Mains Supply (3-Phase); Motor Output And Motor Data; Ambient Conditions - Danfoss VLT Midi Drive FC 280 Operating Instructions Manual

Specifications
Values are based on a typical motor efficiency (IE2/IE3 border line). Motors with lower efficiency add to the power loss in the frequency
converter and motors with high efficiency reduce power loss.
Applies to dimensioning of frequency converter cooling. If the switching frequency is higher than the default setting, the power losses
may rise. LCP and typical control card power consumptions are included. Further options and customer load may add up to 30 W to the
losses (though typically only 4 W extra for a fully loaded control card or fieldbus).
For power loss data according to EN 50598-2, refer to www.danfoss.com/vltenergyefficiency.
2) Measured using 50 m (164 ft) (shielded motor cables at rated load and rated frequency. For energy efficiency class, see
chapter 9.4 Ambient Conditions. For part load losses, see www.danfoss.com/vltenergyefficiency.

9.2 Mains Supply (3-phase)

Mains supply (L1, L2, L3)
Supply terminals
Supply voltage
1) The frequency converter can run at -25% input voltage with reduced performance. The maximum output power of the
frequency converter is 75% if input voltage is -25% and 85% if input voltage is -15%.
Full torque cannot be expected at mains voltage lower than 10% below the lowest rated supply voltage of the frequency
converter.
Supply frequency
Maximum imbalance temporary between mains phases
True power factor (λ)
Displacement power factor (cos ϕ)
Switching on input supply L1, L2, L3 (power-ups) ≤7.5 kW
9 9
Switching on input supply L1, L2, L3 (power-ups) 11–22 kW
The unit is suitable for use on a circuit capable of delivering less than 5000 RMS symmetrical Amperes, 480 V maximum.

9.3 Motor Output and Motor Data

Motor output (U, V, W)
Output voltage
Output frequency
Output frequency in VVC
Switching on output
Ramp time
Torque characteristics
Starting torque (constant torque)
Overload torque (constant torque)
Starting torque (variable torque)
Overload torque (variable torque)
Starting current
Torque rise time in VVC
1) Percentage relates to the nominal torque.

9.4 Ambient Conditions

Ambient Conditions
IP class
Vibration test, all enclosure sizes
Relative humidity
Ambient temperature (at DPWM switching mode)
- with derating
- at full constant output current with some power size
- at full constant output current
48
®
VLT Midi Drive FC 280
+
Mode
+ (independent of f )
sw
Danfoss A/S © 11/2015 All rights reserved.
5–95% (IEC 721-3-3; Class 3K3 (non-condensing) during operation
L1, L2, L3
1)
380–480 V: -15% (-25%) to +10%
50/60 Hz ±5%
3.0% of rated supply voltage
≥0.9 nominal at rated load
near unity (>0.98)
Maximum 2 times/minute
Maximum 1 time/minute
0–100% of supply voltage
0–500 Hz
0–200 Hz
Unlimited
0.05–3600 s
Maximum 160% for 60 s
Maximum 160% for 60 s
Maximum 110% for 60 s
Maximum 110% for 60 s
Maximum 200% for 1 s
Maximum 50 ms
Maximum 55 °C (131 °F)
Maximum 50 °C (122 °F)
Maximum 45 °C (113 °F)
MG07A102
1)
1)
1)
IP20
1.0 g
1)