Product Description:

The FC-301PK37T4134L2946 is an AC variable-frequency drive manufactured by Danfoss for the VLT FC 301 Automation Drives series. By synthesizing adjustable output voltage and frequency from a three-phase supply, the drive lets PLCs match motor speed to actual demand, reducing energy use and mechanical wear in automated lines. Its compact footprint allows easy integration into control panels for light-duty conveyors, dosing pumps, and ventilation fans that require tight speed regulation of small-horsepower induction motors.

Its continuous apparent power is 0.9 kVA at 400 V, indicating how much volt-ampere load the inverter can support without derating. To supply that load, the unit can deliver a continuous output current of 1.3 A at 380–440 V, which guides conductor sizing and overcurrent protection. Grid utilization is high because the displacement power factor is above 0.98, so very little reactive power is drawn. Conversion losses remain modest because efficiency at rated current reaches 0.93, meaning only a small fraction of input energy is lost as heat. Process versatility is provided by an output frequency range of 0–590 Hz, enabling both slow-speed torque control and operation above synchronous speed from the same device.

The output voltage spans 0–100% of the supply voltage, allowing torque to be adjusted without external transformers. Even at rated load, the electronics dissipate only 35 W, so enclosure cooling requirements remain modest. The converter is intended for three-phase power networks in the 380–480 VAC class and tolerates line frequencies of 50/60 Hz ± 5%, permitting use on different power grids without hardware changes. A 0.50 HP mechanical rating combined with 0.37 kW of electrical power identifies it as a small-frame drive. Internal logic limits power-ups to two per minute to protect the DC-link components. Up to 50 meters of shielded motor cable can be installed before additional filtering is necessary.