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

2 Introduction2.1 SafetyWARNINGHIGH VOLTAGEFrequency converters contain high voltage whenconnected to AC mains input, DC power supply, or loadsharing. Failure to perform installation, start-up, andmaintenance by qualified personnel can result in deathor serious injury.• Installation, start-up, and maintenance must beperformed by qualified personnel only.WARNINGDISCHARGE TIMEThe frequency converter contains DC-link capacitors,which can remain charged even when the frequencyconverter is not powered. Failure to wait the specifiedtime after power has been removed before performingservice or repair work, can result in death or seriousinjury.• Stop motor.• Disconnect AC mains and remote DC-link powersupplies, including battery back-ups, UPS, andDC-link connections to other frequencyconverters.• Disconnect or lock PM motor.• Wait for the capacitors to discharge fully, beforeperforming any service or repair work. Theduration of waiting time is specified inTable 2.1.Voltage[V]Power range[kW]Minimum waitingtime(minutes)380-480 110-315 20380-480 45–400 20525-690 315-1000 40525-690 450-1200 30High voltage can be present even when the warning LEDindicator lights are off.Table 2.1 Discharge TimeWARNINGLEAKAGE CURRENT HAZARDLeakage currents exceed 3.5 mA. Failure to ground thefrequency converter properly can result in death orserious injury.• Ensure the correct grounding of the equipmentby a certified electrical installer.WARNINGUNINTENDED STARTWhen the frequency converter is connected to AC mains,DC power supply, or load sharing, the motor may start atany time. Unintended start during programming, serviceor repair work can result in death, serious injury, orproperty damage. The motor can start by means of anexternal switch, a serial bus command, an inputreference signal from the LCP or LOP, via remoteoperation using MCT 10 software, or after a cleared faultcondition.To prevent unintended motor start:• Disconnect the frequency converter from mains.• Press [Off/Reset] on the LCP, beforeprogramming parameters.• The frequency converter, motor, and any drivenequipment must be fully wired and assembledwhen the frequency converter is connected toAC mains, DC power supply, or load sharing.WARNINGEQUIPMENT HAZARDContact with rotating shafts and electrical equipmentcan result in death or serious injury.• Ensure that only trained and qualifiedpersonnel perform installation, start up, andmaintenance.• Ensure that electrical work conforms to nationaland local electrical codes.• Follow the procedures in these operatinginstructions.Introduction Design GuideMG20Z202 Danfoss A/S © Rev. 06/2014 All rights reserved. 112 2