4 PKE-SWD-32, interface for motor-starter combination with PKE PKE12/32
4.3 Engineering
SmartWire-DT module IP20 01/20 MN05006001Z-EN www.eaton.com 95
4.3.3 Safety-related applications
For most applications, disconnection in the event of an emergency or the dis-
connection by the opening of the protective doors is also required in addition
to normal operational switching.
The SmartWire-DT system is not designed for the transfer of safety relevant
signals. Using the following configuration the system SmartWire-DT can
however be used for safety relevant switch-offs.

DANGER
In safety-relevant applications the power supply unit providing
power to the SmartWire-DT system must feature a PELV power
supply unit.
ACHTUNG
The cable connection to the emergency switching off pushbut-
ton must meet one of the following criteria in order to exclude
short-circuits between the conductors (see EN ISO 13849-2,
chap. D5.2):
• Cables must be laid permanently and protected against
external damage (e.g. with cable duct, or hard PVC conduit).
• The cables are provided as various non-metallic-sheathed
cables.
• The cables are located inside an electrical mounting area
(e.g. switch cabinet).
• The cables are protected by a ground connection.
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