Danfoss FC 102 Operating Instructions Manual

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

Contents

For safety, comply with the following requirements• Electronic controls equipment is connected tohazardous mains voltage. Extreme care should betaken to protect against electrical hazards whenapplying power to the unit.• Run motor cables from multiple frequencyconverters separately. Induced voltage fromoutput motor cables run together can chargeequipment capacitors even with the equipmentturned off and locked out.• Field wiring terminals are not intended to receivea conductor one size larger.Overload and Equipment Protection• An electronically activated function within thefrequency converter provides overload protectionfor the motor. The overload calculates the level ofincrease to activate timing for the trip (controlleroutput stop) function. The higher the currentdraw, the quicker the trip response. The overloadprovides Class 20 motor protection. Seechapter 9 Warnings and Alarms for details on thetrip function.• Because the motor wiring carries high frequencycurrent, it is important that wiring for mains,motor power, and control are run separately. Usemetallic conduit or separated shielded wire. SeeIllustration 3.3. Failure to isolate power, motor,and control wiring could result in less thanoptimum equipment performance.• All frequency converters must be provided withshort-circuit and over-current protection. Inputfusing is required to provide this protection, seeIllustration 3.4. If not factory supplied, fuses mustbe provided by the installer as part of installation.See maximum fuse ratings inchapter 11.3.1 Protection.MotorLine PowerStopStartSpeedControl130BX370.10Illustration 3.3 Example of Proper Electrical Installation UsingConduitInstallation Operating InstructionsMG16D302 Danfoss A/S © Rev. 06/2014 All rights reserved. 133 3