Danfoss Vlt Adjustable Frequency Drive And Ce Labeling; Compliance With Emc Directive 89/336/Eec; Air Humidity - Danfoss FC 300 Design Manual

FC 300 Design Guide
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
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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
with the low-voltage directive. Danfoss issues a declaration of conformity that confirms our
CE labeling in accordance with the low-voltage directive.
The CE label also applies to the EMC directive provided that the instructions for EMC-correct installation and
filtering are followed. On this basis, a declaration of conformity in accordance with the EMC directive is issued.
The Design Guide offers detailed instructions for installation to ensure EMC-correct installation.
Furthermore, Danfoss specifies which our different products comply with.
Danfoss gladly provides other types of assistance that can help you obtain the best EMC result.

Compliance with EMC Directive 89/336/EEC

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As mentioned, the adjustable frequency drive is mostly 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.
As an aid to the installer, Danfoss has prepared EMC installation guidelines for the Power Drive System.
The standards and test levels stated for Power Drive Systems are complied with, provided that the
EMC-correct instructions for installation are followed, see section Electrical Installation.

Air Humidity

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The adjustable frequency drive has been designed to meet the IEC/EN 60068-2-3 standard,
EN 50178 pkt. 9.4.2.2 at 122 °F (50°C).
Introduction to FC 300
MG.33.B6.22 - VLT is a registered Danfoss trademark
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