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.

NFO Sinus frekvensomriktare

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:
Frekvenomiktare NFO

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 2.5A (7.5A in total), choose a 4.0 kW inverter with a continuous discharge current of 8.8 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.


Brochure NFO Sinus
NFO Sinus 3x400V 4-7,5kW IP54
NFO Sinus 3x400V 7,5-15kW IP20
Mechanical Dimensions 0,37-15kW
NFO PWM 3x400V 0,37-90kW
NFO PWM 3x400V 0,37-90kW (DE)
Product presentation PP
General Information
CE-marking - Declaration of Conformity 2017
CE-marking - Declaration of Conformity NFO Sinus Optimal 2,2kW
Checklist - Installation NFO Sinus
Pricelist NFO Sinus from 1/7 2022
Pricelist NFO Sinus from 1/4 2022
Pricelist NFO PWM


Manual NFO Sinus G2
Manual NFO Sinus Optimal
Quick installation guide NFO Sinus G2
Quick installation guide NFO Sinus Optimal
User´s Manual 400V, 3-phase 0,37-15 kw
Operating & Installation Manual NFO Sinus Optimal 2,2kW 
Supplement of manual 0,37kW-3kW
Modbus NFO Sinus G2
Modbus NFO Sinus Optimal
Modbus quickguide NFO Sinus G2
Modbus profinet quickguide NFO Sinus Optimal
Communication supplement
Modbus complete parameter table NFO Sinus Optimal
NFO PWM manuals
User´s Manual 400V, 3-phase 0,37-90 kw
Old manuals
0,37 – 15kW serie G2 ver. 3.4 fr.o.m. 2009-03-20
0,37 – 11kW ver. 2.8 gamla 1-fas – och 3-fas matade
0,37 – 15kW serie G2 ver. 3.3 fr.o.m. 2008-01-01
Fieldbus Interface Communication ver. 1.1
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
Serial Interface ver 5.0
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 system: Windows 10.

  • For NFO Sinus: RS232 serial port or USB to serial port adapter on your computer, and a custom serial cable for connection with the NFO Sinus. Serial cable is available from NFO Drives AB. Alternatively connect according to the NFO Sinus manual.

  • For NFO Sinus Optimal: USB port on your computer and a USB A/B cable. Change Sinus Manager default setting for communication from NFO Classic to Modbus RTU, in menu Options/Settings/Default COM Settings (se picture).

Program NFO Sinus
Sinus manager.png



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