175H1027

Product Description:

The 175H1027 variable frequency drive is built by Danfoss as part of the VLT 3000 Variable Speed Drives series. Intended for integrating induction motors into automated lines, the unit modulates the stator frequency and voltage to match process demands while protecting the connected machine. With a compact footprint, it is typically deployed on fractional-horsepower pumps, small conveyors, and ventilation fans where regulated speed improves process accuracy and reduces energy waste.

In constant torque mode the drive supplies 1 HP of mechanical output and delivers a continuous current of 2.8 A, corresponding to an output apparent power of 2.0 kVA. Under full load it operates with an efficiency of 96%, limiting heat generation inside control cabinets. A three-phase 3-Phase AC mains supply feeds the converter, and source switching is allowable up to 5 operations per minute; this ceiling minimises mechanical wear on upstream contactors. The modulation stage supports frequencies up to 500 Hz, enabling high-speed spindle or blower applications. Field wiring accepts conductors up to AWG 12, and the control platform tolerates ambient moisture to 95 % relative humidity for installation in humid production zones. Because the algorithm uses pulse-width modulation, motor current remains sinusoidal and avoids excessive harmonic content on the supply.

For short duty peaks the inverter can supply 3.5 A for 60 s, drawing no more than 2.5 kVA of apparent input power during that interval. Motor leads may extend to 1000 ft (unshielded) without additional output filters, supporting remote pump or fan mounting. Thermal design allows continuous operation up to +40 °C, while non-operating storage is admissible up to +65 °C provided cabinet humidity is controlled. Together these limits define the service envelope for start-stop applications that require precise torque pulses without exceeding cable, temperature or power margins.