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

Danfoss VLT AQUA FC 202 Operating Instructions Manual Manual pdf 14 page image

4 Electrical Installation4.1 Safety InstructionsSee chapter 2 Safety for general safety instructions.WARNINGINDUCED VOLTAGEInduced voltage from output motor cables that runtogether can charge equipment capacitors, even with theequipment turned off and locked out. Failure to runoutput motor cables separately or use screened cablescould result in death or serious injury.• Run output motor cables separately, or• Use screened cablesCAUTIONSHOCK HAZARDThe frequency converter can cause a DC current in thePE conductor. Failure to follow the recommendationbelow means the RCD may not provide the intendedprotection.• When a residual current-operated protectivedevice (RCD) is used for protection againstelectrical shock, only an RCD of Type B ispermitted on the supply side.Overcurrent protection• Additional protective equipment, such as shortcircuit protection or motor thermal protectionbetween frequency converter and motor, isrequired for applications with multiple motors.• Input fusing is required to provide short circuitand overcurrent protection. If not factory-supplied, fuses must be provided by the installer.See maximum fuse ratings in chapter 8.8 Fusesand Circuit Breakers.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 rated copper wire.See chapter 8.1 Electrical Data and chapter 8.5 Cable Specifi-cations for recommended wire sizes and types.4.2 EMC-compliant InstallationTo obtain an EMC-compliant installation, follow theinstructions provided in chapter 4.3 Grounding,chapter 4.4 Wiring Schematic, chapter 4.6 Motor Connection,and chapter 4.8 Control Wiring.4.3 GroundingWARNINGLEAKAGE CURRENT HAZARDLeakage currents exceed 3.5 mA. Failure to ground thefrequency converter properly could result in death orserious injury.• Ensure the correct grounding of the equipmentby a certified electrical installer.For electrical safety• Ground the frequency converter in accordancewith applicable standards and directives.• Use a dedicated ground wire for input power,motor power, and control wiring.• Do not ground one frequency converter toanother in a daisy chain fashion.• Keep the ground wire connections as short aspossible.• Follow motor manufacturer wiring requirements.• Minimum cable cross-section: 10 mm2 (or 2 ratedground wires terminated separately).For EMC-compliant installation• Establish electrical contact between the cablescreen and the frequency converter enclosure byusing metal cable glands or by using the clampsprovided on the equipment (seechapter 4.6 Motor Connection).• Use high-strand wire to reduce electricalinterference.• Do not use pigtails.NOTICEPOTENTIAL EQUALISATIONRisk of electrical interference, when the ground potentialbetween the frequency converter and the system isdifferent. Install equalising cables between the systemcomponents. Recommended cable cross-section: 16 mm2.Electrical Installation Operating Instructions12 Danfoss A/S © Rev. 05/2014 All rights reserved. MG20MB0244