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5.1.3 EMC guide line
Drives are designed to operate in an industrial environment where a high level
of electromagnetic interference are to be expected. Proper installation practices
will ensure safe and trouble-free operation. If you encounter problems, follow the
Attention
guidelines which follow.
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For further information regarding electro-magnetic compatibility standards, according to Directive
Note!
89/336/EEC, conformity checks carried out on Gefran appliances, connection of filters and mains
inductors, shielding of cables, ground connections, etc., consult the "Electro-magnetic compatibility
guide" on the CD attached to this drive.
Check for all equipment in the cabinet are well grounded using short, thick
grounding cable connected to a common star point or busbar. Better solution
is to use a conductive mounting plane and use that as EMC ground reference
plane.
Flat conductors, for EMC grounding, are better than other type because they
have lower impedance at higher frequencies.
Make sure that any control equipment (such as a PLC) connected to the
inverter is connected to the same EMC ground or star point as the inverter via
a short thick link.
Connect the return ground from the motors controlled by the drives directly to
the ground connection (
Separate the control cables from the power cables as much as possible, using
separate trunking, if necessary at 90º to each other.
Whenever possible, use screened leads for the connections to the control
circuitry
Ensure that the contactors in the cubicle are suppressed, either with R-C
suppressors for AC contactors or 'fl ywheel' diodes for DC contactors fi tted to
the coils. Varistor suppressors are also effective. This is important when the
contactors are controlled from the inverter relay .
Use screened or armored cables for the motor connections and ground the
screen at both ends using the cable clamps
ADV200 • Quick start up guide - Specification and installation
) on the associated inverter.
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Troubleshooting
