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

CAUTIONIT MainsDo not connect 400 V frequency converters with RFI-filters to mains supplies with a voltage between phaseand earth of more than 440 V.For IT mains and delta earth (grounded leg), mainsvoltage can exceed 440 V between phase and earth.3 Phasepowerinput130BA026.1091 (L1)92 (L2)93 (L3)95 PEIllustration 5.43 Terminals for Mains and Earthing5.3.4 Motor Cable ConnectionNOTICEScreened motor cable is recommended. If an unscreenedcable is used, some EMC requirements are not compliedwith. For more information, see chapter 5.9 EMC-correctInstallation.1. Fasten de-coupling plate to the bottom of thefrequency converter with screws and washersfrom the accessory bag.2. Attach motor cable to terminals 96 (U), 97 (V), 98(W).3. Connect to earth connection (terminal 99) on de-coupling plate with screws from the accessorybag.4. Insert terminals 96 (U), 97 (V), 98 (W) and motorcable to terminals labelled MOTOR.5. Fasten screened cable to de-coupling plate withscrews and washers from the accessory bag.All types of three-phase asynchronous standard motors canbe connected to the frequency converter. Normally, smallmotors are star-connected (230/400 V, D/Y). Large motorsare delta-connected (400/690 V, D/Y). Refer to the motorname plate for correct connection mode and voltage.U1 V1 W1175ZA114.1196 97 98 96 97 98FC FCMotor MotorU2 V2 W2U1 V1 W1U2 V2 W2Illustration 5.44 Motor Cable ConnectionNOTICEIf motors are not inverter-duty rated, fit a Sine-wavefilter on the output of the frequency converter.Term.no.96 97 98 99U V W PE1) Motor voltage 0–100% of mainsvoltage.3 wires out of motorU1 V1 W1 PE1) Delta-connectedW2 U2 V2 6 wires out of motorU1 V1 W1 PE1) Star-connected U2, V2, W2U2, V2, and W2 to be interconnectedseparately.Table 5.6 Motor Cable Connection1) Protected Earth Connection5.3.5 Motor CablesSee chapter 8.1 General Specifications for maximumdimensioning of motor cable cross-section and length.• To comply with EMC emission specifications, usea screened/armoured motor cable.• Keep the motor cable as short as possible toreduce the noise level and leakage currents.• Connect the motor cable screen to both the de-coupling plate of the frequency converter and tothe metal cabinet of the motor.• Make the screen connections with the largestpossible surface area (cable clamp), by using thesupplied installation devices in the frequencyconverter.• Avoid mounting with twisted screen ends(pigtails), which spoils high frequency screeningeffects.• If it is necessary to split the screen to install amotor isolator or motor relay, the screen must beHow to Install Design GuideMG20Z202 Danfoss A/S © Rev. 06/2014 All rights reserved. 915 5