What Is Covered; Danfoss Vlt Adjustable Frequency Drive And Ce Labeling - Danfoss VLT AutomationDrive FC 300 Design Manual

FC 300 Design Guide
an adjustable frequency drive is supplied for use in a machine, we provide information on safety aspects
relating to the adjustable frequency drive. We do this by means of a manufacturer's declaration.
The low-voltage directive (73/23/EEC)
Adjustable frequency drives must be CE-labeled in accordance with the low-voltage directive of
January 1, 1997. The directive applies to all electrical equipment and appliances used in the
50 - 1000 V AC and the 75 - 1500 V DC voltage ranges. Danfoss CE-labels in accordance with
the directive and issues a declaration of conformity upon request.
The EMC directive (89/336/EEC)
EMC is short for electromagnetic compatibility. The presence of electromagnetic compatibility means that the
mutual interference between different components/appliances does not affect the way the appliances work.
The EMC directive came into effect January 1, 1996. Danfoss CE-labels in accordance with the directive and
issues a declaration of conformity upon request. To carry out EMC-correct installation, see the instructions in
this Design Guide. In addition, we specify which standards our products comply with. We offer the filters
presented in the specifications and provide other types of assistance to ensure the optimum EMC result.
The adjustable frequency drive is most often used by professionals of the trade as a complex component
forming part of a larger appliance, system or installation. It must be noted that the responsibility for
the final EMC properties of the appliance, system, or installation lies with the installer.

What Is Covered

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The EU "Guidelines on the Application of Council Directive 89/336/EEC" outline three typical situations
of using an adjustable frequency drive. See following for EMC coverage and CE labeling.
The adjustable frequency drive is sold directly to the end consumer. The adjustable frequency drive is
1.
for example sold to a DIY market. The end consumer is a layman. He installs the adjustable frequency
drive himself for use with a hobby machine, a kitchen appliance, etc. For such applications, the
adjustable frequency drive must be CE-labeled in accordance with the EMC directive.
The adjustable frequency drive is sold for installation in a plant. The plant is built up by professionals of the
2.
trade. It could be a production plant or a heating/ventilation plant designed and installed by professionals
of the trade. Neither the adjustable frequency drive nor the finished plant must be CE-labeled under the
EMC directive. However, the unit must comply with the basic EMC requirements of the directive. This is
ensured by using components, appliances, and systems that are CE-labeled under the EMC directive.
3. The adjustable frequency drive is sold as part of a complete system. The system is being marketed
as complete and could be e.g. an air conditioning system. The complete system must be CE-labeled
in accordance with the EMC directive. The manufacturer can ensure CE labeling under the EMC
directive either by using CE-labeled components or by testing the EMC of the system. If it chooses
to use only CE-labeled components, it does not have to test the entire system.
Danfoss VLT Adjustable Frequency
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Drive and CE Labeling
CE labeling is a positive feature when used for its original purpose, i.e. to facilitate trade within the EU and EFTA.
However, CE labeling may cover many different specifications. Thus, you must check
what a given CE label specifically covers.
The covered specifications can be very different and a CE label may therefore give the installer a false sense
of security when using an adjustable frequency drive as a component in a system or an appliance.
Danfoss CE labels the adjustable frequency drives in accordance with the low-voltage directive.
This means that if the adjustable frequency drive is installed correctly, we guarantee compliance
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Introduction to FC 300
MG.33.B3.22 - VLT is a registered Danfoss trademark