175H1016
by Danfoss
The 175H1016 is a variable frequency drive built by Danfoss and supplied in the VLT 3000 Variable Speed Drives series. It converts fixed-frequency three-phase mains power into a regulated AC output so that induction motors can be matched to the torque and speed demands of automated machinery and process equipment. By integrating current modulation, ramp control, and electromagnetic compatibility features, the unit occupies the role of speed governor and motor protector within industrial automation lines.
This model delivers a rated motor capacity of 3 HP, aligning with small to mid-frame pumps, conveyors, or fans that do not exceed this mechanical demand. The drive housing is certified to IP54, so internal electronics are protected against limited dust ingress and water spray during cabinet-door mounting. Under full load its conversion efficiency reaches 96%, indicating minimal heat loss and allowing smaller ancillary cooling hardware. The input stage accepts line frequencies of 50/60 Hz; the control section then synthesizes output frequencies up to 500 Hz, permitting either standard motor speeds or over synchronous operation when motor design allows. Together these figures define the electrical window and thermal envelope the user must observe when selecting supply components and motor insulation classes.
Environmental and dynamic parameters round out the profile. The drive operates between +40 C and -10 C, while storage is permitted up to +65 °C, so separate winter or high-rack warehousing is unnecessary. Acceleration and deceleration can be shaped with ramp times spanning 3600 s down to 0.1 s, providing either gentle starts for fluid systems or rapid stops for indexing equipment. Input contactors may be closed up to five times per minute, and the output stage supports unlimited switching, useful for automated sequences with frequent run commands. An integral RFI filter suppresses conducted emissions to adjacent control gear.
