Product Description:

The 195N1056 is an AC variable-frequency drive produced by Danfoss for the VLT 2800 Low Voltage Drives series. In automated plants, it modulates three-phase supply power so induction motors can run at commanded speeds, allowing conveyors, pumps, or mixers to track process demand without mechanical throttling. An integral brake circuit dissipates regenerated energy during rapid stops.

During operation, the drive draws an input line current of 4.7 A and delivers up to 5.2 A at its motor terminals. This power conversion occurs with a measured efficiency of 96%, so most of the absorbed power reaches the load instead of becoming heat. The electronic controls process setpoints with a 10-bit analog output resolution, and five digital inputs accept start, stop, or preset speed commands from PLCs. Usable shaft power reaches a 0.55 kW rating. Communication with distributed control systems is available over PROFIBUS at a maximum bus speed of 3 Mbit/s, enabling parameter adjustment and status polling through a single twisted-pair network. Continuous operation produces 110 W of internal power loss, which the heat sink expels into the enclosure airflow.

The drive is housed in an IP20 casing for mounting inside a sealed cabinet, and upstream protection may be coordinated with a 20 A prefuse so the semiconductor rectifiers are not overstressed. The power stage supports branch circuits with a prospective fault current of up to 100,000 A because it has been tested for this short-circuit capacity. Conducted emissions are limited by an internal radio-frequency interference filter that meets EN 55011-1A. The relationship between current and voltage results in a corrected true power factor of 0.90. Auxiliary control electronics can draw 130 mA from the integrated 24 V source, allowing local relays to be wired without a separate supply. The enclosed installation also helps protect users from accidental contact with energized components while allowing cabinet ventilation to remove operating heat.