Basic Motor Control: 3 wire Start Stop Circuit

#AccessToPower #MotorControl,
accesstopower.com
In this video, I demonstrate a 3 wire Start/Stop circuit. I describe each of the components involved, such as the motor starter, overload, start pushbutton, stop pushbutton, and control power and how they work. I then screencast a simulated circuit so you can visualize exactly what is happening in the Start-Stop Circuit. In the next episode in this series of video's, we will add multiple start-stop stations and demonstrate via the onscreen live simulated schematic how they work in the motor control circuit wiring.
Please See our updated video with more field wiring at goo.gl/ZMjDbD

[@ktoectbkto]

This is the best video I have ever seen with a thorough explanation of the circuit especially if you are a self learner as I am. Eleven minutes of this video equals to weeks of learning in schoool. Good job sir, keep those videos on rolling out!!!

[@heteroyenoushum3631]

Hi

[@Chris-kl5rw]

Yes an excellent video simple to understand!

[@mkhitarnazaryan1161]

I like it

[@garza1367]

6 weeks of motor controls class summed up in 11 minutes. Great, simple, effective content.

[@SmiTTyy-sh8nc]

"Latch circuit" That term helped me remember that using a N.O. Aux. contact keeps the circuit energized after pushed. Great explanation video !!

[@D.Hozzie]

Hey Walter. I have been “ one of those electricians “ for a long time. The MC aspect has kind of stopped me in my tracks quite often. I work for a zoo and so my duties as an electrician can vary greatly. Thank you for this and “ sparking” my interest with bettering myself. Good things!

[@SH-pc4xt]

Thanks so much for this video, and the entire series!! Just a hobbiest, but am installing CNC mill and manual lathe in home shop. Came to these videos based on VFD intro videos, stayed to watch these basic tutorials on motor control. Last year I had 2 electricians helping me to troubleshoot a 20 yo but "brand new, unused" 18" bandsaw. Couldn't get it to start even though all the switches seemed fine. I finally discovered that by manually closing the contractor, the motor would start, thus eliminating the motor as "the problem." I used a volt/ohm meter to verify that power was making it to the motor control inputs, and that the basic control switches were working as intended. I went so far as purchasing a replacement control unit from Amazon but then I was stuck. The second electrician was brought in at this point. He was able to diagnose the problem with the original motor control unit (from ~1988)--the primary relay coil had break somewhere so it would not energize. The contractor units have been standardized for decades, so the second electrician (the 'motor-control whisperer') as able to harvest the coil unit from the Amazon replacement and use it in place of the original unit. Everything just snapped together and now the unit operates properly with it's original control switches and front panel intact. While this was a great result I don't like to think about how much all that cost (lets just say a few hundred dollars). Having watched these intro videos on Motor Control and 3-wire start/stop circuit basics, I could now understand better how it was all working (or not working). Don't know that I would have figured out what the problem was, but at least I would have had a chance. Finally, I'm going to keep watching this series because, for example, I may want to add an additional stop switch to the bandsaw. The red momentary NC switch assemblies are readily available on Amazon. From these videos, I think I understand how to add more to make the machine safer to use with a more accessible STOP switch.

[@garysackrider529]

I've been doing electrical for 25 years and just now start doing motor controls and this really helped me out a lot thank you

[@tedkiser2626]

Absolutely the best and clearest description of a motor starter that I've seen. Thanks

[@mistertruth8001]

I wish all journeyman, foreman, instructors,... were like this guy. GOD BLESS THIS MAN!

[@AccessToPower]

Thanks for the great comments!

[@dtv1966]

Damn, where was this video when I took motor control. Excellent job.

[@shahshakib5234]

Where did you take Motor Control? any links?

[@dtv1966]

@@shahshakib5234 when I was an apprentice at the IBEW.

[@insteelitrust3537]

I am a me engineer. I started to watch your videos today and amused by quality and simplicity of the information that u share. Thank u very much for the hard work. U would be an amazing teacher.

[@denniscoates2827]

Great video. In water/wastewater industry. This type of online training is priceless. Thanks for the service!!

[@robertthomas3970]

Explanations clear, well demonstrated . Thanks for such an awesome video

[@Eric2Judd]

I watched quite a few contactor videos and this is the only one that clerifies how contactors work.

[@stevepatterson1994]

This is the best illustration for a basic motor starter. Thanks!

[@adamszajman3870]

the visual of the hardwired to diagram really helped, thanks.

[@bndwoodlands775]

Great job! First and only video I have seen where the narrator explains the seal in contact correctly, ie it is an auxiliary contact and not just some random normally open contact somewhere.

[@craigseib3578]

You’re an excellent teacher. Your thought pattern combined with great visuals really reach the audience especially those who learn differently. Thanks for the efforts.

[@AccessToPower]

craig seib thank you for the nice comment. I really appreciate it.

[@RR31982]

Clear, thorough explanation of basic start-stop MC circuit. Thank you

[@mistertruth8001]

I love this guy! What a cool demeanor he has and he's very informative.

