Wow! Absolutely amazing, fabulous!!!. This is how you explain the concepts -- clear cut, right to the point, no beating around the bush, etc. I wish others watch this video and learn how to make educational videos..

I used to repair mitsi drives for a living...many moons ago when vf control was the defacto. This guy is exactly right in his explanation. If I could add a couple of points: 1. Smell the drive.....if it has a "burnt" smell then its usually the power section and chopper section blown. You can sometimes see the power device sidewall blown out, exposing some white smoky looking gel...maybe this has changed on the newer devices. 2. A faulty drive has a certain squeaky sound....unfortunately that a difficult one to explain I could diagnose a faulty drive just by the way it sounded..it was usually the capacitors on the chopper boards. Mitsubishi used to pull the gate signal slightly negative to switch the power devices off. I doubt I could hear a faulty drive now and the newer power devices are much better at switching on and off. Anyway, that was many moons ago my exposure to industrial drives is now a button/parameter checking thing and this in its own right can be the difficult thing you have to find the right parameter but the fundamental principles stay the same But to the good gentleman explaining this video you are spot on.

Makes the job so much easier if, for example, the vfd reads a ground fault present. It allows you to make straight to that 3 phase motor and it's wiring,. Easy continuity testing. Such a help!

The way to solve problem is so simple, the complicated is the detail of parameters of each brand, How many brands in the market may be 100 brands

Also, when you shut down a VFD, you should wait at least 10 minutes as most of them hold a charge that will dissipate through a resistor. If you go touching things right away because you have opened the disconnect, you could do the electron boogie for a few seconds. And that's worse than the chicken dance...

Craig, I know the drive is not powered up, but watching you touch the U, V, W busses makes me jump. Haha! Great video.

Very much appreciated. Covered a bunch of info in a short time. Thanks

Now you made me smarter ...thank you

While the motor was disconnected and the drive was off you can also check the gates on the IGBTs with your meter on diode check, you can check the capacitors across the buses somewhat, you could also check the MOVs and the rectifier with a diode check as well.

VFD Repair - Industrial Solutions Authority, Hamilton Ohio, USA - Best turnaround time in the industry. Be sure to tell them Rich sent ya.

this is a great presentation thanks, for all the info, made me a smarter person.

Maybe you can describe how to check the rectifier bridge, if the SCRs are shorted and the capacitor in the next video. Also, before powering on the drive, you should always ohm the input terminals if they are shorted. Those are main causes of drive failure.

Great effort and professional explanation Thank you sir

Nice little video with great tips, thank you!

Thank you for your explain. i have a question . pls . a VFD can work with the dc source. if so can you give us clarificatons thank you .

Hey great video! Knew a lot of this before hand, but it was a great wrap up of a lot of basic issues. Any chance you have a video on VFD motor protection programming?

How can a normal vfd be able to put power back into the grid? It can't because normally on the utillity side of the DC bus is no inverter to do so. But if the motor feeds into the drive You could have a break resisor or DC break. Otherwise the drive will trip and let the motor free run

Good explanation thank you

Great educational video man.

Excellent video!

Good stuff. Thanks for sharing.

It very good explanation I enjoy it very much.

nice info sr

Do these drives have fuses? I have a drive that doesn’t even power on

Sir your explanation is simply great. .God bless you.

Thanks sir for this information.

Can you explain why the power supply may be overvolting at night? I missed this concept somehow

Thank you Sir

AN FR-A700 INVERTER HAS DEVELOPED A PROBLEM OF ONLY RUNNING IN ONE DIRECTION(FORWARD) BUT PREVIOUSLY IT WAS RUNNING IN BOTH DIRECTIONS AND I HAVE CHECKED THAT THERE IS NO SIGNAL FROM THE INVERTER(AT RUN TERMINAL) GOING TO THE PLC .WHAT CAN BE THE PROBLEM.QUICK RESPONSE WILL BE HIGHLY APPRECIATED

Great Profesional explanation!!

