Danfoss FC 102 Design Manual

Also see for VLT HVAC Drive FC 102: Operating instructions Service guide Programming guide Installation guide Installation guide

Contents

Danfoss CE labels the frequency converters in accordancewith the low-voltage directive. This means that if thefrequency converter is installed correctly, Danfossguarantees compliance with the low-voltage directive.Danfoss issues a declaration of conformity that confirmsour CE labelling in accordance with the low-voltagedirective.The CE label also applies to the EMC directive providedthat the instructions for EMC-correct installation andfiltering are followed. On this basis, a declaration ofconformity in accordance with the EMC directive is issued.This Design Guide offers detailed instructions for installationto ensure EMC-correct installation. Furthermore, Danfossspecifies which the different products comply with.Danfoss provides other types of assistance that can helpobtaining the best EMC result.2.2.4 Compliance with EMC Directive2004/108/ECAs mentioned, the frequency converter is mostly used byprofessionals of the trade as a complex componentforming part of a larger appliance, system, or installation.Note that the responsibility for the final EMC properties ofthe appliance, system or installation rests with the installer.As an aid to the installer, Danfoss has prepared EMC instal-lation guidelines for the Power Drive system. The standardsand test levels stated for Power Drive systems arecomplied with, provided that the EMC-correct instructionsfor installation are followed, see .2.3 Air humidityThe frequency converter has been designed to meet theIEC/EN 60068-2-3 standard, EN 50178 pkt. 9.4.2.2 at 50 °C.2.4 Aggressive EnvironmentsA frequency converter contains a large number ofmechanical and electronic components. All are to someextent vulnerable to environmental effects.CAUTIONDo no install the frequency converter in environmentswith airborne liquids, particles, or gases capable ofaffecting and damaging the electronic components.Failure to take the necessary protective measuresincreases the risk of stoppages, thus reducing the life ofthe frequency converter.Degree of protection as per IEC 60529The Safe Torque Off function may only be installed andoperated in a control cabinet with degree of protectionIP54 or higher (or equivalent environment). This is requiredto avoid cross faults and short circuits between terminals,connectors, tracks and safety-related circuitry caused byforeign objects.Liquids can be carried through the air and condense in thefrequency converter and may cause corrosion ofcomponents and metal parts. Steam, oil, and salt watermay cause corrosion of components and metal parts. Insuch environments, use equipment with enclosure rating IP54/55. As an extra protection, coated printed circuit boardscan be ordered as an option.Airborne particles such as dust may cause mechanical,electrical, or thermal failure in the frequency converter. Atypical indicator of excessive levels of airborne particles isdust particles around the frequency converter fan. In verydusty environments, use equipment with enclosure ratingIP 54/55 or a cabinet for IP 00/IP 20/TYPE 1 equipment.In environments with high temperatures and humidity,corrosive gases such as sulphur, nitrogen, and chlorinecompounds cause chemical processes on the frequencyconverter components.Such chemical reactions rapidly affect and damage theelectronic components. In such environments, mount theequipment in a cabinet with fresh air ventilation, keepingaggressive gases away from the frequency converter.An extra protection in such areas is a coating of theprinted circuit boards, which can be ordered as an option.NOTICEMounting frequency converters in aggressiveenvironments increases the risk of stoppages and consid-erably reduces the life of the frequency converter.Before installing the frequency converter, check theambient air for liquids, particles, and gases. This is done byobserving existing installations in this environment. Typicalindicators of harmful airborne liquids are water or oil onmetal parts, or corrosion of metal parts.Excessive dust particle levels are often found on instal-lation cabinets and existing electrical installations. Oneindicator of aggressive airborne gases is blackening ofcopper rails and cable ends on existing installations.D and E enclosure types have a stainless steel back-channel option to provide additional protection inaggressive environments. Proper ventilation is still requiredfor the internal components of the frequnecy converter.Contact Danfoss for additional information.Introduction to VLT® HVAC D... Design GuideMG11BC02 Danfoss A/S © Rev. 06/2014 All rights reserved. 132 2