1 Introduction1.1 How to Read the Design GuideThe design guide provides information required forintegration of the frequency converter in a diversity ofapplications.1.1.1 Additional Resources• VLT® Decentral Drive FCD 302 Operating Guide, forinformation required to install and commissionthe frequency converter.• VLT® AutomationDrive FC 301/302 ProgrammingGuide, for information about how to program theunit, including complete parameter descriptions.• Modbus RTU Operating Instructions, for theinformation required for controlling, monitoring,and programming the frequency converter viathe built-in Modbus fieldbus.• VLT® PROFIBUS Converter MCA 114 OperatingInstructions, VLT® EtherNet/IP MCA 121 InstallationGuide, and VLT® PROFINET MCA 120 InstallationGuide, for information required for controlling,monitoring, and programming the frequencyconverter via a fieldbus.• VLT® Encoder Option MCB 102 InstallationInstructions.• VLT® AutomationDrive FC 300, Resolver Option MCB103 Installation Instructions.• VLT® AutomationDrive FC 300, Safe PLC InterfaceOption MCB 108 Installation Instructions.• VLT® Brake Resistor MCE 101 Design Guide.• VLT® Frequency Converters Safe Torque OffOperating Guide.• Approvals.Technical literature and approvals are available online atwww.danfoss.com/en/search/?filter=type%3Adocumentation%2Csegment%3Adds.The following symbols are used in this manual:WARNINGIndicates a potentially hazardous situation that couldresult in death or serious injury.CAUTIONIndicates a potentially hazardous situation that couldresult in minor or moderate injury. It may also be usedto alert against unsafe practices.NOTICEIndicates important information, including situations thatmay result in damage to equipment or property.The following conventions are used in this manual:• Numbered lists indicate procedures.• Bullet lists indicate other information anddescription of illustrations.• Italicized text indicates:- Cross-reference.- Link.- Footnote.- Parameter name.- Parameter group name.- Parameter option.• All dimensions in drawings are in mm (inch).1.2 Document and Software VersionThis manual is regularly reviewed and updated. Allsuggestions for improvement are welcome. Table 1.1 showsthe document version and the corresponding softwareversion.Edition Remarks Software versionMG04H3xx EMC-correct Installation has beenupdated.7.5xTable 1.1 Document and Software Version1.3 Definitions1.3.1 Frequency ConverterIVLT,MAXMaximum output current.IVLT,NRated output current supplied by the frequency converter.UVLT,MAXMaximum output voltage.Introduction VLT® Decentral Drive FCD 3026 Danfoss A/S © 05/2018 All rights reserved. MG04H30211