VLT 6006 Danfoss
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The Danfoss VLT 6006 is part of the VLT 6000 HVAC Drives series and is designed for three-phase supply with a typical shaft output of 4.0 kW. This 5 HP drive delivers a starting torque of 110% for one minute and a break-away torque of 160% for half a second. It supports a maximum altitude of 1000 meters and has a true power factor of 0.90.
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Product Description:
The VLT 6006 is an AC variable-frequency HVAC drive produced by Danfoss within the VLT 6000 HVAC Drives series. The unit converts utility power into a modulated output that allows building automation systems to regulate fan and pump speeds for energy-efficient climate control. By varying motor frequency and voltage rather than relying on mechanical dampers, the drive reduces wear, lowers power consumption, and maintains stable airflow and water circulation throughout a building. Its variable-speed output also allows connected equipment to respond more closely to changing heating, ventilation, and cooling demands.
The drive provides a continuous shaft output of 5 HP across three input phases. The inverter accommodates line variations within a supply tolerance of ±10% and can generate output frequencies up to 1000 Hz, allowing it to support compatible high-speed motors without external gearboxes. During startup, the control algorithm supplies 110% starting torque for one minute. A short breakaway torque of 160% for 0.5 seconds is also available to overcome static friction in closed dampers or valves. The drive has a power factor of 0.90, which supports effective transformer and distribution-system use. Unlimited output switching permits contactor isolation without derating, while a maximum power cable cross-section of 4 mm² accommodates typical power wiring used with this drive.
The drive can be installed at elevations up to 1000 m above sea level without a reduction in current capacity. It can operate at ambient temperatures as low as −10 °C with reduced performance and tolerate 95% noncondensing relative humidity. Semiconductor protection against supply faults supports a prospective short-circuit current of 100,000 A, allowing appropriate upstream protective devices to interrupt high fault currents. Programmable acceleration or deceleration can extend to 3600 seconds, enabling pump systems to change speed gradually and reduce the risk of hydraulic shock. These adjustable ramp times also help fans accelerate smoothly, limiting abrupt airflow changes and reducing mechanical stress on connected belts, couplings, and duct components.