195N0039 by Danfoss

The 195N0039 is a variable frequency drive produced by Danfoss within the VLT 2800 Low Voltage Drives series. Designed for general automation, the unit converts fixed mains power into a modulated output that allows precise speed and torque control of small AC induction motors used in conveyors, mixers, or auxiliary process equipment. By integrating the control electronics and power stage in one compact assembly, the drive streamlines installation in control panels where space and wiring simplicity are critical.

The drive delivers a continuous output of 1.1 kW, which indicates the motor power it can support. Its input supply must be in the 200-240 V AC range, so it interfaces directly with common low-voltage grids without an autotransformer. Internal rectification and inversion are dimensioned for single-phase input, reducing the number of conductors required in the cabinet. This corresponds to 1.5 HP, matching many fractional-horsepower pumps and blowers. The enclosure has an IP20 rating, which protects against fingers and small solid objects while allowing panel ventilation. An integrated radio-frequency interference filter complies with EN 55011 Class A1, limiting emitted noise so the drive can operate alongside sensitive instrumentation on industrial floors.

Operator interaction occurs through the built-in display (SLCP), which shows setpoint, frequency, and diagnostic codes without an external keypad. The slim book-style housing enables side-by-side mounting to maximize cabinet density. Because the unit targets process duties, its parameter menus prioritize control modes such as ramped start and stop and PID feedback that are typical in flow or pressure loops. A standard hardware configuration, the absence of optional application or fieldbus cards, and a plain, uncoated circuit board reduce part count when the drive is used in benign indoor atmospheres.