Electromagnetic Compatibility - Siemens SIMATIC Operating Instructions Manual
Distributed i/o fail-safe engineering et 200pro distributed i/o system - fail-safe modules
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General Technical Specifications
6.2 Electromagnetic Compatibility
Requesting TÜV Certificate
You can request copies of the TÜV certificate and the accompanying report at the following
address:
Siemens Aktiengesellschaft
Automation and Drives
A&D AS RD ST Type Test
P.O. Box 1963
D-92209 Amberg
Federal Republic of Germany
6.2
Electromagnetic Compatibility
Introduction
This chapter presents information about the interference immunity of fail-safe modules and
information about RFI suppression.
Definition of EMC
Electromagnetic compatibility is the ability of an electrical device to function satisfactorily in
its electromagnetic environment without interfering with that environment.
The fail-safe modules meet the requirements of the European Union's EMC law, for
example. This requires that the
and directives concerning electrical installation.
Pulse-Shaped Interference
The following table shows the electromagnetic compatibility of the fail-safe modules relative
to pulse-shaped interference.
Pulse-shaped interference
Electrostatic discharge in
accordance with IEC 61000-4-2
(DIN VDE 0843 Part 2)
Burst pulses (rapid transient
interference) in accordance with
IEC 61000-4-4
(DIN VDE 0843 Part 4)
Surge in accordance with IEC 61000-4-5 (DIN VDE 0839 Part 10)
Degrees of severity 2 and 3 require an external protective circuit (see
section further down).
42
ET 200pro Distributed I/O System
Tested with
8 kV
6 kV
2 kV (supply line)
2 kV (signal line)
ET 200pro Distributed I/O System - Fail-Safe Modules
Operating Instructions, 05/2007, A5E00394073-02
meets the specifications
Degree of severity
3 (air discharge)
3 (contact discharge)
3
4
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