Danfoss VLT FC 102 Operating Instructions Manual

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2 Safety2.1 Safety SymbolsThe following symbols are used in this document.WARNINGIndicates a potentially hazardous situation which couldresult in death or serious injury.CAUTIONIndicates a potentially hazardous situation which couldresult in minor or moderate injury. It may also be usedto alert against unsafe practices.NOTICEIndicates important information, including situations thatmay 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 is allowed to install or operate thisequipment.Qualified personnel is defined as trained staff, who areauthorised to install, commission, and maintain equipment,systems and circuits in accordance with pertinent laws andregulations. Additionally, the personnel must be familiarwith the instructions and safety measures described in thisdocument.2.3 Safety PrecautionsWARNINGHIGH VOLTAGE!Frequency converters contain high voltage whenconnected to AC mains input power. Installation, start-up, and maintenance must be performed by qualifiedpersonnel only. Failure to perform installation, start-up,and maintenance by qualified personnel could result indeath or serious injury.WARNINGUNINTENDED START!When the frequency converter is connected to AC mains,the motor may start at any time. The frequencyconverter, motor, and any driven equipment must be inoperational readiness. Failure to be in operationalreadiness when the frequency converter is connected toAC mains could result in death, serious injury, equipmentor property damage.WARNINGDISCHARGE TIME!Frequency converters contain DC-link capacitors that canremain charged even when the frequency converter isnot powered. To avoid electrical hazards, disconnect ACmains, any permanent magnet type motors, and anyremote DC-link power supplies, including batterybackups, UPS and DC-link connections to otherfrequency converters. Wait for the capacitors todischarge completely before performing any service orrepair work. The amount of waiting time is listed inTable 2.1. Failure to wait the specified time after powerhas been removed before doing service or repair couldresult in death or serious injury.Voltage [V] Minimum waiting time [minutes]4 7 15200-240 1.1-3.7 kW 5.5-45 kW380-480 1.1-7.5 kW 11-90 kW525-600 1.1-7.5 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 2.1 Discharge TimeWARNINGLEAKAGE CURRENT HAZARD!Leakage currents are higher than 3.5 mA. It is theresponsibility of the user or certified electrical installer toensure correct grounding of the equipment. Failure toground the frequency converter properly could result indeath or serious injury.Safety VLT® HVAC Drive Operating InstructionsMG11AJ02 - Rev. 2013-07-31 52 2