1 Introduction1.1 Purpose of the ManualThese operating instructions provide information for safeinstallation and commissioning of the frequency converter.The operating instructions are intended for use byqualified personnel.Read and follow the operating instructions to use thefrequency converter safely and professionally, and payparticular attention to the safety instructions and generalwarnings. Always keep these operating instructionsavailable with the frequency converter.VLT® is a registered trademark.1.2 Additional ResourcesOther resources are available to understand advancedfrequency converter functions and programming.• The VLT® AutomationDrive FC 301/FC 302Programming Guide provides greater detail onworking with parameters and many applicationexamples.• The VLT® AutomationDrive FC 301/FC 302 DesignGuide provides detailed information aboutcapabilities and functionality to design motorcontrol systems.• Instructions for operation with optionalequipment.Supplementary publications and manuals are availablefrom Danfoss. See vlt-drives.danfoss.com/Support/Technical-Documentation/ for listings.1.3 Document and Software VersionThis manual is regularly reviewed and updated. Allsuggestions for improvement are welcome. Table 1.1 showsthe manual version and the corresponding softwareversion.Edition Remarks Software versionMG33AQxx Replaces MG33APxx 7.XXTable 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.The frequency converter can also be used for motorprotection.Depending on the configuration, the frequency convertercan be used in standalone applications or form part of alarger appliance or installation.The frequency converter is allowed for use in residential,industrial, and commercial environments in accordancewith local laws and standards.NOTICEIn a residential environment, this product can causeradio interference, in which case supplementarymitigation measures can 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® AutomationDrive FC 301/3024 Danfoss A/S © 07/2015 All rights reserved. MG33AQ0211