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VIPA System SLIO
Module failure
2.8 Installation guidelines
General
What does EMC mean?
Possible interference
causes
HB300 | CPU | 013-CCF0R00 | en | 16-40
Reason: At this position a module is placed, which does not correspond to the configured
module.
Remedy: Match configuration and hardware structure.
Behaviour: After PowerON all of the RUN LEDs up to the defective module are flashing.
With all following modules the MF LED is on and the RUN LED is off.
Reason: The module on the right of the flashing modules is defective.
Remedy: Replace the defective module.
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 components of VIPA 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
Power supply
n
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:
galvanic coupling
n
n
capacitive coupling
n
inductive coupling
n
radiant coupling
Basics and mounting
Installation guidelines
33
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