Danfoss VLT FCM Series Manual

Also see for VLT FCM 305: Quick setup

Contents

VLT ® FCM SeriesAll about FCM300- EN 61000-3-2: Limits for harmonic currentemissions (equipment input current ≥ 16 A)- EN 61000-3-4: Limits for harmonic currentemissions (equipment input current ≤ 16 A)Basic standards, immunity- EN 61000-2-4 (IEC 61000-2-4):Compatibility levelsSimulation of voltage and frequency fluctuations,harmonics and commutation notches onthe power line.- EN 61000-4-2 (IEC 61000-4-2): Electrostaticdischarge (ESD)Simulation of electrostatic discharge.- EN 61000-4-4 (IEC 61000-4-4): Fasttransients, burst 5/ 50 nSSimulation of transients caused by switching ofcontactors, relays or similar devices.- EN 61000-4-5 (IEC 61000-4-5):Surges 1.2/ 50 μS.Simulation of transients caused by e.g. lightningthat strikes near an installation.- EN 61000-4-3: (IEC 61000-4-3):Radio-frequency electromagnetic field.Amplitude modulated.Simulation of interference caused by radiotransmission equipment.- EN 61000-4-6: (IEC 61000-4-6):RF common mode.Simulation of the effect from radio-transmittingequipment connected to connection cables.- ENV 50204:Radio-frequency electromagnetic field.Pulse modulated.Simulation of interference caused by GSMmobile phones.General aspects of EMC emissionsFor high frequency shielding, screened cablesused for Profibus, standard bus, control cablesand signal interface must in general be connectedto the enclosure at both ends.General aspects of EMC immunityIf there are problems with low frequency interference(ground loops), screened cable used for Profibus,standard bus, control cables and signal interfacecan be left open at one end.■ Aggressive environmentsIn common with all electronic equipment, a VLTfrequency converter contains a large number ofmechanical and electronic components, all of which arevulnerable to environmental effects to some extent.The VLT frequency converter should nottherefore be installed in environments withairborne liquids, particles or gases capableof affecting and damaging the electronic components.Failure to take the necessary protective measuresincreases the risk of stoppages, thus reducing thelife of the VLT frequency converter.Liquids can be carried through the air and condense inthe VLT frequency converter. In addition to this, liquidsmay cause corrosion of components and metal parts.Steam, oil and salt water may cause corrosionof components and metal parts.In such environments, equipment with enclosurerating ≥ IP 54 is recommended.In environments with high temperatures and humidity,corrosive gases such as sulphur, nitrogen andchlorine compounds will cause chemical processeson the VLT frequency converter components.Such chemical reactions will rapidly affect anddamage the electronic components.NB!:Mounting VLT frequency converters inaggressive environments will increase the riskof stoppages and furthermore considerablyreduce the life of the converter.Before the installation of the VLT frequency converter,the ambient air should be checked for liquids, particlesand gases. This may be done by observing existinginstallations in this environment. Typical indicatorsof harmful airborne liquids are water or oil on metalparts, or corrosion of metal parts.Excessive dust particle levels are often found oninstallation cabinets and existing electrical installations.One indicator of aggressive airborne gases is blackeningof copper rails and cable ends on existing installations.MG.03.H3.02 - VLT is a registered Danfoss trademark 93