1 Introduction1.1 Purpose of the Operating GuideThis operating guide provides information for safe instal-lation and commissioning of the frequency converter.The operating guide is intended for use by qualifiedpersonnel.Read and follow the instructions to use the frequencyconverter safely and professionally, and pay particularattention to the safety instructions and general warnings.Always keep this operating guide available with thefrequency converter.VLT® is a registered trademark.1.2 Additional ResourcesOther resources are available to understand advancedfrequency converter functions and programming.• The VLT® AQUA Drive FC 202 Programming Guideprovides greater detail on working withparameters and many application examples.• The VLT® AQUA Drive FC 202 Design Guideprovides detailed information about capabilitiesand functionality to design motor controlsystems.• Instructions for operation with optionalequipment.Supplementary publications and manuals are availablefrom Danfoss. See www.vlt-drives.danfoss.com/Support/Technical-Documentation/ for listings.1.3 Manual and Software VersionThis manual is regularly reviewed and updated. Allsuggestions for improvement are welcome.Table 1.1 shows the manual version and the correspondingsoftware version.Edition Remarks SoftwareversionMG20MDxx The parameter list is updated toreflect software version 2.6x. Editorialupdate.2.6xTable 1.1 Manual and Software Version1.4 Product Overview1.4.1 Intended UseThe frequency converter is an electronic motor controllerintended for:• Regulation of motor speed in response to systemfeedback or to remote commands from externalcontrollers. A power drive system consists of thefrequency converter, the motor, and equipmentdriven by the motor.• System and motor status surveillance.Depending on configuration, the frequency converter canbe used in standalone applications or form part of a largerappliance or installation.The frequency converter is allowed for use in residential,industrial, and commercial environments in accordancewith local laws, standards, and emission limits as describedin the design guide.Single-phase frequency converters (S2 and S4) installedin the EUThe following limitations apply:• Units with an input current below 16 A and aninput power above 1 kW (1.5 hp) are onlyintended for professional use in trades,professions, or industries and not for sale to thegeneral public.• Designated application areas are public pools,public water supplies, agriculture, commercialbuildings, and industries. All other single-phaseunits are only intended for use in private low-voltage systems interfacing with public supplyonly at a medium or high-voltage level.• Operators of private systems must ensure thatthe EMC environment complies with IEC610000-3-6 and/or the contractual agreements.NOTICEIn a residential environment, this product can causeradio interference, in which case supplementarymitigation measures may be required.Foreseeable misuseDo not use the frequency converter in applications, whichare non-compliant with specified operating conditions andenvironments. Ensure compliance with the conditionsspecified in chapter 8 Specifications.Introduction VLT® AQUA Drive FC 2024 Danfoss A/S © 10/2016 All rights reserved. MG20MD0211