FC-301PK55T4134L2979 Danfoss
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The Danfoss FC-301PK55T4134L2979 is an automation drive from the VLT FC 301 Automation Drives series and operates on three phase power with a mains voltage range of 380 to 480 VAC. It delivers a power rating of 0.55 kW and 0.75 horsepower, with an efficiency of 0.95 at rated current. The drive offers a maximum output frequency of 590 Hz and supports analog output resolution of 12 bits.
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Product Description:
The FC-301PK55T4134L2979 is an AC variable frequency drive manufactured by Danfoss for the VLT FC 301 Automation Drives series. Installed between a plant’s three-phase mains and an induction motor, the unit modulates voltage and frequency to regulate motor operation. This control allows conveyor, pump, or fan speed to match demand while reducing energy consumption during partial-load operation.
The inverter accepts a line supply of 380–480 VAC and is rated for an output of 0.55 kW (0.75 HP) while drawing 1.3 kVA of continuous apparent power. When loaded to its rated current, conversion efficiency reaches 0.95, and thermal dissipation is limited to 42 W. The maximum fundamental output frequency is 590 Hz, although closed-loop flux control is limited to 300 Hz. A 10 V reference rail supplies 15 mA, and the 24 V auxiliary supply provides 200 mA for sensors. Command signals are received through digital inputs that tolerate up to 28 VDC, and a single pulse input can track feedback up to 110 kHz. The analog output has 12-bit resolution, while the digital relay can switch 40 mA for status indication or interlocking. Power is supplied through three-phase terminals, and all input and output circuits share a common protective earth under the drive’s category C EMC layout.
A starting torque of 160% for 60 seconds lets the drive overcome static friction in loaded machines. An overload reserve of 110% for 0.5 seconds is permitted once every ten minutes for brief transients. Torque develops quickly because sensorless flux mode responds in 1 ms, whereas the VVC+ algorithm reaches the requested value in 10 ms. This rapid response supports indexing, jogging, and process-paced duties that require prompt changes in motor torque or speed. The available overload capacity also helps the connected motor manage short acceleration demands without requiring an external soft starter. Digital and analog interfaces allow the controller to exchange commands, feedback, and operating status with the surrounding control system.
