Danfoss VLT FC 360 Design Manual

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Danfoss VLT FC 360 Design Manual Manual pdf 13 page image

Danfoss specifies which our different products complywith.Danfoss provides other types of assistance that can helpyou obtain the best EMC result.1.5.4 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. Itmust be noted that the responsibility for the final EMCproperties of the appliance, system or installation restswith the installer. As an aid to the installer, Danfoss hasprepared EMC installation guidelines for the Power Drivesystem. The standards and test levels stated for PowerDrive systems are complied with, provided that the EMC-correct instructions for installation are followed, see2.6.3 Immunity Requirements.1.6 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.1.6.1 Aggressive EnvironmentsA frequency converter contains a large number ofmechanical and electronic components. All are to someextent vulnerable to environmental effects.CAUTIONFrequency converters in environments with airborneliquids, particles, or gases capable of affecting anddamaging the electronic components. Failure to take thenecessary protective measures increases the risk ofstoppages, thus reducing the life of the frequencyconverter.Degree of protection as per IEC 60529Liquids 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 ratingIP54/55. As an extra protection, all printed circuit boardsare coated.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 ratingIP54/55 or a cabinet for IP00/IP20/TYPE 1 equipment.In environments with high temperatures and humidity,corrosive gases such as sulphur, nitrogen, and chlorinecompounds will cause chemical processes on thefrequency converter components.Chemical reactions will 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.As an extra protection all printed circuit boards are coatedNOTEMounting frequency converters in aggressive environmentsincreases the risk of stoppages and considerably reducesthe life of the 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.1.6.2 Vibration and ShockThe frequency converter has been tested according to theprocedure based on the shown standards:The frequency converter complies with requirements thatexist for units mounted on the walls and floors ofproduction premises, as well as in panels bolted to walls orfloors.• IEC/EN 60068-2-6: Vibration (sinusoidal) - 1970• IEC/EN 60068-2-64: Vibration, broad-band randomIntroduction VLT® AutomationDrive FC 360 Design GuideMG06B202 - VLT® is a registered Danfoss trademark 111 1