Lenze EDB9300UES - Manual (Page 93)

Transport, Installation and Connection
88 BA8230
3.7 Specific measures for Depending on the environment, optional measures are necessary to
ensuring electromagnetic comply with the EMC radiated interference conditions for drive converters.
compatibility (EMC)
IEC1800-3/prEN61800-3 (IEC 22G/21/CDV); Industrial:
To comply with the EMC requirements, no further options are required for radio
interference suppression in addition to special consideration of the installation
regulations and the instructions given in this documentation together with installation
of mains chokes (3-phase chokes) and the use of screened control cables.
A RFI filter is recommended when using screened motor cables of above 50 m in
length.
If other equipment which does not meet the interference resistance requirements of
this product standard or the values according to EN50082-2 is installed on the same
mains supply, radio interference measures are to be co-ordinated with the mains
operator (IEC1800-3 / prEN61800-3 / IEC 22G/21/CDV).
Increasing the interference resistance of low power equipment is often far less
complex or expensive. In industry it is therefore more economical to increase
interference resistance than to reduce the radiated interference. In industry the EMC
of the units should be based on a balanced mix of radiated interference and
interference resistance.
IEC1800-3/prEN61800-3 (IEC 22G/21/CDV)
Residential, business and trade facilities as well as small businesses on the public
electricity supply network.
A RFI filter is required in addition to the measures described for industry. Only the RFI
filters stated in this operating manual guarantee compliance with the radio
interference voltage according to limit EN55011 Class A (CISPR11 Class A). To meet
these limits for radiated interference it is assumed that the cubicles used for the 8230
frequency inverter provide direct contact with the cubicle frame over the entire
circumference of the side and rear panels. High coupling attenuation resistance is
achieved by the cubicle function earth. In general no HF seals are required in cubicle
doors for standard applications since the wavelength of the relevant radiated
interference to be screened is approx. 0.5 ... 10 m. Screened copper-armoured motor
cables of type NYCWY or -730CY with a good, low-impedance earth at both ends are
to be used. The length of this motor connection cable may not exceed 150 m without
taking into account further ancillary factors such as earth fault conditions and the
system configuration. The cables to the braking resistor are to be screened.
EMC radiated interference to DIN EN 50081 Part 2: Limit EN55011 Group 1,
Class A (CISPR11 Class A)
The measures stated in the last section to meet the limits for the public electricity
supply network are required for compliance with this basic EMC standard.
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