Danfoss VLT AQUA FC 202 Operating Instructions Manual

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

Contents

NOTICEThe motor cable must be screened/armoured. If anunscreened/unarmoured cable is used, some EMCrequirements are not complied with. Use a screened/armoured motor cable to comply with EMC emissionspecifications. For more information, see EMC specifi-cations in the Design Guide.See section General Specifications for correct dimensioningof motor cable cross-section and length.Screening of cablesAvoid installation with twisted screen ends (pigtails). Theyspoil the screening effect at higher frequencies. If it isnecessary to break the screen to install a motor isolator ormotor contactor, the screen must be continued at thelowest possible HF impedance.Connect the motor cable screen to both the de-couplingplate of the frequency converter and to the metal housingof the motor.Make the screen connections with the largest possiblesurface area (cable clamp). This is done by using thesupplied installation devices within the frequencyconverter.Cable-length and cross-sectionThe frequency converter has been EMC tested with a givenlength of cable. Keep the motor cable as short as possibleto reduce the noise level and leakage currents.Switching frequencyWhen frequency converters are used together with Sine-wave filters to reduce the acoustic noise from a motor, theswitching frequency must be set according to theinstruction in 14-01 Switching Frequency.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 3.161)Protected Earth ConnectionNOTICEIn motors without phase insulation paper or otherinsulation reinforcement suitable for operation withvoltage supply (such as a frequency converter), fit a Sine-wave filter on the output of the frequency converter.U1 V1 W1175ZA114.1196 97 98 96 97 98FC FCMotor MotorU2 V2 W2U1 V1 W1U2 V2 W2Illustration 3.54 Star/Delta ConnectionsHow to Install VLT AQUA Drive FC 202 Operation InstructionsMG20P402 - Rev. 2013-12-16 433 3