The optimum motor control

NFO Drives develops frequency inverters with a unique patented technology used for motor control of electric motors. The company's technology differs from all other manufacturers in the following way: NFO Sinus reshapes the frequency of the sine curve while maintaining a pure sine curve. The main argument for choosing NFO frequency inverters is reduction of bearing damage due to the fact that the patented technology creates no bearing currents, which in turn means cost-effective, uninterrupted operation of motors.

Simple installation

Silent operation

Safe technology

+ No shielded cables
+ No complicated installation requirement
+ No limitations of distance...
+ No electomagnetic interference
+ No irritating switching noise
+ No bearing currents
+ No earth currents

A profitable investment

With the NFO Sinus frequency inverter you can control the speed of electrical motors for machines, fans and pumps and save energy. An investment often pays for itself within a year.

Product range

NFO comes in the following power ratings and housings:

Choose correct Inverter, Contact NFO Drives!

Choose the correct inverter dimension for the motor to be controlled: Read the motor’s nominal current from its rating plate and choose an inverter that is able to supply this current on a continously basis.

An NFO inverter can be used to control several motors by ensuring there is sufficient current.

Example: To control three motors with a nominal current of 2.1 A (6.3 A in total), choose a 3.0 kW inverter with a continuous discharge current of 6.7 A.
A smaller inverter can be chosen if you know that the motor will not be running at full current.
If you want to be able to load the motor above its nominal current, take this into consideration when choosing an inverter.



Quick Installation Guide gen2-5
User´s Manual 400V, 3-fas matning 0,37-15 kw
Supplement of manual 18,5kW -22kW
Supplement of manual 0,37kW-3kW
Communication supplement ver. 2.03 2013
Old manuals
Fieldbus Interface Communication ver. 1.1
Serial Interface ver 5.0
0,37 – 15kW serie G2 ver. 3.4 fr.o.m. 2009-03-20
0,37 – 15kW serie G2 ver. 3.3 fr.o.m. 2008-01-01
0,37 – 15kW serie G2 ver. 3.2 fr.o.m. 2007-05-02
1,5 – 15kW serie G2 ver. 3.1 fr.o.m. 2006-06-28
0,37 – 11kW ver. 2.8 gamla 1-fas – och 3-fas matade
Download NFO Sinus Manager v. by clicking on the link to the right.
 NFO Sinus Manager properties
  • Easy to manage multiple parameter settings for more than one frequency inverter.

  • Update and backup parameter settings.

  • Control and monitor frequency inverter using serial ports.

  • Use more than one serial port simultaneously.

  • Graphical monitoring of chosen parameters.

  • In-built keyboard simulator.

  • Support for MODBUS.

System requirements
Operating systems supported: Windows 7, Windows 10.

  • A RS232 (serial) port on the computer or a USB to serial port adapter.

  • Serial cable suitable for NFO Sinus. Available via NFO Drives AB or connect according to inverter manual.

  • Correctly connected cable.



NFO Sinus controls electric motors with pure sine wave power. It offers a range of different benefits that can be put to use in different ways in different applications:


Residential and business properties(HVAC)

Industry(HVAC and machines)

Agriculture and equestrian facilities(vacuum pumps, machines, etc.)

Warehouses and cold storage(HVAC)

Laboratory, testing and research facilities(HVAC)

Marine (HVAC)

Radio and TV studios (HVAC)

University and schools (HVAC)


Theatres and concert halls(HVAC and machines)

Waterworks and pumphouses(pumps)

OEM -integrating your own company’s products


Tubba Torg 5 

SE-37432 Karlshamn, Sweden

Upgrading the future.

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