[@saviourafia3198]

I really appreciate the way you explain the circuit. Thanks

[@davidrobertson3438]

Thanks, for taking time out to help us. Videos are great.

[@boxcutter0]

Thanks for the wonderful video! A presentation explaining how a relative novice can best cobble together misc budget/auction items together to form a versatile workstation would be monumental.

[@wimm1392]

Very good video to keep my rusty mind going. Thanks very much

[@craigrollinson3326]

These videos are brilliant thank you. Helped me a lot. Craig U.K

[@alfredminor1914]

Great job, you simplified it without over talking it... brilliant

[@jamiemendez137]

Great video very simple to understand best explanation I have seen

[@raymondsciara]

This is the best demonstration on motor controls I have seen.

[@TheWalbla20]

Thanks Chazz. I loved A Bronx Tale.

[@pmdiamond]

Excellent video. Thank you. Troubleshooting 3 phase 480v. I love it. Just today, had one phase open, after following conduit, found a bent 3\4 piece of EMT and a burn spot. Friday the guys changed a screen on the El Jay shaker, evidently when they dropped the screen over the side onto the ground they hit the conduit for the feed conveyor. So, overload tripped out from single phasing. Used a tubing cutter, on EMT and added a box a new seal tight. Reset overload and it's up and running again. Boys were clueless they even hit it.

[@AccessToPower]

Good job troubleshooting the motor today!

[@johnsavage7003]

Nicely said , Great Instructor , I would like to see more of your videos about motor controls. Thank You for the information , You Rock!

[@bobbygonzon5428]

Thank you for producing this video and for dropping knowledge bombs 💣 😎👍🏼

[@AccessToPower]

Your Welcome!

[@Al-Garsan]

Walter, thank you for creating these videos with explanations anyone can understand (even me!).

[@AccessToPower]

You’re welcome! Glad they are helpful

[@thokubina3055]

One of the best videos Ive seen on the explanation of this, especially for a refresher when you haven't been around it in a bit, thank you!

[@AccessToPower]

Thank you

[@prodson8310]

Thanks for the video. You use terms as if everyone knows exactly what you’re talking about. It is a great effort

[@guantai69]

Hey man, great video on motor control. Very good relation to anyone that has worked with relays or contacts in the field.

[@raminla2000]

Thanks, these Videos helped tremendously, I’ve worked on variety of Control Panels for Conveyor systems, And in my case had issues with actual loose contact wires that caused initial replacement of several components because, couldn’t determine actual cause of tripped breakers, also pitting and much carbon buildup that causes resistance buildup or arcing, loud explosive sound and smoking out of the Panels, at first thought was overloads because the high Current demands but turn out to be gap between contactors

[@marccharlot8896]

Thank you sir, for another excellent learning video

[@elc2k385]

I immediately shared this video with my classmates. It's a miracle of instruction. Thank you!

[@AccessToPower]

Thank you for sharing the video and taking the time to comment.

[@alexgarcia1445]

Good video he’s not boring

[@tinysand3517]

Thanks Walter, you made it seems so simple

[@gabrielabraham427]

Thank you for actually demonstrating

[@baddbrad4081]

Great explanation on how to actually understand how the circuit works, I work in a huge paper mill when I'm in the MCC room looking at this bucket my motor could be hundreds of feet away where the wires leaving the load side of the motor starter goes to a local disconnect first , then feed the motor for protection.

[@asoteico9528]

Great !!! Just starting with motor controls !!!

[@Automationacademytv]

Thanks for sharing your knowledge very informative, it inspired me to focus more making electrical video

[@philliplee7703]

I really enjoyed your video, it gave me a clear understanding of motor control circuit, but not only that, it gave me a clear understanding of how to correlate plc and line logic

[@yoosn911]

I have been self study PLC ladder programming & wiring a pump, this video explain everything so clearly, TQ hope to see more video with actual electrical circuit and its coresponding ladder programs

[@clavelarmandojesus4048]

The simplicity you explain make easy to understand. Thanks for such a great 👍 video

[@mag4657]

Excellent Video on three wire motor control systems. Very easy to understand with ladder diagram. Thanks

[@willardguillot1123]

I just started a job where I need to learn this stuff and I love my job. They are training me, but this video was as so much more helpful. Thanks can’t wait to see more.

[@malawigold747]

Thank u! You would be amazed, trade school teachers cannot simplify it like this, it's almost as if they dont know how it works!

[@mistertruth8001]

Man! I like your energy level, how well you communicate,... I seriously am intimidated by controls.

[@oongoken9594]

Need more of these please.

[@Steven-qs6wj]

Phenomenal video. Just need field wiring example.

[@annalynneirvine]

Yes pleassssse, field wiring example

[@vernonjones2115]

Many thanks Walter fabulous teacher 🇬🇧🇬🇧

[@GavinCasterMusic]

This is a great refresher video for plant engineers like myself, who work on many different building concerns, including building wiring, motor controls, and logic drive systems. Thanks.

