Product Description:

The FC-051P4K0T4E20H3BXC/UPS is a variable-frequency inverter produced by Danfoss for the VLT FC 51 Micro Drives series. This chassis-mounted device converts fixed-frequency mains power into a modulated output that allows industrial controllers to regulate the speed and torque of compatible induction motors. Its compact format supports installation in control panels and small machine frames used with conveyors, pumps, fans, and general factory automation equipment. Electronic motor control also allows operating speed to follow process demand without relying on mechanical throttling devices.

The drive provides a continuous output of 4.0 kW for compatible motors operating within the unit’s current and thermal limits. Its input section accepts a line supply of 380–480 VAC, covering common industrial networks in the 400 V and 460 V ranges. Operation requires a three-phase source, which supplies the inverter power stage through the designated mains terminals. The IP20 chassis enclosure provides protection against accidental finger contact with internal components but requires installation inside a suitable cabinet where dust or moisture may be present. An integrated Class A1/B RFI filter attenuates conducted electrical interference and reduces the need for a separate line filter in installations that satisfy the applicable wiring and grounding requirements.

The unit includes a brake chopper that allows a compatible external braking resistor to absorb regenerated energy during rapid motor deceleration. This feature helps control DC-bus voltage when a driven load returns kinetic energy to the inverter. The coated printed circuit boards resist the effects of humidity and light airborne chemical contaminants, providing additional protection for the control electronics. The drive is supplied without a local control panel, so parameter access and operating commands require a compatible external programming or control interface. Cabinet placement should provide sufficient clearance for airflow around the chassis because heat generated by the power electronics must dissipate during continuous operation. Motor, mains, control, and braking connections must be routed through their assigned terminals to maintain electrical separation and reliable inverter operation.