Siemens Simatic 6ES7 157-0AC80-0 A0 Series, Manual

Page: 129 / 182

Technical Specifications
B-7
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
B.1.3 Electromagnetic compatibility
Introduction
This chapter contains data on the interference immunity of the described
components and on RFI suppression.
The described components meet the requirements of the European EMC
legislation for the single market.
Definition of “EMC”
Electromagnetic compatibility (EMC) is the capacity of a piece of electrical
equipment to function in a satisfactory manner in its electromagnetic environment
without affecting this environment.
Pulse-type interference
The table below shows the electromagnetic compatibility of the described
components with respect to pulse-type interference. The prerequisite for this is that
the system meets and complies with the relevant requirements and guidelines
relating to electrical equipment.
Table B-2 Pulse-type interference
Pulse-type interference Tested at Corresponds to
severity of
Electrostatic discharge in accordance with
IEC 61000-4-2 8 kV
4 kV
3 (air discharge)
2 (contact
discharge)
Burst impulse (rapid transient
interference) in accordance with IEC
61000-4-4 2 kV (supply line)
2 kV (signal line)
3
High energy single pulse (surge) in accordance with IEC 61000-4-5
External RC circuit is required (see installation manual entitled Automation System S7-300,
Installation, Section “Lightning protection and surge protection”)
Asymmetric interference 2 kV (supply line)
2 kV (signal line/
data line) 3
Symmetric interference 1 kV (supply line)
1 kV (signal line/
data line)