Testing The Emc-Compatibility Of An Installation - Pilz PSS Series Installation Manual

Testing the EMC-compatibility of an installation

Use the following list to check that the safety system has been installed to
conform with EMC-regulations.
Check
Before installation:
Are there areas with a high
probability of interference? protection in these areas.
(e.g. computers running,
process control areas,
distribution cabinets, cable
casing, frequency converters,
hand-held radios etc.)
Are areas where computers If necessary shield the whole
are running and areas such area.
as process control rooms
sufficiently shielded from
electromagnetic coupling?
Have you, or the installer,
sufficient knowledge where cables close to earth, keep clear
cable layout is concerned? of other electrical equipment,
Is the supply voltage free
of interference?
EMC characteristics of
individual units / all
units once installed?
Installation Manual: PSS 3056 Series
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Action
Make detailed plans for EMC
Some important points: Lay
keep cables in ducts separate
from other parts of the
installation, keep cables as short
as possible.
Build in a mains filter where
interference may occur.
Test under operating conditions,
e.g. while hand-held radios are in
use, or HF frequency generators
are close by. Test static discharge
with operating personnel, test
mutual interference between
units under different operating
conditions.
Done
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