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 environment.
The VIPA components are developed for the deployment in industrial environments and
meets high demands on the EMC. Nevertheless you should project an EMC planning
before installing the components 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
The following table shows the four different coupling mechanisms, their causes and pos-
sible interference sources.
Coupling mechanism
Cause
Typical source
Galvanic coupling
Galvanic or metallic coupling always
occurs, when two current circuits have
a common line.
n
Pulsed devices (Net influence from
transducers and foreign net
devices)
n
Starting motors
n
Different potential of component
cubicles with common current
supply
n
Static discharges
General
What does EMC mean?
Possible interference
causes
Coupling mechanisms and
interference sources
VIPA HMI
Installation guidelines
Basic rules for the EMC-equitable assembly of installations
HB160 | PPC | 67P-RSL0 | en | 20-20
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Summary of Contents for 67P-RSL0
Page 1: ...PPC 67P RSL0 Manual HB160 PPC 67P RSL0 en 20 20 VIPA HMI Panel PC PPC015 ES...
Page 13: ...VIPA HMI Hardware description Structure Interfaces HB160 PPC 67P RSL0 en 20 20 13...
Page 67: ...Appendix VIPA HMI Appendix HB160 PPC 67P RSL0 en 20 20 67...
Page 68: ...Content A History of changes 69 VIPA HMI Appendix HB160 PPC 67P RSL0 en 20 20 68...