PN/BACnet LINK
52 Operating Instructions, 10/2017, A5E39895543-AA
Safety instructions and guidelines
Safety information
Connection only over safety extra-low voltage / protective extra-low voltage
May cause death or serious injury
The device is designed for operation using directly connectable safety extra-low voltage
(SELV) with safe electrical separation according to IEC 60950-1 / EN 60950-1 / VDE 0805-
1 or IEC 61131-2 / EN 61131-2 / DIN EN 61131-2.
To maintain the safety property of the low voltage circuits of the PN/BACnet LINK, the 24 V
rated power supply as well as external connections to communication ports must be
supplied from reliable sources that meet the requirements for SELV / PELV limited voltage
sources according to different standards.
Therefore only connect safety extra-low voltages (SELV) with safe electrical separation
according to IEC 60950-1 / EN 60950-1 / VDE 0805-1 to the supply voltage connections
and the communications interfaces.
Working on the device or on connected components
Risk of electric shock
May cause death or serious injury
• Voltages > 60 V DC or 30 V AC are present in the control cabinet. Therefore appropriate
safety precautions must be taken to prevent contact during commissioning and
maintenance work.
• Before carrying out any work on the PN/BACnet LINK or on connected components,
make sure that the installation is in a zero-voltage state.
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