FC-301P37KT2134L2977 Danfoss
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The Danfoss FC-301P37KT2134L2977 is part of the VLT FC 301 Automation Drives series and supports a power rating of 37 KW with 50 horsepower for three-phase power systems. It offers two digital outputs at 40 mA each, a maximum output frequency of 32 kHz, and can be connected to shielded motor cables up to 50 meters. The analog output accuracy is 0.5 percent full scale, and the drive operates at a mains voltage of 200 to 240 VAC.
Internal Product Review
The FC-301P37KT2134L2977 is a Danfoss VLT FC 301 automation drive rated at 37 kW for 200 to 240 VAC operation. Three-phase power input and a true power factor of at least 0.9 support efficient integration in motor control panels. Strong electrical performance makes the unit a very capable choice for demanding variable-speed drive service.
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Product Description:
The FC-301P37KT2134L2977 is an AC variable-frequency drive manufactured by Danfoss and supplied within the VLT FC 301 Automation Drives series. It converts fixed-frequency line power into a modulated electrical output for induction motors. The regulated output controls motor speed in pumps, conveyors, and general material-handling equipment used in automated plants. Its internal 301 identifier places the model in the VLT AutomationDrive FC product group.
The drive supplies a continuous motor output of 37 kW, which is equivalent to 50 HP, when connected to a 200–240 VAC supply. It is designed for three-phase power networks and can produce pulse-width-modulated carrier frequencies as high as 32 kHz for precise current shaping. One analog output is available with an accuracy of 0.5% of full scale, and it supports loads below 500 Ω for proportional feedback to supervisory controllers. Two digital outputs can each source up to 40 mA, while the input bank has a resistance of 4 kΩ for direct connection to PLC logic. Motor cables may extend up to 50 m when shielded or 75 m when unshielded. These cable allowances permit placement of the inverter away from the motor while accounting for voltage drop and radiated emissions.
The dynamic brake engages when the DC link reaches 390 V DC, while an overvoltage alarm is activated at 410 V DC. A preliminary warning occurs at 405 V DC, allowing the machine control to initiate a soft stop before the alarm threshold is reached. Control terminals accept command signals up to 28 V DC, supporting compatible low-voltage control devices. Under nominal load, the converter maintains a true power factor of at least 0.9 to reduce reactive current drawn from the line supply. The voltage thresholds support coordinated operation with upstream circuit breakers, braking equipment, and plant monitoring systems. The warning and alarm stages also provide separate responses for controlled deceleration and overvoltage protection.
