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

10.3 Connections10.3.1 Power ConnectionsNOTICEAll cabling must comply with national and localregulations on cable cross-sections and ambienttemperature. UL applications require 75 °C (167 °F)copper conductors. Non-UL applications can use 75 °C(167 °F) and 90 °C (194 °F) copper conductors.The power cable connections are located as shown inIllustration 10.2. For correct dimensioning of motor cablecross-section and length, see chapter 7.1 Electrical Data,380–480 V and chapter 7.2 Electrical Data, 525–690 V .For protection of the drive, use the recommended fusesunless the unit has built-in fuses. Recommended fuses arelisted in chapter 10.15 EMC-compliant Installation. Ensurethat proper fusing complies with local regulations.The connection of mains is fitted to the mains switch ifincluded.3 Phasepowerinput130BA026.1091 (L1)92 (L2)93 (L3)95 PEIllustration 10.2 Power Cable ConnectionsNOTICEThe motor cable must be shielded/armored. If anunshielded/unarmored cable is used, some EMCrequirements are not complied with. Use a shielded/armored motor cable to comply with EMC emissionspecifications. For more information, seechapter 10.15 EMC-compliant Installation.Shielding of cablesAvoid installation with twisted shield ends (pigtails). Theyspoil the shielding effect at higher frequencies. If it isnecessary to break the shield to install a motor isolator orcontactor, continue the shield at the lowest possible HFimpedance.Connect the motor cable shield to both the decouplingplate of the drive and the metal housing of the motor.Make the shield connections with the largest possiblesurface area (cable clamp) by using the installation deviceswithin the drive.Cable length and cross-sectionThe drive has been EMC tested with a given length ofcable. Keep the motor cable as short as possible to reducethe noise level and leakage currents.Switching frequencyWhen drives are used together with sine-wave filters toreduce the acoustic noise from a motor, the switchingfrequency must be set according to the instructions inparameter 14-01 Switching Frequency.Terminal 96 97 98 99– U V W PE1) Motor voltage 0–100% ofmains voltage. 3 wires outof motor.– U1 V1 W1 PE1) Delta-connected.W2 U2 V2 6 wires out of motor.– U1 V1 W1 PE1) Star-connected U2, V2, W2U2, V2, and W2 to beinterconnected separately.Table 10.1 Motor Cable Connection1) Protected ground connectionNOTICEIn motors without phase insulation, paper, or otherinsulation reinforcement suitable for operation withvoltage supply, use a sine-wave filter on the output ofthe drive.U1 V1 W1175ZA114.1196 97 98 96 97 98FC FCMotor MotorU2 V2 W2U1 V1 W1U2 V2 W2Illustration 10.3 Motor Cable Connection10.3.2 DC Bus ConnectionThe DC bus terminal is used for DC back-up, with the DClink being supplied from an external source.Terminal Function88, 89 DC BusTable 10.2 DC Bus TerminalsElectrical Installation Con... Design GuideMG22B102 Danfoss A/S © 05/2017 All rights reserved. 7510 10