Product Description:

The FC-301P55KT4134L2927 is a variable frequency drive produced by Danfoss for the VLT FC 301 Automation Drives series. Installed in a control cabinet, this component modulates the three-phase supply to match the torque and speed demands of induction motors. Its compact design supports coordinated control of conveyors, pumps, and fan loads in automated production and building-service installations.

The drive is sized for 55 kW of continuous mechanical output, so it can operate mid-range actuators without oversizing the installation. It accepts a three-phase utility supply of 380–480 VAC and supports an output frequency of up to 590 Hz, allowing high-speed motor operation when process throughput must increase. Efficiency at nominal load reaches 0.98, reducing heat losses inside the enclosure. One analog output with 12-bit resolution delivers scaled feedback, such as a speed signal, to external indicators or PLC analog inputs. Two digital outputs provide binary status signals and can source up to 40 mA to operate indicator lamps or interlock relays. The design permits one power-up per minute, protecting the intermediate-circuit capacitors from stress caused by rapid restarts.

The displacement power factor is greater than 0.98, while the true power factor is at least 0.9, which keeps reactive current low. The inverter withstands a maximum supply phase imbalance of 3.0% without tripping. Its output can use shielded motor cables up to 50 m long or unshielded cables up to 75 m long. Flux mode operation is limited to 300 Hz to maintain proper stator magnetization during high-speed operation. Input phase sequence variations are tolerated because the control logic automatically adapts operation to the incoming supply. The drive also supports one analog output and two digital outputs, allowing it to exchange operating signals with external control equipment without requiring an additional interface module.