IEC 61010-2-201:2017 (Second Edition) / EN 61010-2-201:2017
(Note: These standards were supplemented by IEC 61010-1:2010 (Third Edition) / EN
61010-1:2010)
12.1.3 Electromagnetic Compatibility
Introduction
This chapter provides you with information on the immunity to interference of the described
components as well as on radio interference suppression.
The described components meet, among others, the requirements of the EMC legislation of the
European single market.
Definition: EMC
Electromagnetic compatibility (EMC) is the capacity of an electrical installation to function
satisfactorily in its electromagnetic environment without affecting that environment.
EMC in accordance with NE21
The S7 CPU 410-5H automation system with connected CFU meets the EMC requirements
according to NAMUR Guideline NE21.
Pulse-shaped Interference
The table below shows the electromagnetic compatibility of the described components with
regard to pulse-shaped interference. The prerequisite for this is that the system complies with
the relevant requirements and guidelines relating to electrical equipment.
Pulse-shaped disturbance Tested at
Electrostatic discharge according to
IEC 61000-4-2
8 kV
6 kV
Burst impulses (fast transient interfer‐
ence) according to IEC 61000-4-4
2 kV (supply line)
2 kV (signal line)
High-energy current surge according to IEC 61000‑4‑5
The subsequent information for protective circuiting applies for the following unshielded connection
cables to the CFU:
● Power cable
● Freely configurable channels
Protection element selection: See the documentation SIMATIC; S7-1500, ET 200MP, ET 200SP, ET
200AL; Designing interference-free controllers (http://support.industry.siemens.com/cs/document/
59193566); Section "Lightning protection and overvoltage protection"
● Asymmetric interference ● 1 kV (without protective element)
● 2 kV (with protective elements)
Technical specifications
12.1 General technical specifications
SIMATIC CFU
158 Commissioning Manual, 08/2019, A5E39252870-AD
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