Product Description:

The FC-301P3K7T2134L2181 is an AC variable frequency drive manufactured by Danfoss for the VLT FC 301 Automation Drives series. Within automated machinery, it sits between the three-phase mains and an induction motor, modulating voltage and frequency so the controller can match shaft speed to process demand. This electronic regulation removes the need for mechanical throttling, improves energy use, and provides precise torque control for conveyors, pumps, and general material-handling equipment.

Incoming power compatibility is 200–240 VAC, and the drive is wired for three-phase feeders to keep conductor currents balanced. At 230 V, the continuous apparent power reaches 6.65 kVA, while efficiency at rated current is 0.96, indicating low internal loss. The resulting power loss is 185 W, a value that can be used to determine enclosure ventilation requirements. The microprocessor can increase motor speed because the adjustable output extends to 590 Hz, well above the base line frequency and suitable for oversynchronous operation when high spindle surface velocity is required.

The inverter delivers a mechanical output of 3.7 kW, and magnetic excitation remains linear up to a flux frequency of 300 Hz, ensuring consistent torque during fast cycles. Shielded cable runs are limited to 50 m, while unshielded leads can extend to 75 m to maintain rise-time and EMC compliance. Phase imbalance must remain below 3.0%, and the digital control inputs tolerate up to 28 V DC, preventing damage from typical sensor voltages. The drive permits two power-ups per minute without triggering inrush protection. Its displacement power factor is greater than 0.98, while its true power factor is at least 0.9, allowing the unit to draw current efficiently. Output voltage can be commanded up to the full supply level for effective motor control across the available operating range.