Danfoss VLT Decentral Drive FCD 302 Design Manual

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Danfoss VLT Decentral Drive FCD 302 Design Manual Manual pdf 85 page image

6.3 General SpecificationsMains supply (L1, L2, L3)Supply voltage 380-480 V ±10%Mains voltage low / mains drop-out:During low mains voltage or a mains drop-out, the frequency converter continues until the intermediate circuit voltage dropsbelow the minimum stop level, which corresponds typically to 15% below the FC's lowest rated supply voltage. Power-up and fulltorque cannot be expected at mains voltage lower than 10% below the frequency converter's lowest rated supply voltage.Supply frequency 50/60 Hz ± 5%Max. imbalance temporary between mains phases 3.0% of rated supply voltageTrue Power Factor (λ) ≥ 0.9 nominal at rated loadDisplacement Power Factor (cos ϕ) near unity (> 0.98)Switching on input supply L1, L2, L3 (power-ups) maximum 2 times/min.The unit is suitable for use on a circuit capable of delivering not more than 100,000 RMS symmetrical Amperes, 480 V maximum.Motor output (U, V, W)Output voltage 0-100% of supply voltageOutput frequency 0-1000 HzOutput frequency in Flux Mode 0-300 HzSwitching on output UnlimitedRamp times 0.01-3600 sTorque CharacteristicsStarting torque (Constant torque) maximum 160% for 60 s1)Starting torque maximum 180% up to 0.5 s1)Overload torque (Constant torque) maximum 160% for 60 s1)Starting torque (Variable torque) maximum 110% for 60 s1)Overload torque (Variable torque) maximum 110% for 60 s1)1) Percentage relates to the nominal torque.Cable lengths and cross sections for control cables1)Max. motor cable length, screened 10 mMax. motor cable length, unscreened, without fulfilling emission specification. 10 mMaximum cross section to control terminals, flexible/ rigid wire without cable end sleeves 1.5 mm2/16 AWGMaximum cross section to control terminals, flexible wire with cable end sleeves 1.5 mm2/16 AWGMaximum cross section to control terminals, flexible wire with cable end sleeves with collar 1.5 mm2/16 AWGMinimum cross section to control terminals 0.25 mm2/ 24 AWG1)Power cables, see tables in 6.2 Electrical Data and Wire Sizes of the FCD 302 Design Guide, MG04HProtection and Features• Electronic thermal motor protection against overload.• Temperature monitoring of the heatsink ensures that the frequency converter trips if the temperature reaches apredefined level.• The frequency converter is protected against short-circuits on motor terminals U, V, W.• If a mains phase is missing, the frequency converter trips or issues a warning (depending on the load).• Monitoring of the intermediate circuit voltage ensures that the frequency converter trips if the intermediate circuitvoltage is too low or too high.• The frequency converter constantly checks for critical levels of internal temperature, load current, high voltage onthe intermediate circuit and low motor speeds. As a response to a critical level, the frequency converter can adjustthe switching frequency and/ or change the switching pattern in order to ensure the performance of the drive.Specifications VLT® Decentral Drive FCD 30284 MG04H102 - VLT® is a registered Danfoss trademark66