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4. Take measures to minimize interference that is frequently coupled in through
installation cables.
• Separate interfering cables with 0.25m minimum from cables susceptible to
interference. A particularly critical point is laying parallel cables over longer
distances. If two cables intersect (one crosses over the other), the interference is
smallest if they intersect at an angle of 90°. Cables susceptible to interference
should therefore only intersect motor cables, intermediate circuit cables, or the
wiring of a rheostat at right angles and never be laid parallel to them over
longer distances.
5. Minimize the distance between an interference source and an interference sink
(interference- threatened device), thereby decreasing the effect of the emitted
interference on the interference sink.
• You should use only interference-free devices and maintain a minimum distance
of 0.25 m from the adjustable frequency inverter.
6. Follow safety measures in the filter installation.
• If using external EMC filter, ensure that the ground terminal (PE) of the filter is
properly connected to the ground terminal of the adjustable frequency inverter.
An HF ground connection via metal contact between the housings of the filter
and the adjustable frequency inverter, or solely via cable shield, is not permitted
as a protective conductor connection. The filter must be solidly and permanently
connected with the ground potential so as to preclude the danger of electric
shock upon touching the filter if a fault occurs.
To achieve a protective ground connection for the filter:
• Ground the filter with a conductor of at least 10 mm
2
cross-sectional area.
• Connect a second grounding conductor, using a separate grounding terminal
parallel to the protective conductor. (The cross section of each single protective
conductor terminal must be sized for the required nominal load.)
Integrated EMC Filter
The X200 series inverters for European market (-SFE, and HFE models) have
integrated filter complies to EN61800-3 as shown below.
200V class (-SFE models) – EN61800-3 category C1
400V class (-HFE models) – EN61800-3 category C2
Please refer to the next page for the installation.
D
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3
Appendix D