5
Installation guidelines
5.1 Basic rules for the EMC-equitable assembly of installations
The installation guidelines contain information about the interference
free deployment of a PLC system. There is the description of the
ways, interference may occur in your PLC, how you can make sure
the electromagnetic compatibility (EMC), and how you manage the
isolation.
Electromagnetic compatibility (EMC) means the ability of an electrical
device, to function error free in an electromagnetic environment
without being interfered respectively without interfering the environ-
ment.
The components of VIPA are developed for the deployment in indus-
trial environments and meets high demands on the EMC. Neverthe-
less you should project an EMC planning before installing the compo-
nents and take conceivable interference causes into account.
Electromagnetic interferences may interfere your control via different
ways:
n
Electromagnetic fields (RF coupling)
n
Magnetic fields with power frequency
n
Bus system
n
Power supply
n
Protected earth conductor
Depending on the spreading medium (lead bound or lead free) and
the distance to the interference cause, interferences to your control
occur by means of different coupling mechanisms.
There are:
n
galvanic coupling
n
capacitive coupling
n
inductive coupling
n
radiant coupling
General
What does EMC mean?
Possible interference
causes
VIPA HMI PPC021 CE
Installation guidelines
Basic rules for the EMC-equitable assembly of installations
HB160 | PPC | 67S-PNJ0 | GB | 15-30
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