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VAREOTRON MFR 330 image #1

The units of the VAREOTRON MFR 330 series are microprocessor-controlled devices for varying the operating speed of three-phase motors.

The units generate a mains-independent operating frequency of 2...120 Hz for the motor. The built-in LED display shows motor speed as a percentage. Especially for material feed applications, a backlog detector function (level control) has been included, which stops the material flow in case of a backlog.

Material detection is done by means of 24 VDC PNP sensors.

Furthermore, the direction of rotation can be reversed. Two speed setpoints are adjustable. Soft-start and soft run-down are selectable. If the sensor detects no material within an adjustable time period, the "sensor timeout" function switches the motor off.

The unit has a mains switch, a mains connecting lead, a 4-pin output socket for connecting the motor, and output sockets for the control function. A built-in fuse protects the output circuit from overload.

The enclosure provides IP 54 protection and can be mounted directly on the feeder device. Electrical connections are made via a cable with plug and a 4-pin output socket.

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Code Type Supply Voltage (V) Output Voltage (V) Enable Relay Operating Temperature (C) Protection Rating Availability Data Sheet  
MFR 330 Frequency controller for AC motors 230 +/-10% 3 x 220 24 V, DC or K Changeover contact 250V 0...+45 IP54 Upon Request Datasheet PDF Enquire Now

Technical Diagrams