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

1.8 Safety1.8.1 General Safety PrinciplesFrequency converters contain high-voltage componentsand have the potential for fatal injury if handledimproperly. Only trained technicians should install andoperate the equipment. Do not attempt repair workwithout first removing power from the frequency converterand waiting the designated amount of time for storedelectrical energy to dissipate.Strict adherence to safety precautions and notices ismandatory for safe operation of the frequency converter.1.8.2 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 these operating instructions.WARNINGHIGH 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, service,or repair work can result in death, serious injury, orproperty damage. The motor can start via an externalswitch, a serial bus command, an input reference signalfrom the LCP, or after a cleared fault condition.To prevent unintended motor start:• Disconnect the frequency converter from themains.• 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 the motor.• Disconnect the AC mains and remote DC-linkpower supplies, including battery back-ups,UPS, and DC-link connections to otherfrequency converters.• Disconnect or lock any PM motor.• Wait for the capacitors to discharge fully, beforeperforming any service or repair work. Theduration of waiting time is specified inTable 1.4.Voltage[V]Minimum waiting time(minutes)4 7 15200-240 0.25-3.7 kW - 5.5-45 kW380-480 0.37-7.5 kW - 11-90 kW525-600 0.75-7.5 kW - 11-90 kW525-690 - 1.1-7.5 kW 11-90 kWHigh voltage may be present even when the warning LEDindicator lights are off.Table 1.4 Discharge TimeIntroduction Design GuideMG20N602 Danfoss A/S © 09/2014 All rights reserved. 131 1