Product Description:

The FC-301P55KT4131F1222 is an AC variable frequency drive manufactured by Danfoss for the VLT FC 301 Automation Drives series. It converts fixed-frequency mains power into variable voltage and frequency so plant controllers can match induction motor speed to process demand. This functionality makes the product a compact motion component for conveyor sections, pumps, and other automated machinery.

Rated output power reaches 55 kW, which corresponds to a mechanical shaft capability of 75 hp. The input section accepts 380–480 VAC from a three-phase power network, so no step-down transformer is needed in typical industrial panels. Control electronics sample analog status signals with a resolution of 10 bits, while digital inputs tolerate 28 V DC and present a 4 kΩ pull-up path that prevents floating states. A relay rated at 240 V AC and 2 A provides form-C contact feedback to external alarms. The drive supplies 24 V DC logic through a regulated tap of 24 V (+1/-3 V) for field sensors. Its terminal blocks accept conductors up to 1.5 mm² (16 AWG), simplifying cabinet wiring. A 40 mA digital output can energize low-current status indicators.

For downstream devices, the analog output channel updates at a resolution of 12 bits, allowing smooth reference signals to connected regulators. The auxiliary supply can deliver up to 200 mA, supporting encoders and other low-power field devices without an additional power supply. Motor leads may run through shielded cable for up to 50 m or through unshielded cable for up to 75 m, enabling remote installation of the inverter in centralized enclosures. Under nominal load, the unit maintains a true displacement power factor of at least 0.9, reducing reactive current drawn from the facility bus. These values allow cable lengths, field devices, and control circuits to be selected within the drive’s stated operating limits.