Siemens S7-1500 - Connecting; Safety regulations

SIMATIC TOP connect for S7-1500 and ET200MP
Manual,
19
Connecting
4
4.1
Safety regulations
Introduction
When used in plants or systems, SIMATIC TOP connect system cabling is subject to special
rules and regulations in line with the area of application.
This section provides an overview of the most important rules for connecting SIMATIC TOP
connect.
Rules and regulations governing the integration of the S7-1500 into a plant or system can
also be found under "Rules and regulations" in the S7-1500 system manual
(http://support.automation.siemens.com/WW/view/en/59191792
).
Specific application
Please observe the safety and accident prevention regulations that apply to specific
applications, for example, the machinery directives.
Supply voltage
Please note the following points about line voltage:
● For stationary plants and systems without an all-pole line disconnector, there must be a
disconnector unit (all-pole) fitted in the building installation.
● Any fluctuation/deviation in the line voltage from the rated value must be within the
permitted tolerance for all S7-1500 electric circuits.
24 V DC supply
Please note the following points for 24 V DC supply:
● Power supplies for 24 V DC must have secure electrical isolation in accordance with IEC
60364-4-41.
● Surge arrestors must be fitted to protect against lighting and overvoltage.
You will find components for lightning and overvoltage protection in the "Designing
interference-free controllers" function manual
(http://support.automation.siemens.com/WW/view/en/59193566
).