Product Description:

The 131B3301 is an AC variable-frequency drive produced by Danfoss for the VLT FC 301 Automation Drives series. Within an automated production line, it modulates the electrical waveform supplied to an induction motor, allowing controlled starting, stopping, and speed regulation. This functionality supports conveyors, pumps, and general process equipment that must operate at adjustable speeds. Electronic motor control also reduces dependence on mechanical throttling devices and other external methods of regulating process output.

This model connects to an industrial mains supply between 380–480 VAC and operates on three-phase power. The inverter provides a continuous mechanical output of 0.55 kW, which is equivalent to 0.75 HP and is suitable for compatible small-frame IEC motors. Its control board has no conformal coating, so the installation area should protect the internal electronics from excessive moisture, conductive dust, and corrosive airborne contaminants. The integrated DC link conditions incoming energy before the switching bridge produces the variable-frequency output supplied to the motor. A Safe Stop input activates an internal circuit that removes motor torque when the associated safety circuit calls for a stop. This function can be incorporated into a suitable machine safety system without requiring the drive to continue producing torque during the stop condition.

Power and control conductors pass through standard cable entries, supporting conventional cabinet wiring and organized separation of signal and power cables. The enclosure carries an IP20 rating and is intended for installation inside a cabinet that provides the necessary protection from water, dust, and accidental contact. An integrated EMC filter attenuates conducted electromagnetic interference and may reduce the need for additional external filtering in suitable installations. The detachable Graphical Local Control Panel provides direct access to operating values, status information, and adjustable drive parameters. Its graphical interface helps users review motor data and operating conditions from the front of the cabinet. The compact housing fits standardized backplates and leaves the option slots, mains option bay, and adaptation features unpopulated for a basic drive configuration.