[@AccessToPower]

Thank you very much!

[@stephendavis891]

Quality video well delivered - and kept simple 👍👍👍

[@brandonserna1177]

Great demonstration

[@eulaliorodriguez5325]

Thank you for sharing this great video.

[@valev5705]

The best of the best!!! Thank you señor!

[@amanuelberhanu6920]

This you making this video it is so simply clear. Geniuses make complex things look simple and understandable

[@user-fn9cs4dv8r]

sir, i work in power industry and this is one of the best videos out there, liked and subbed

[@abhijitnayak5445]

This is awesome. I just start watching your videos & I love it. I am sure this will help me in my career as electrical officer in merchant Navy.

[@jamesthomson5178]

thanks, great video. I'm just dipping my toes into this as I have an issue with a machine in the workshop and needs to be rewired so thank you. I think the hardest part is finding currently is what comments would work in my situations, I have a DOLD soft start and DC brake unit that I am trying to understand the wiring diagram of but some bits don't make sense, also do I put other breakers before it. thanks James

[@earlgrey1429]

I love your tutorial. Thank you.

[@slicksandiego]

This was a great video, thank you!!

[@dcoakley11]

Great video clearest explanation I’ve heard and seen thanks

[@gh2110]

We would love to see more like this one:

[@AccessToPower]

hello Linh, the software I used for this demo is called Constructor. here is a link to the info page. www.cmhsoftware.com/constructor.html

[@user-cs5zi9wq4t]

I'm happy to hear you Thanks lot

[@ActionMax09]

Awesome. 👏🏽 Thank You

[@papysongo1917]

I really appreciated and liked this video cause it gave me the basic instruction of how 3 wire start stop. I'd like to see more videos like the one multiple start and stop buttons.

[@top10trends59]

You are great teacher!!! Thank you so much and keep up the good work.

[@AccessToPower]

Here is the software I am using www.cmhsoftware.com/constructor.html

[@engineeringsolutionshud]

Nice to always teach on motors

[@nv7620]

One of the best videos. Thank you

[@olemcdonald5035]

Thank you for your very thorough explanation.

[@AccessToPower]

You are welcome!

[@gabrielyzamany6355]

fantastic video, I got a better understanding of motor control from your video ..than the electrical course I am doing at the moment. thanks for sharing

[@gazyoung8490]

that was brilliant , thank you .

[@Chris-kl5rw]

Awesome instruction keep the videos coming.

[@nickledimez4012]

Awesome video. Thank you

[@joelcardz1]

thanks for these videos God bless you.

[@ericweiden6232]

Excellent thanks for the clarification easy to understand what you're teaching other videos and I've watched a lot aren't as good as yours

[@rachelcarantes5658]

Great video, thanks

[@DavidTowns88]

Awesome video! Thank you.

[@AccessToPower]

Thank you!

[@jaimehernandez5791]

I really like this video, I want to see with a selector switch on-off-auto, two pilot light green and red, with the overload. You can explain it in the computer but also I wanna see how you wire all that.

[@jonathanbalderas6200]

Thank you for the knowledge sir

[@hassanhussaintv7248]

Thanks sir such a nice and very easy way to describe power and control circuit of electric motors.

[@sukhwinderkailey848]

very informative video, it cleared my holding contact question, Thanks

[@AccessToPower]

Glad it helped

[@user-fx5xj9bj6i]

Thank you for this

[@mediapeopledigital285]

Excellent job buddy!

[@selvakumarr6672]

Excellent learning. Keep sharing your knowledge..👍

[@philpascel4144]

Great video, thank you! I just wish there would have been a bit more blue in the introduction.

[@watchingyoutubeat]

i am not an electrician but i clearly understood the basic 3 wire electric motor system advantages . . .perfect presentation ,

[@NanaSewaa]

Thank you for this video

[@BariumCobaltNitrog3n]

I think once you see someone wire up the whole circuit, then do it yourself, you can really get a sense of how simple it is. I think VFD's are a lot easier to hook up and you get a ton more control. Centrifugal switches are another example of a simple latching switch that uses momentary buttons for start/stop like on a table saw.

[@nicolettesarubbi1400]

Currently preparing to take my license for engineering and this help so much. Thank you!

[@AccessToPower]

Glad you found the video useful!

[@franciscobaguhin5772]

clear presentation,,thank you

[@tracyhawley2740]

Keep them coming.

[@KIMKim-ql8zx]

Brilliant Contet. keep brining more. Thank you

[@robertpora6921]

This video is very helpful Thankyou

[@nathandoss5890]

Very good video, thank you.

[@Billdates7798]

Best video and we'll Explained. I loved it

[@anthonyesparsen7776]

Wow thank god for you cause I can wire 3 way and 4 way switching devices with out thinking about q

[@AccessToPower]

Thank you. And yes