175L1001 by Danfoss

The 175L1001 is a variable frequency drive produced by Danfoss within the VLT 3000 Variable Speed Drives series. The unit converts fixed-frequency three-phase mains power into a controlled AC output that enables induction motors to accelerate, decelerate, and hold precise speed setpoints. In automated conveyor lines, pump stations, or fan arrays, the drive replaces mechanical throttling with electronic regulation, reducing energy demand and improving process stability.

Operating efficiency reaches 0.96 at full load, meaning only four percent of the supplied electrical power is lost as heat during typical duty cycles. When running a motor up to its design rating, the drive can deliver 1.5 HP of mechanical output, which is suitable for small process pumps and material-handling equipment. The power stage is rated for a maximum output frequency of 500 Hz, allowing oversynchronous operation where high-speed spindles or blowers are required. Continuous torque delivery is supported by a rated output current of 2.6 A, and the inverter's apparent output capability is 2.3 kVA, which is the volt-ampere capacity available to the connected machine.

Upstream circuit breakers or fuses should be selected not to exceed 10 A, guarding the rectifier and IGBT bridge against destructive fault currents. The electronics tolerate ambient moisture up to 95 % relative humidity without condensation, allowing the enclosure to operate in washdown areas when mounted inside a sealed cabinet. Thermal ratings permit continuous service from -10 °C to 40 °C, so cooling air must be routed if panel temperatures climb beyond this threshold. A vibration endurance test of 0.7 g confirms the mechanical design for installation on equipment frames exposed to persistent machine-borne oscillations.