FC-301P55KT4131X4427 Danfoss
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The FC-301P55KT4131X4427 is a drive from Danfoss and is part of the VLT FC 301 Automation Drives series. It operates on three phase power with a mains voltage of 380 to 480 VAC and delivers a rated power of 75 hp at 460 V. The drive features 12-bit analog output resolution, two digital or pulse outputs, and a maximum output frequency of 590 Hz.
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Product Description:
The FC-301P55KT4131X4427 is an AC variable frequency drive produced by Danfoss within the VLT FC 301 Automation Drives series. The unit converts fixed-frequency, three-phase mains power into modulated voltage that allows control systems to vary motor speed and process throughput. It is intended for conveyor, pump, and fan applications where precise torque management, energy savings, and networked diagnostics are required in industrial automation.
Designed for standard plant supplies, the drive accepts a 380–480 VAC three-phase input and delivers up to 55 kW at 400 V or 75 hp at 460 V to the motor terminals. Its inverter section can generate frequencies up to 590 Hz, allowing high-speed spindle or blower operation, while the internal pulse generator reaches 110 kHz to support fast feedback counters. Analog process values are returned to controllers with 12-bit resolution, providing 4,096 discrete steps for proportional feedback loops. Protective algorithms tolerate a maximum phase imbalance of 3.0%, and flux-mode excitation is limited to 300 Hz to reduce rotor heating. Internally, the pulse-width modulation stage can switch at up to 32 kHz to minimize acoustic noise. One power-up per minute is permitted to reduce inrush stress on the DC link.
Each of the two digital or pulse outputs can source up to 40 mA, while six digital inputs accept levels up to 28 V DC with an input resistance of 4 kΩ. The safe-torque-off circuit draws only 50 mA RMS, simplifying emergency-stop contact sizing. Power quality is maintained by a displacement factor greater than 0.98 and a true power factor of at least 0.9, so upstream breakers experience minimal reactive load. The available digital inputs and outputs support direct exchange of status and command signals with standard PLC hardware. The drive’s soft-charge network controls current flow into the DC-link capacitors during startup. Its control interfaces also support feedback and pulse signals used in automated motor systems.