I was kinda scared when you started touching the power cables. I could hear a buzzing so was thinking it was powered up

Hi, I like your lecture. Thanks

On a mitsubishi inverter, 9999 in a parameter means it's set to dataplate ratings by default. Setting a 'real' value in there is usually a precursor to sensorless flux vector mode. Setting these away from 9999 must be followed by a flux vector autotune

Sounds great

Very Educational

THANK YOU SIR,,i have a problem with VFD is not working and the MCCB is burned ,,so what could be the causes of this issue?

I HAVE REPLACED AN FR-A700 WITH AN FR-A800 AND ENTERED THE SAME PARAMETERS THAT WAS IN A FAULT A700 INVERTER BUT THE DRIVE IS NOT WORKING.WHY?

The mergency stop signal🤔???

What if the VFD shows its running but there is no power coming out from the output phases. even though the VFD shows running . But when checked with a multimeter the VFD output to the motor itself has no power coming out of each phase..

Thank you sir, good and to the point information

Great video

Hi good morning I'm starting with vfd what book you recommend me

I put a dimmer switch on my ceiling fan. Po mans vfd

Good explanation

R= L1 S= L2 T= L3 N= Negative for DC Bus P= Positive for DC Bus P= ? U= T1 V= T2 W= T3 Would someone please explain to me what the second P stands for because Craig didn’t go over it. I would greatly appreciate it.

Running motor suddenly stop Vfd Display show, Err F 1301, what's the problem? Please tell me.

Great info! Thank you

3 phase motor don’t run, VFD display show ‌`fault` and E l l, what's the problem?

great thanks sir.

Thanks guys

My Mitsubishi vfd goes back to default setting if I turn the power off to the vfd. Is that normal???

What is the best oscilloscope for troubleshooting a vfd?

Have an old Toshiba g2+. OC3 fault. No motor attached, still can't clear the fault?

Great info

Do these work well with a 480 3phase generator?

My VCU john zink turn off and gives me a code vfd 101 communication failure

how can i reset a allen bradley 1336 plus to factory settings?

How to trouble shoot cfw-11 vsd

Who knew Donald trump was this good at troubleshooting VFDs

hey man you are the best

where can I find water-cooled VFDs?

HOW TO TROUBLESHOOT COUNT OLAF

pleae help meguys > i have mishubish A700 vfd but when i start it it only runs for 10 minutes then it trips, the it dispalys the OP3 ALARM , what could be the problem and what could be the cause

before vfd run Earth nutral viltage 1V, after vfd run Earth to nutral voltage 14/15 Volt-i need to solution please explain.we give Earth connection properly VFD to Motor. we use SUBMERSIBLE MOTOR.

Great Thanks!

Dear sir vfd frequency going to low in auto mode what case this?

awesome sir thank yoi

helo sir , i had a question 90 kw motor is controlled by danfoss vtl 6000 drive . when ever i check load of motor it is not constant some times it show 10amps and some time 50 amps. it showing variable load what should i do please help..

thank you

Why is this controller solarge for a 350hp motor, in the mean time , the controller for the Tesla Model s motor is tiny and light weight compare to this?

Please give me a Solution, Do you know how to fix ac drive problem, UVW unbalance output Voltage? U-V Voltage 7% less, compared to U-W & V-W Voltage

Bruh I came here from a series of unfortunate events 😂

Thanks sir

Hello Red River Electricians

I know Donald Trump's uncle was a physicist and all that but I didn't expect to see the Don giving a VFD troubleshooting overview for a random vid like this lol.

Great video sir. Can you do a video on Siemens VFD drives? I have been running into issues on theses. Thank you

How to loading cell?

Sir , for a 60Hz rated motor ,how much we can increase the frequncy ...? Plz help

thanx ..sir ...............

Hie can i run a say 1.5 kw 3phase motor with a petrol gen single phase using vfd? Anybody plz

F70800???

Not load power pault

What is a fault overload?

❤

👍👍

5:09

Hello

Great video. Thanks a lot. This man looks a little like Ex. Prez Trump haha

😐

Cc

I need a professional lol

Thanks Mr Donald Trump

Great info

VFD is not giving any output voltage. It seems that everything is OK with the wiring and the program but still I cannot get any output voltage. What can be the reason for this?