Electromagnetic Compatibility (Emc)6 - Emerson E Series Installation Manual

EN Series Drives Manual
Electromagnetic Compatibility (EMC)
The EN Drive is designed to high standards of EMC. Under extreme conditions
the EN Drive might cause or suffer from disturbance due to electromagnetic
interaction with other equipment. I t is the responsibility of the installer to
ensure that the equipment or system into which the EN Drive is incorporated
complies with the relevant EMC legislation in the country of use.
The following instructions provide you with installation guidance designed to
help you meet the requirements of the EMC Directive 89/336/EEC.
Although Emerson Motion Control cannot guarantee your system will meet
tested emission or immunity requirements, adhering to the following
guidelines will greatly improve the electromagnetic compatibility of your
system.
• C h o o s e an enclosure made of a conductive material such as steel,
aluminum or stainless steel.
• D e v i c e s mounted to the enclosure mounting plate, which depend on their
mounting surfaces for grounding, must have the paint removed from
their mounting surfaces and the mating area on the mounting plate to
ensure a good ground.
• I f grounding is required for cable grommets, connectors and/or conduit
fittings at locations where cables are mounted through the enclosure
wall, paint must be removed from the enclosure surface at the contact
points.
• A C line filter input and output wires and cables should be shielded, and
all shields must be grounded to the enclosure.
Although final responsibility for EMC compliance rest with the machine
builder, we are including the following installation suggestions. They describe
the components that were used and how they were installed during the EMC
compliance testing.
I f you need to meet EMC compliance requirements, EMI/RFI line filters must
be used to control conducted and radiated emissions as well as improve
conducted immunity.
Physical location of these filters is very important in achieving these benefits.
The filter output wires should be kept as short as possible (12" suggested) and
routed away from the filter input wires.
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