Danfoss VLT FC 101 Quick Manual

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6.2 EMC Emission Test Results6.2 Special Conditions6.2.1 Derating for Ambient Temperatureand Switching FrequencyEnsure that the ambient temperature measured over 24hours is at least 5 °C (41 °F) lower than the maximumambient temperature that is specified for the frequencyconverter. If the frequency converter is operated at a highambient temperature, decrease the continuous outputcurrent. For derating curve, see VLT® HVAC Basic Drive FC101 Design Guide.6.2.2 Derating for Low Air Pressure andHigh AltitudesThe cooling capability of air is decreased at low airpressure. For altitudes above 2000 m (6562 ft), contactDanfoss regarding PELV. Below 1000 m (3281 ft) altitude,derating is not necessary. For altitudes above 1000 m(3281 ft), decrease the ambient temperature or themaximum output current. Decrease the output by 1% per100 m (328 ft) altitude above 1000 m (3281 ft) or reducethe maximum ambient temperature by 1 °C (33.8 °F) per200 m (656 ft).6.3 General Technical DataProtection and features• Electronic motor thermal protection against overload.• Temperature monitoring of the heat sink ensures that the frequency converter trips if there is overtemperature.• The frequency converter is protected against short circuits between motor terminals U, V, W.• When a motor phase is missing, the frequency converter trips and issues an alarm.• When a mains phase is missing, the frequency converter trips or issues a warning (depending on the load).• Monitoring of the DC-link voltage ensures that the frequency converter trips when the DC-link voltage is too lowor too high.• The frequency converter is protected against ground faults on motor terminals U, V, W.6.3.1 Mains Supply (L1, L2, L3)Supply voltage 200–240 V ±10%Supply voltage 380–480 V ±10%Supply voltage 525–600 V ±10%Supply frequency 50/60 HzMaximum imbalance temporary between mains phases 3.0% of rated supply voltageTrue power factor (λ) ≥0.9 nominal at rated loadDisplacement power factor (cosφ) near unity (>0.98)Switching on the input supply L1, L2, L3 (power-ups) enclosure sizes H1–H5, I2, I3, I4 Maximum 2 times/minuteSwitching on the input supply L1, L2, L3 (power-ups) enclosure sizes H6–H8, I6–I8 Maximum 1 time/minuteEnvironment according to EN 60664-1 Overvoltage category III/pollution degree 2The unit is suitable for use on a circuit capable of delivering not more than 100000 Arms symmetrical Amperes, 240/480 Vmaximum.6.3.2 Motor Output (U, V, W)Output voltage 0–100% of supply voltageOutput frequency 0–200 Hz (VVC+), 0–400 Hz (u/f )Switching on output UnlimitedRamp times 0.05–3600 sSpecifications Quick GuideMG18A802 Danfoss A/S © 05/2016 All rights reserved. 496 6