Danfoss VLT 6000 HVAC Series Quick Setup Manual

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Danfoss VLT 6000 HVAC Series Quick Setup Manual Manual pdf 2 page image

VLT ® 6000 HVACThe voltage of the frequency converteris dangerous whenever the equipmentis connected to mains. Incorrectinstallation of the motor or the frequency convertermay cause damage to the equipment, seriouspersonal injury or death.Consequently, the instructions in this manual,as well as national and local rules and safetyregulations, must be complied with.■ Safety regulations1. The frequency converter must be disconnectedfrom mains if repair work is to be carried out. Checkthat the mains supply has been disconnectedand that the necessary time has passed beforeremoving motor and mains plugs.2. The [OFF/STOP] key on the control panel ofthe frequency converter does not disconnectthe equipment from mains and is thus notto be used as a safety switch.3. Correct protective earthing of the equipmentmust be established, the user must be protectedagainst supply voltage, and the motor must beprotected against overload in accordance withapplicable national and local regulations.4. The earth leakage currents are higher than 3.5 mA.5. Protection against motor overload is included inthe factory setting. Parameter 117, Motor thermalprotection default value is ETR trip 1.Note: The function is initialised at 1.0 x ratedmotor current and rated motor frequency (seeparameter 117, Motor thermal protection).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. Reliable galvanic isolation (PELV) is not compliedwith if the RFI switch is placed in OFF position.This means that all control in - and outputscan only be considered low-voltage terminalswith basic galvanic isolation.8. Please note that the frequency converter hasmore voltage inputs than L1, L2 and L3, whenthe DC-bus terminals are used.Check that all voltage inputs have beendisconnected and that the necessary time haspassed before repair work is commenced.■ Warning against unintended start1. The motor can be brought to a stop bymeans of digital commands, bus commands,references or a local stop, while the frequencyconverter is connected to mains.If personal safety considerations make it necessaryto ensure that no unintended start occurs, thesestop functions are not sufficient.2. While parameters are being changed, themotor may start. Consequently, the stop key[OFF/STOP] must always be activated, followingwhich data can be modified.3. A motor that has been stopped may start if faultsoccur in the electronics of the frequency converter,or if a temporary overload or a fault in the supplymains or the motor connection ceases.■ Use on isolated mainsSee section RFI Switch regarding use on isolated mains.It is important to follow the recommendationsregarding installation on IT-mains, since sufficientprotection of the complete installation must beobserved. Not taking care using relevant monitoringdevices for IT-mains may result in damage.MG.60.C7.02 - VLT is a registered Danfoss trademark2