2.1.2 Disposal InstructionEquipment containing electricalcomponents may not be disposed oftogether with domestic waste.It must be separately collected withelectrical and electronic waste accordingto local and currently valid legislation.2.2 CE Labelling2.2.1 CE conformity and labellingWhat is CE Conformity and Labelling?The purpose of CE labelling is to avoid technical tradeobstacles within EFTA and the EU. The EU has introducedthe CE label as a simple way of showing whether aproduct complies with the relevant EU directives. The CElabel says nothing about the specifications or quality ofthe product. Frequency converters are regulated by threeEU directives:The machinery directive (98/37/EEC)All machines with critical moving parts are covered by themachinery directive of January 1, 1995. Since a frequencyconverter is largely electrical, it does not fall under themachinery directive. However, if a frequency converter issupplied for use in a machine, we provide information onsafety aspects relating to the frequency converter. We dothis by means of a manufacturer's declaration.The low-voltage directive (73/23/EEC)Frequency converters must be CE labelled in accordancewith the low-voltage directive of January 1, 1997. Thedirective applies to all electrical equipment and appliancesused in the 50 - 1000V AC and the 75 - 1500V DC voltageranges. Danfoss CE-labels in accordance with the directiveand issues a declaration of conformity upon request.The EMC directive (89/336/EEC)EMC is short for electromagnetic compatibility. Thepresence of electromagnetic compatibility means that themutual 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 andissues a declaration of conformity upon request. To carryout EMC-correct installation, see the instructions in thisDesign Guide. In addition, we specify which standards ourproducts comply with. We offer the filters presented in thespecifications and provide other types of assistance toensure the optimum EMC result.The frequency converter is most often used by profes-sionals of the trade as a complex component forming partof a larger appliance, system or installation. It must benoted that the responsibility for the final EMC properties ofthe appliance, system or installation rests with the installer.2.2.2 What is CoveredThe EU "Guidelines on the Application of Council Directive89/336/EEC" outline three typical situations of using afrequency converter. See below for EMC coverage and CElabelling.1. The frequency converter is sold directly to theend-consumer. The frequency converter is forexample sold to a DIY market. The end-consumeris a layman. He installs the frequency converterhimself for use with a hobby machine, a kitchenappliance, etc. For such applications, thefrequency converter must be CE labelled inaccordance with the EMC directive.2. The frequency converter is sold for installation ina plant. The plant is built up by professionals ofthe trade. It could be a production plant or aheating/ventilation plant designed and installedby professionals of the trade. Neither thefrequency converter nor the finished plant has tobe CE labelled under the EMC directive. However,the unit must comply with the basic EMCrequirements of the directive. This is ensured byusing components, appliances, and systems thatare CE labelled under the EMC directive.3. The frequency converter is sold as part of acomplete system. The system is being marketedas complete and could e.g. be an air-conditioningsystem. The complete system must be CE labelledin accordance with the EMC directive. Themanufacturer can ensure CE labelling under theEMC directive either by using CE labelledcomponents or by testing the EMC of the system.If he chooses to use only CE labelledcomponents, he does not have to test the entiresystem.2.2.3 Danfoss Frequency Converter and CELabellingCE labelling is a positive feature when used for its originalpurpose, i.e. to facilitate trade within the EU and EFTA.However, CE labelling may cover many different specifi-cations. Thus, you have to check what a given CE labelspecifically covers.The covered specifications can be very different and a CElabel may therefore give the installer a false feeling ofsecurity when using a frequency converter as a componentin a system or an appliance.Danfoss CE labels the frequency converters in accordancewith the low-voltage directive. This means that if theIntroduction to VLT HVAC Ba... VLT HVAC Basic Drive Design GuideMG.18.C2.02 - VLT® is a registered Danfoss trademark 92 2