Lenze EDB9300UES - Manual (Page 84)

Transport, Installation and Connection
BA8230 79
3.6 Installation and connection Fig.39 shows an example of an ideal layout for a 8230 frequency inverter with
instructions for EMC EMC components.
Fig.39: Example of cubicle layout, 8230 frequency inverter
Note:
The overview in Fig.39 illustrates the ideal position of components relevant to EMC.
In order to achieve good EMC in the drive system the following basic rules are
recommended for cubicle construction, installation and layout.
These measures are to be considered part of industrial EMC installation practice and
are summarised here.
•
Function earth
All inactive metal parts are to be well connected. Inactive metal parts are all
conducting parts which are electrically separated from active parts by at least basic
insulation and can only carry a voltage if a fault occurs.
The function earth for the 8230 frequency inverter cubicle is most effectively
provided by low-impedance connection (bare metal, low HF resistance, generous
connections) of cubicle parts with the frames and inactive parts of the building
(armouring and steel supports) which are to be included in potential compensation
of the entire system. In addition to the screw connections for parts, broad flat bands
with a large surface area are suitable as low-impedance connections. As far as
possible parts made of aluminium should be used only to a limited extent and fitted
using contact protection grease.
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