Danfoss FC 100 Series Operating Instructions Manual

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Contents

Danfoss FC 100 Series Operating Instructions Manual Manual pdf 9 page image

2 Safety2.1.1 SymbolsSymbols used in this manual:NOTEIndicates something to be noted by the reader.Indicates a general warning.Indicates a high-voltage warning.✮ Indicates default setting2.1.2 High Voltage WarningThe voltage of the frequency converter and the MCO101 option card is dangerous whenever it is connectedto mains. Incorrect installation of the motor or frequen-cy converter may causedeath, serious injury or damageto the equipment. Consequently, it is essential tocomply with the instructions in this manual as well aslocal and national rules and safety regulations.2.1.3 Safety NoteThe voltage of the frequency converter is dangerouswhenever connected to mains. Incorrect installation ofthe motor, frequency converter or fieldbus may causedeath, serious personal injury or damage to theequipment. Consequently, the instructions in thismanual, as well as national and local rules and safetyregulations, must be complied with.Safety Regulations1. The frequency converter must be disconnected frommains if repair work is to be carried out. Check thatthe mains supply has been disconnected and thatthe necessary time has passed before removingmotor and mains plugs.2. The [STOP/RESET] key on the LCP of the frequencyconverter does not disconnect the equipment frommains and is thus not to be used as a safety switch.3. Correct protective earthing of the equipment mustbe established, the user must be protected againstsupply voltage, and the motor must be protectedagainst overload in accordance with applicablenational and local regulations.4. The earth leakage currents are higher than 3.5 mA.5. Protection against motor overload is set bypar. 1-90 Motor Thermal Protection. If this function isdesired, set par. 1-90 Motor Thermal Protection todata value [ETR trip] (default value) or data value[ETR warning]. Note: The function is initialized at 1.16x rated motor current and rated motor frequency.For the North American market: The ETR functionsprovide class 20 motor overload protection inaccordance with NEC.6. Do not remove the plugs for the motor and mainssupply while the frequency converter is connectedto mains. Check that the mains supply has beendisconnected and that the necessary time haspassed before removing motor and mains plugs.7. Please note that the frequency converter has morevoltage inputs than L1, L2 and L3, when load sharing(linking of DC intermediate circuit) and external 24 VDC have been installed. Check that all voltage inputshave been disconnected and that the necessary timehas passed before commencing repair work.Safety VLT® HVAC Drive Operating InstructionsMG.11.AD.02 - VLT® is a registered Danfoss trademark 92 2