Danfoss VLT AQUA Drive FC 202 Design Manual

Also see for VLT AQUA Drive FC 202: Service guide Installation guide Installation guide Operating guide Installation guide

Contents

• Timed Action Programming• Smart Logic Controller Set-up• Cascade Control Config. ToolOrdering number:Order the CD containing MCT 10 Set-up Software usingcode number 130B1000.MCT 10 can also be downloaded from www.danfoss.com/BusinessAreas/DrivesSolutions/Softwaredownload/.5.8.3.2 MCT 31MCT 31The MCT 31 harmonic calculation PC tool enables easyestimation of the harmonic distortion in a givenapplication. Both the harmonic distortion of Danfossfrequency converters as well as non-Danfoss frequencyconverters with additional harmonic reduction devices,such as Danfoss AHF filters and 12-18-pulse rectifiers, canbe calculated.Ordering number:Order the CD containing the MCT 31 PC tool using codenumber 130B1031.MCT 31 can also be downloaded from www.danfoss.com/BusinessAreas/DrivesSolutions/Softwaredownload/.5.9 Safety5.9.1 High Voltage TestCarry out a high voltage test by short-circuiting terminalsU, V, W, L1, L2 and L3. Energize maximum 2.15 kV DC for380-500V frequency converters and 2.525 kV DC for 525–690 V frequency converters for one second between thisshort-circuit and the chassis.WARNINGWhen running high voltage tests of the entire installation,interrupt the mains and motor connection if the leakagecurrents are too high.5.9.2 Safety Earth ConnectionThe frequency converter has a high leakage current andmust be earthed appropriately for safety reasons accordingto EN 50178.WARNINGThe earth leakage current from the frequency converterexceeds 3.5 mA. To ensure a good mechanical connectionfrom the earth cable to the earth connection (terminal 95),the cable cross-section must be at least 10 mm2 or 2 ratedearth wires terminated separately.5.10 EMC-correct Installation5.10.1 Electrical Installation - EMCPrecautionsThe following is a guideline to good engineering practicewhen installing frequency converters. Follow theseguidelines in compliance with EN 61800-3 Firstenvironment. If the installation is in EN 61800-3 Secondenvironment, industrial networks, or in an installation withits own transformer, deviation from these guidelines isallowed but not recommended. See also 2.3.3 DanfossFrequency Converter and CE Labelling, 2.9.3 EMC Test Results(Emission) and 5.10.3 Earthing of Screened/Armoured ControlCables.Good engineering practice to ensure EMC-correctelectrical installation:• Use only braided screened/armoured motorcables and braided screened control cables. Thescreen provides a minimum coverage of 80%. Thescreen material must be metal, not limited to buttypically copper, aluminum, steel, or lead. Thereare no special requirements for the mains cable.• Installations using rigid metal conduits are notrequired to use screened cable, but the motorcable must be installed in conduit separate fromthe control and mains cables. Full connection ofthe conduit from the frequency converter to themotor is required. The EMC performance offlexible conduits varies a lot and information fromthe manufacturer must be obtained.• Connect the screen conduit to earth at both endsfor motor cables as well as for control cables. Insome cases, it is not possible to connect thescreen in both ends. If so, connect the screen atthe frequency converter. See also 5.3.3Connection to Mains and Earthing.• Avoid terminating the screen with twisted ends(pigtails). It increases the high frequencyimpedance of the screen, which reduces itseffectiveness at high frequencies. Use lowimpedance cable clamps or EMC cable glandsinstead.• Avoid using unscreened motor or control cablesinside cabinets housing the frequency converter,whenever possible.Leave the screen as close to the connectors as possible.Illustration 5.106 shows an example of an EMC-correctelectrical installation of an IP 20 frequency converter. Thefrequency converter is fitted in an installation cabinet withan output contactor and connected to a PLC, which isHow to Install VLT® AQUA Drive FC 202 Design GuideMG20Z102 - VLT® is a registered Danfoss trademark 1515 5