Danfoss FC 100 Series Operating Instructions Manual

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Contents

Danfoss FC 100 Series Operating Instructions Manual Manual pdf 10 page image

Installation at high altitudes380 - 500 V, enclosure A, B and C: At altitudes above 2km, please contact Danfoss regarding PELV.380 - 500 V, enclosure D, E and F: At altitudes above 3km, please contact Danfoss regarding PELV.525 - 690 V: At altitudes above 2 km, please contactDanfoss regarding PELV.Warning against Unintended Start1. The motor can be brought to a stop by meansof digital commands, bus commands, referen-ces or a local stop, while the frequencyconverter is connected to mains. If personalsafety considerations make it necessary toensure that no unintended start occurs, thesestop functions are not sufficient.2. While parameters are being changed, themotor may start. Consequently, the stop key[STOP/RESET] must always be activated;following which data can be modified.3. A motor that has been stopped may start iffaults occur in the electronics of the frequencyconverter, or if a temporary overload or a faultin the supply mains or the motor connectionceases.Touching the electrical parts may be fatal - even afterthe equipment has been disconnected from mains.Also make sure that other voltage inputs have been discon-nected, such as external 24 V DC, load sharing (linkage of DCintermediate circuit), as well as the motor connection forkinetic back up. Refer to the Operating Instructions for furthersafety guidelines.The frequency converter DC link capacitors remaincharged after power has been disconnected. To avoidan electrical shock hazard, disconnect the frequencyconverter from the mains before carrying out mainte-nance. Wait at least as follows before doing service onthe frequency converter:Voltage(V)Min. Waiting Time (Minutes)4 15 20 30 40200 -2401.1 - 3.7kW5.5 - 45kW380 -4801.1 - 7.5kW11 - 90 kW 110 - 250kW315 - 1000kW525 -6001.1 - 7.5kW11 - 90 kW525 -69011 - 90 kW 45 - 400kW450 - 1400kWBe aware that there may be high voltage on the DC link even whenthe LEDs are turned off.2.1.4 Before Commencing Repair Work1. Disconnect the frequency converter from mains2. Disconnect DC bus terminals 88 and 893. Wait at least the time mentioned in section GeneralWarning above4. Remove motor cable2.1.5 Special ConditionsElectrical ratings:The rating indicated on the nameplate of the frequencyconverter is based on a typical 3-phase mains power supply,within the specified voltage, current and temperature range,which is expected to be used in most applications.The frequency converters also support other special applica-tions, which affect the electrical ratings of the frequencyconverter.Special conditions which affect the electrical ratings might be:• Single phase applications• High temperature applications which require de-rating of the electrical ratings• Marine applications with more severe environmentalconditions.Other applications might also affect the electrical ratings.Consult the relevant sections in this manual and in the VLTHVAC Drive Design Guide, MG.11.BX.YY for information aboutthe electrical ratings.Safety VLT® HVAC Drive Operating Instructions10 MG.11.AD.02 - VLT® is a registered Danfoss trademark22