Product Description:

The FC-301P15KT4134L2173 is an AC variable frequency drive produced by Danfoss within the VLT FC 301 Automation Drives series. The unit converts fixed-frequency plant power into a modulated output that allows controllers to match motor speed to process demand. By regulating voltage and frequency, it helps reduce energy consumption and mechanical stress in pumps, fans, and material-handling equipment on industrial lines. The compact enclosure supports installations where available panel space is limited.

Delivering a continuous mechanical output of 15 kW, the drive can run medium-sized induction motors. Its input section accepts 380–480 VAC from three-phase power and maintains a displacement power factor higher than 0.98 to limit reactive current. Internally, the control electronics scale the bus voltage so that the inverter can synthesize any frequency between 0–590 Hz; this range permits overspeed operation or very slow crawl modes when required. Phase imbalance must remain within 3 % of the rated line voltage to protect the rectifier stage. Bus capacitors are monitored for rapid excursions toward the 810 V DC warning threshold.

The modulation stage can vary the motor terminal voltage from 0–100% of the supply voltage, allowing open-loop vector control at low and high speeds while maintaining a true power factor of ≥0.9 under rated load. The drive accepts supply frequencies of 50/60 Hz ±5%, allowing the same model to operate with either common utility standard. Auxiliary terminals deliver 10.5 V at 15 mA and 24 V at 200 mA for sensors and I/O devices. Dynamic braking engages at 778 V DC to dissipate excess energy. A high-voltage alarm occurs at 810 V DC, and an overvoltage alarm occurs at 820 V DC to protect the DC bus. Flux mode can be limited to 300 Hz for fan applications.