Learning Center

What is a Variable Frequency Drive (Video)?

By Yin on 19th Jun 2014

Video TranscriptToday we are going to talk about what is a VFD.In the 1880s, we saw the introduction of three-phase AC power. This was a marvelous invention by the great scientist Nikola Tesla. And running on that thre …

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What is a Line Reactor?

By Yin on 12th Jun 2014

A line reactor (also referred to as a "choke") is a variable frequency drive (VFD) accessory that consists of a coil of wire that forms a magnetic field as current flows through it. This magnetic field limits the rate of rise of t …

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How to Read a Motor Nameplate

By Paul Rossiter on 20th Mar 2014

Below is a sample nameplate. You can click on the links in the nameplate to learn more. CT:VT: MODEL NO./SERIAL NO. HZ LOW VOLTAGE …

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How to Perform Basic VFD Programming (Video)

By Craig Hartman on 20th Mar 2014

Video TranscriptIn this segment we are going to show you how to use the basic 7 parameters to set up the Mitsubishi FR-PU07-01 advanced parameter keypad.As you look at the top row of this keypad there is the “PRSet” ("PrSET" …

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How to Connect a Speed Potentiometer to a VFD (Video)

By Tyler Simmons on 20th Mar 2014

Video TranscriptI’ve got an F700 Mitsubishi here and I am going to show you how to hook up the speed potentiometer – or the speed pot. The camera here is going to show you the two screws on most of the small sizes of drives. …

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Bearing Currents

By Craig Hartman on 20th Mar 2014

Courtesy AegisMotor bearings have a higher failure rate when the motor is run with a VFD. This is due to currents in the motor bearings. The classic solution to this problem is insulated bearings. Insulated bearings insulate the b …

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