1 Introduction1.1.1 Software Version and Approvals: VLT®Refrigeration Drive FC 103VLT® Refrigeration Drive FC 103Software version: 1.0xThis manual can be used for all VLT® Refrigeration Drive FC 103frequency converters with software version 1.0x.The software version number can be seen from 15-43 SoftwareVersion.Table 1.11.1.2 SymbolsThe following symbols are used in this manual.WARNINGIndicates a potentially hazardous situation which, if notavoided, could result in death or serious injury.CAUTIONIndicates a potentially hazardous situation which, if notavoided, may result in minor or moderate injury. It mayalso be used to alert against unsafe practices.CAUTIONIndicates a situation that may result in equipment orproperty-damage-only accidents.NOTEIndicates highlighted information that should be regardedwith attention to avoid mistakes or operate equipment atless than optimal performance.* Indicates default settingTable 1.21.1.3 AbbreviationsAlternating current ACAmerican wire gauge AWGAmpere/AMP AAutomatic Motor Adaptation AMACurrent limit ILIMDegrees Celsius °CDirect current DCDrive Dependent D-TYPEElectro Magnetic Compatibility EMCElectronic Thermal Relay ETRFrequency converter FCGram gHertz HzHorsepower hpKilohertz kHzLocal Control Panel LCPMeter mMillihenry Inductance mHMilliampere mAMillisecond msMinute minMotion Control Tool MCTNanofarad nFNewton Meters NmNominal motor current IM,NNominal motor frequency fM,NNominal motor power PM,NNominal motor voltage UM,NPermanent Magnet motor PM motorProtective Extra Low Voltage PELVPrinted Circuit Board PCBRated Inverter Output Current IINVRevolutions Per Minute RPMRegenerative terminals RegenSecond sSynchronous Motor Speed nsTorque limit TLIMVolts VThe maximum output current IVLT,MAXThe rated output current supplied by thefrequency converterIVLT,NTable 1.3Introduction VLT® Refrigeration Drive Programming GuideMG16H102 - VLT® is a registered Danfoss trademark 31 1