Emc Precautions - Danfoss VLT AutomationDrive Manual

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VLT AutomationDrive EtherNet/IP

EMC Precautions

The following EMC precautions are recommended in order to achieve interference-free operation of the
Ethernet network. Additional EMC information is available in the FC 300 series Design Guide.
N.B.:
Relevant national and local regulations, for example regarding protective earth connection,
must be observed.
The Ethernet communication cable must be kept away from motor and brake resistor cables to avoid
coupling of high frequency noise from one cable to the other. Normally a distance of 200 mm (8
inches) is sufficient, but maintaining the greatest possible distance between the cables is
recommended, especially where cables run in parallel over long distances. When crossing is
unavoidable, the Ethernet cable must cross motor and brake resistor cables at an angle of 90 degrees.
MG.90.Jx.02 ver. 5
AutomationDrive
min. 200 mm
90° crossing
th
September 2007 – VLT is a registered Danfoss trademark
VLT
Ethernet cable
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