Assembly guidelines
Application Module FM 458-1 DP - User Manual 5-3
A5E01078222-02 Edition 03.2009
5.1.2 Introduction
Electromagnetic compatibility (EMC) is the ability of an electrical device
to function, fault-free in a specified electromagnetic environment without
influencing the environment in an inadmissible fashion.
This design- and EMC guideline supplements the documentation on the
individual components.
The FM 458-1 DP control system consists of individual components (e. g.
subracks, modules, interface modules, operator control panels, position
transmitters). The components can be installed in the widest range of
system configurations according to individual requirements. When the
components are arranged in a distributed fashion (decentral topology) a
noisy environment cannot be neglected. Thus, specific requirements are
placed on the design and EMC of the system.
EMC represents a quality feature for
Intrinsic noise immunity: Immunity against internal electrical noise
and disturbances
External noise immunity: Immunity against external electromagnetic
noise
Noise emission level: Influencing the environment due to
electromagnetic radiation
In order to achieve the highest possible operational reliability and safety
and noise immunity for a complete system (closed-loop control and drive
motor) the control manufacturer and user (including end customers) must
take certain measures.
Perfect functioning of FM 458-1 DP can only be guaranteed and the legal
requirements fulfilled (EC Directive 2004/108/EC „EMC guideline“) if all
of these measures are observed.
What is EMC?
Operational
reliability
and noise
immunity