Product Description:

The FC-301P1K5T4131X7951 is an AC variable frequency drive in the VLT FC 301 Automation Drives series produced by Danfoss. As a drive controller, it converts fixed-frequency three-phase mains power into a regulated output that lets control systems vary induction motor speed according to real-time load requirements. This electronic regulation is widely used in automated conveyors, pump skids, and fan arrays where precise acceleration, deceleration, and steady-state speed adjustment are necessary for process efficiency.

The power section accepts a nominal input of 380–480 V AC and delivers up to 1.5 kW of continuous motor power. With an efficiency of 0.97, most of the supplied energy reaches the motor terminals rather than being dissipated as heat. For high-speed applications, the inverter can produce a maximum output frequency of 590 Hz, while motor flux is limited to 300 Hz to reduce core losses. During demanding cycles, the current regulator tolerates a transient draw of 5.9 A across the 380–440 V range, providing a short-term torque boost without nuisance trips. Dynamic braking energy is routed to an internal chopper that activates when the DC-link voltage reaches 728 V DC, allowing rapid stops when an external brake resistor is connected.

An overvoltage alarm is raised if the DC bus reaches 820 V DC, prompting the control system to reduce the regenerative load. The drive’s internal power losses are limited to 62 W, so cabinet cooling requirements remain modest. Shielded motor cables may run up to 50 m, while unshielded motor cables may extend to 75 m, providing flexibility for distributed machinery. Logic terminals tolerate 28 V DC on digital inputs. The gate pattern can switch at 110 kHz, provided that each pulse has a minimum width of 4.5 µs. At rated speed, the inverter supplies 4.1 A to the motor with an apparent power of 2.8 kVA.