Product Description:

The VLT 6008 from Danfoss belongs to the VLT 6000 HVAC Drives series and functions as a variable frequency drive that converts fixed-frequency mains power into a modulated output for induction motors. It is used in air-handling units, cooling towers, and pump systems throughout industrial and commercial HVAC installations. Automatic speed control improves energy efficiency, stabilizes process pressure, and extends the mechanical service life of connected equipment.

The drive delivers a typical shaft output of 5.5 kW, making it suitable for midrange ventilation motors. A true power factor of 0.90 keeps displacement current low and reduces utility penalties. Its starting torque reaches 110 % for 1 min to support heavy impellers, while an overload torque margin of 110 % accommodates prolonged load peaks. The drive also provides a breakaway torque of 160 % for 0.5 s to free stuck dampers. Control flexibility is provided through 8 digital inputs that accept on/off, fire-mode, or PID bypass commands. One analog current input and two analog voltage inputs accommodate proportional pressure or temperature reference signals from external control devices.

During acceleration, the inverter maintains 100 % rated torque so speed ramps do not compromise airflow setpoints. Its power stage can tolerate a maximum short-circuit current of 100 000 A, supporting coordination with appropriately rated circuit breakers and protective devices. Motor leads can extend up to 150 m when shielded cable is used or 300 m when unshielded cable is used. These cable allowances give panel designers flexibility when separating heat-generating drives from rooftop or basement equipment. Two relay outputs and two configurable digital or analog outputs provide connections for operating status, alarms, and external control functions. Three pulse inputs and support for 1.5 mm² control wiring complete the interface set for connection to building management systems.