Wiring
7.1 Rules and regulations for operation
Automation system
150 System Manual, 01/2023, A5E03461182-AK
Protection against external electrical influences
To protect against electrical effects or faults, observe the following rules:
• The system for discharging electromagnetic interference must be connected to a
protective conductor with a sufficient cross-section for all plants with an S7-1500
automation system / ET 200MP distributed I/O system.
• You must ensure that all supply, signal and bus cables are correctly routed and installed.
• For signal and bus lines, a cable break, wire break or a cross circuit must not lead to
undefined states in the plant or system.
Reference
Additional information can be found in the function manual, Designing interference-free
controllers (https://support.automation.siemens.com/WW/view/en/59193566).
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