Danfoss vlt series Operating Instructions Manual

Also see for VLT AutomationDrive FC 302: Service guide Programming guide Instruction manual Installation guide Operating guide

Contents

Danfoss vlt series Operating Instructions Manual Manual pdf 38 page image

Wire type and ratings• All wiring must comply with local and nationalregulations regarding cross-section and ambienttemperature requirements.• Power connection wire recommendation:Minimum 75 °C (167 °F) rated copper wire.See chapter 5.6 Electrical Data for recommended wire sizesand types.CAUTIONPROPERTY DAMAGE!Protection against motor overload is not included in thedefault setting. To add this function, setparameter 1-90 Motor Thermal Protection to [ETR trip] or[ETR warning]. For the North American market, the ETRfunction provides class 20 motor overload protection inaccordance with NEC. Failure to set parameter 1-90 MotorThermal Protection to [ETR trip] or [ETR warning] meansthat motor overload protection is not provided andproperty damage can occur if the motor overheats.3.4.1 Transformer SelectionUse the frequency converter with a 12-pulse isolationtransformer.3.4.2 Power ConnectionsCabling and fusingNOTICEAll cabling must comply with national and localregulations on cable cross-sections and ambienttemperature. UL applications require 75 °C copperconductors. 75 °C (167 °F) and 90 °C (194 °F) copperconductors are thermally acceptable for the frequencyconverter to use in non-UL applications.The power cable connections are located as inIllustration 3.32. Dimensioning of the cable cross-sectionmust be done in accordance with the current ratings andlocal legislation. See chapter 5.1 Mains Supply for details.For protection of the frequency converter, use therecommended fuses, or ensure that the unit has built-infuses. Recommended fuses are detailed in inchapter 3.4.13 Fuses. Always ensure that fusing conforms tolocal regulations.If the mains switch is included, the connection of mains isfitted to the mains switch.6 Phasepowerinput130BB693.1091-1 (L1-1)92-1 (L2-1)93-1 (L3-1)91-292-293-295 PE(L2-2)(L1-2)(L3-2)Illustration 3.32 Power Cable ConnectionsNOTICEIf an unshielded/unarmored cable is used, some EMCrequirements are not complied with. To comply with EMCemission specifications, use a shielded/armored motorcable. For more information, see EMC Specifications in theproduct relevant design guide.How to Install VLT® AutomationDrive FC 30236 Danfoss A/S © 04/2016 All rights reserved. MG34Q40233