Product Description:

The FC-301P1K1T4131G4703 is a variable frequency drive manufactured by Danfoss for the VLT FC 301 Automation Drives series. It converts 380–480 VAC three-phase mains power into a regulated output that allows machinery to vary speed while maintaining linear torque. The unit supplies two auxiliary power sources: a 10 V reference capable of 15 mA for analog setpoints and a 24 V rail rated at 200 mA for sensors. These sources work with the built-in digital outputs to support local sequencing without a PLC.

Operating from a 380–480 VAC supply, the drive draws a nominal input current of 2.7 A when energized on 400 V lines and delivers an output current of 3.0 A to the motor terminals. These currents support a continuous mechanical output of 1.1 kW, equivalent to 1.5 HP, while the apparent power drawn from the mains is 2.1 kVA. Power quality is maintained by a displacement power factor greater than 0.98 and a true power factor of at least 0.9, limiting the reactive load placed on upstream transformers. The drive tolerates a phase imbalance of 3% and maintains stable flux regulation at frequencies up to 300 Hz. Closed-loop control supports a maximum output frequency of 590 Hz for high-speed induction motors.

The drive has an efficiency of 0.96, resulting in 58 W of heat loss at nominal load. This heat output keeps the unit within its full-current ambient temperature limit of 45 °C without external cooling. Full output is available at elevations up to 1000 m, while operation above this elevation requires derating. Control wiring is handled by a programmable transistor stage that can sink or source 40 mA, enabling direct actuation of relays or optically isolated inputs. The transistor stage provides a practical interface for external control devices while reducing the need for additional signal hardware.