195N1055 by Danfoss

The 195N1055 is an AC variable frequency drive produced by Danfoss and supplied within the VLT 2800 Low Voltage Drives series. This compact unit accepts three-phase mains power, rectifies it, and generates a controlled output frequency so that motor speed follows process demand instead of running at fixed line speed. By regulating velocity and ramp profiles, the drive reduces mechanical stress, cuts energy consumption, and supports precise motion sequences in automated conveyors, HVAC fans, and pump stations.

On the input side, the drive is rated for 3 × 380-480 V ±10% 50/60 Hz, allowing direct connection to common industrial low-voltage networks. It is wired for a three-phase supply, which spreads current across all phases and helps limit harmonic distortion. The inverter section delivers a continuous mechanical output of 0.55 kW, equivalent to 0.75 HP, for small centrifugal pumps and light conveyor zones. Its apparent input demand is 3.6 kVA, which is useful when sizing upstream fuses, contactors, and transformer capacity. These values indicate the normal operating range and help match the drive with suitable motors and incoming power.

Mechanical integration is simplified by a chassis that measures 267.5 × 90 × 168 mm and weighs 3.7 kg, so the drive can mount inside crowded control panels without extra bracing. The housing has an IP20 rating, which protects against accidental finger contact with live parts while relying on the cabinet for dust and moisture protection. For higher-level automation, the control board supports Profibus DP communication, enabling parameter adjustment, status monitoring, and fault reporting from a centralized PLC. The compact enclosure and fieldbus support make the unit suitable for cabinet installations that need remote monitoring, centralized control, and orderly panel layouts.