters via EN- with fault exclusion
Since in these examples the control supply voltage or control voltage of the hybrid motor
starter is cut off using a single channel only, this type of installation is only permissible in
accordance with SIL 3 (category 3), if a fault exclusion for cross-fault short circuits is
permissible. This will be the case, for example, when the hybrid motor starter and the
safety relay are installed in the same cabinet.
If this type of fault exclusion is not permissible, the voltage must be cut off using two
channels or two poles.
Revision 1, dated 01/2021 15