Danfoss VLT HVAC Drive FC 131, Руководство по эксплуатации

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6.3 Special Conditions
6.3.1 Derating for Ambient Temperature and Switching Frequency
Ensure that the ambient temperature measured over 24 hours is at least 5 °C (9 °F) lower than the maximum ambient temperature
that is specified for the drive. If the drive is operated at a high ambient temperature, decrease the constant output current. For
derating specifications, see the VLT® HVAC Drive FC 131 Design Guide.
6.3.2 Derating for Low Air Pressure and High Altitudes
The cooling capability of air is decreased at low air pressure. For altitudes above 2000 m (6562 ft), contact Danfoss regarding PELV.
Below 1000 m (3281 ft) altitude, derating is not necessary. For altitudes above 1000 m (3281 ft), decrease the ambient temperature
or the maximum output current. Decrease the output by 1% per 100 m (328 ft) altitude above 1000 m (3281 ft) or reduce the maxi-
mum ambient cooling air temperature by 1 °C (1.8 °F) per 200 m (656 ft).
6.4 General Technical Data
6.4.1 Protection and Features
Electronic motor thermal protection against overload.
Temperature monitoring of the heat sink ensures that the drive trips if there is overtemperature.
The drive is protected against short circuits between motor terminals U, V, W.
When a motor phase is missing, the drive trips and issues an alarm.
When a mains phase is missing, the drive trips or issues a warning (depending on the load).
Monitoring of the DC-link voltage ensures that the drive trips when the DC-link voltage is too low or too high.
The drive is protected against ground faults on motor terminals U, V, W.
6.4.2 Mains Supply (L1, L2, L3)
Supply voltage 380–480 V ±10%
Supply frequency 50/60 Hz
Maximum imbalance temporary between mains phases 3.0% of rated supply voltage
True power factor (λ) ≥0.9 nominal at rated load
Displacement power factor (cosφ) near unity (>0.98)
Switching on the input supply L1, L2, L3 (power-ups) enclosure
sizes I2–I4 Maximum 1 time/30 s
Switching on the input supply L1, L2, L3 (power-ups) enclosure
sizes I6–I8 Maximum 1 time/minute
Environment according to EN 60664-1 Overvoltage category III/pollution degree 2
The unit is suitable for use on a circuit capable of delivering not more than 100000 A
rms
symmetrical Amperes, 480 V maximum.
6.4.3 Motor Output (U, V, W)
Output voltage 0–100% of supply voltage
Output frequency 0–400 Hz
Switching on output Unlimited
Ramp times 0.05–3600 s
6.4.4 Cable Length and Cross-section
Maximum motor cable length, shielded/armored (EMC-correct in-
stallation) See 6.2 EMC Emission Test Results .
Maximum motor cable length, unshielded/unarmoured 50 m (164 ft)
Maximum cross-section to motor, mains See 6.1.1 3x380–480 V AC for more information
Cross-section DC terminals for filter feedback on enclosure sizes
I2–I4 4 mm
2
/11 AWG
AQ367426199594en-000101 / 130R0988 48 | Danfoss A/S © 2021.06
Specifications
VLT® HVAC Drive FC 131
Operating Guide