Danfoss VLT Series FC 102 Installation Manual

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Contents

Danfoss VLT Series FC 102 Installation Manual Manual pdf 6 page image

2 Safety2.1 Safety SymbolsThe following symbols are used in this document:WARNINGIndicates a potentially hazardous situation that couldresult in death or serious injury.CAUTIONIndicates a potentially hazardous situation that couldresult in minor or moderate injury. It can also be used toalert against unsafe practices.NOTICEIndicates important information, including situations thatcan result in damage to equipment or property.2.2 Qualified PersonnelCorrect and reliable transport, storage, installation,operation, and maintenance are required for the trouble-free and safe operation of the frequency converter. Onlyqualified personnel are allowed to install or operate thisequipment.Qualified personnel are defined as trained staff, who areauthorised to install, commission, and maintain equipment,systems, and circuits in accordance with pertinent laws andregulations. Additionally, the qualified personnel must befamiliar with the instructions and safety measuresdescribed in this document.2.3 Safety PrecautionsWARNINGHIGH 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.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.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 in therelevant frequency converter OperatingInstructions, Chapter 2 Safety.Safety Installation Guide4 Danfoss A/S © Rev. 07/2014 All rights reserved. MG90U40222