175H8858 Danfoss
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The 175H8858 is a variable speed drive from Danfoss and part of the VLT 3000 Variable Speed Drives series. It supports a motor power of 2.2 kW and a rated output current of 4.8 Amps, with a rated motor frequency of 60 Hz. The drive allows a maximum input current of 4.8 Amps and tolerates input voltage variations of plus or minus 10 percent.
Internal Product Review
The 175H8858 from the Danfoss VLT 3000 Variable Speed Drives series delivers precise motor control with a 2.2 kW motor power rating and 60 Hz motor frequency. Its input voltage tolerance of ±10% and rated output current of 4.8 A ensure reliable operation in demanding environments. This drive is a strong choice for applications requiring stable speed regulation and efficient performance.
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Product Description:
The 175H8858 is an AC variable frequency drive produced by Danfoss within the VLT 3000 Variable Speed Drives series and is designed for industrial motor control. The unit converts fixed-frequency mains power into a controllable output that matches the torque and speed demands of connected induction motors under changing process loads in conveyors, pumps, and other automated machinery. By adjusting output frequency and voltage in real time, it enables closed-loop speed regulation without mechanical gear changes, supporting compact cabinet layouts and energy-efficient motion tasks across industrial plant floors.
Line voltage can fluctuate by up to ±10% without derating, providing tolerance for unstable supply networks. The drive supports motors with ratings up to 2.2 kW and delivers a nominal output frequency of 60 Hz. Both the rated output current and the maximum input current are limited to 4.8 A, so cabling, circuit breakers, and thermal sensors can be sized uniformly. For field wiring, the power terminals accept conductors with a cross-sectional area of 2.5 mm², reducing enclosure space while keeping the temperature rise within permissible limits.
Upstream short-circuit protection is provided by a 16 A pre-fuse that disconnects the drive before semiconductor damage occurs. Acceleration and deceleration are governed by Ramp 1, which provides a symmetrical duration of 5 seconds for both upward and downward ramps, allowing gradual speed transitions that limit mechanical stress on couplings. The logical start input supports one operation per minute, which prevents the input circuitry from overheating during frequent command cycles. These settings are stored in the factory configuration and can be modified through the standard Danfoss keypad to match the operating requirements of an individual machine.
