FC-301P37KT4134L2658 Danfoss
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The Danfoss FC-301P37KT4134L2658 is part of the VLT FC 301 Automation Drives series and provides a power rating of 37 kW or 50 HP. It operates on three phase power with a mains voltage range of 380 to 480 VAC and supports a maximum mains phase imbalance of 3.0%. The drive features 2 digital outputs, a 12 bit analog output resolution, and supports shielded motor cables up to 50 meters and unshielded motor cables up to 75 meters.
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Product Description:
The FC-301P37KT4134L2658 is an AC variable-frequency drive manufactured by Danfoss for the VLT FC 301 Automation Drives series. It connects to three-phase power systems and modulates motor speed for automated equipment in material handling, HVAC, and processing lines. The drive is intended for variable-speed control of standard industrial motors in applications that need controlled acceleration, deceleration, and steady-state speed regulation. Its core function is to deliver controlled motor torque from startup through full load.
This drive supplies a continuous mechanical output of 37 kW and a shaft rating of 50 HP. It accepts input supplies between 380 – 480 VAC and maintains a power factor of ≥0.9 under nominal conditions. It tolerates line-phase imbalance of up to 3.0%, and the start sequence is limited to one power-up per minute to reduce capacitor stress. Internally, the unit issues an overvoltage alarm at 820 V DC, and it will trip if that threshold is exceeded. The power stage uses three-phase IGBT modules that support shielded motor cables up to 50 m or unshielded motor cables up to 75 m. Relay output contacts can switch 240 V AC at 2 A for fan starters or contactor coils, and two digital outputs handle status signaling.
Control electronics include a 12-bit analog output for real-time speed feedback. Two digital inputs are rated for 28 V DC logic, and the Safe Torque Off channels draw 50 mA rms each. The digital outputs can source up to 40 mA to drive optocoupler circuits, and the shielded motor connection length is limited to 50 m to help keep conducted emissions within limits. These interfaces support signal exchange between the drive, external controls, and connected motor circuits during normal operation.
