Connecting; Safety Instructions And Guidelines - Siemens Simatic Operating Instructions Manual

Connecting

7.1

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 obtain the safe property of low-voltage circuits of the PN/CAN LINK, the 24 V rated
voltage supply and external connections to communication interfaces must be supplied
from approved sources that meet requirements set forth by various standards for
SELV/PELV voltage-limited sources.
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
• Before working on the PN/CAN LINK or the connected components, ensure the system
SIMATIC PN/CAN LINK
Operating Instructions, 03/2018, A5E39895388-AB
WARNING
WARNING
safety precautions must be taken to prevent contact during commissioning and
maintenance work.
is disconnected.
7
65