Electromotor maintenance

It seems he want to collect data of the motors. As says, in order to achieve this, the company needs to buy sensors. Then, some routine can be write in the PLCs and retrieve the data into a SQL Server (All the fabricants work with MS).

Call me mad, but, maybe using Arduino can be a good idea.

Oh, didn't read this >lot of them end up with short circuit on the winding
It seems that you're either supplying too much voltage to the motors or you're putting too much load into the engine, if the tutor tries to rotate but there's too much load and can't freely rotate fast enough then it's going to use more current eventually overhearing the coils.
I also read somewhere that too little voltage results in the engine using more current to compensate thus overheating.

if the rotor tries to rotate*

Call me mad, but his job is totally unecessary, maintenance plans are used as a way to justify the job itself existing. The same or cheaper alternative to having a guy spending unecessary money to justify his job would be to replace as it burns out, send for refurbishment if possible or use the manufacturers warranty to get the equipment back in good condition.

If this is at a factory or anywhere where down time is not tolerable he will not ever be able to do preventative maintenance anyway. This is all a CYA, if you have the job, you supposedly have the education, why the fuck would you be on Jow Forums asking this anyways.

looks like a three phase Induction motor, just read the manual for whatever the fuck VFD you're using and make sure you know it and understand the error codes.

I also do a lot of operative work, things said here are known to me, its just that the company doesnt have any other companies outside of my country which are doing better, I was hoping for a response from some seniors, perhaps if you guys have some experience with ABB smart sensor and other trends surrounding industry 4.0

your use of buzzwords and want for a magical unrealistic solution middle management type reminds me of the place I work at. You are way over your head and you only have the job because you know the right person. If you can't perform maybe you should let someone who is better than you have the job.

I was given a chance, this is a junior position and I am only 20 yo, not that I know anyone, its just that I am good at pretending that I know what Im doing desu with you, but I am hoping to improve myself, not just pretend to know stuff

i was given a chance like that to, but i didnt come on Jow Forums to look for the answers, i went and looked at manuals, i talked with the people who did simialr jobs i talked with people who did the same thing but worked for the competition.

there are no magic pills in any industry, if there is something you cant understand truly it is because the answer is to hard for most to admit, most of the time the answer is because they're looking for reasons to justify their own job existing.

I am studying computer science on the weekend. Those are two seperate worlds, I would read the manual if I had a time, but having a partner, school and a job is making it hard, I dont have the right education, but I understand some of the practic stuff, yes you are right that I should dig more deeply, sorry for my buzzwording and stuff, I admit that I am not a expert at all, looking back, I don t know what I was hoping to find here, can I ask what are you doing right now? I dont ask in bad will, I am just curios how much you proved yourself

>predictive maintenance
best meme of 2018

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>ABB smart sensor
Are you using it? Which models?

I work on starter generators for aircraft, it's basically the same as what you do OP. What I do is provide predictive and preventive maintenance around starter generators... But I don't really know how to help you with your motor problem. Beats me, but best of luck!

OP wants to learn about the automation pyramid but doesn't know it yet, why not help to learn about it? Is it no 4th Industrial Revolution, but is important and useful.

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thanks

there are lot of algo for your jobs. It's an entire field in engineering. Check this book dl4a.org/uploads/pdf/ch01.pdf

Well we have only 3 generators on which we are doing maintenance in yearly period w/o problems

wrong link

this:

amazon.com/Statistical-Quality-Control-Douglas-Montgomery/dp/1118146816

asynchronous electromotors failure can be easily predictable. They are always following this order:
Increased heat >> increased vibrations >> strange noises >> smoke/flame/failure.usually you order new bearings when heat is present and change them once vibrations occurs. Mark usual temperatures and vibration levels when new, then watch over time. It takes years and thousands of hours to break down async elmot.

Hopefully top management comes to the same realization as we do

Happy to help user, as I said before, take a look to the PLC models and the IDE it use. That should allow you to know how to do that good stuff. If the company cannot afford to make it, you can at least investigate and create a report on the subject that you can present as a project of improvement. You can even post it in your Linkedin.

Just run temperature probes on all of them.

Weekly PM listening to them. Occasionally more thorough ones listening to them start up/shut off, under no load and under near max load, with more attention being given to newly installed ones and even more to older ones.

Electric Motors run for ages in hot and dirty environments, 24/7.

All these people saying vibration sensors lol.

>spending the time changing the bearings
>not just tossing the motor

Unless it's a larger motor or a unique one, most times just toss them. They last so long anyways. The time of paying a guy to pull the bearings and install new ones often exceeds the cost. Easy to change the bearings on smaller motor, but larger ones are an entirely different story/have to be sent out of shop.

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what do you mean by PM listening?

I started to monitor start/stops of critical motors also with temp measurement, now I am working on collecting the current torque if I know the torque of the roll and gear ratio, do you think that it will be usefull?

You are going way, way, way to deep into this to justify your job/existence. With all the torque mumbo jumbo.

PM. Preventative Maintenance. Your workers and your millwrights are your first set of eyes/ears. A motor near failure often will let you know it's on the way out with its song.

And if you're lucky enough you have a System in place(SCADA whatever) that records data/throws alarm have it setup to monitor temperature. And you can go through logs.

Track Load and Temp.

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What exactly are these motors doing and what kind of environment are they in? Are they turning pumps? Are they using gearboxes? Are they working in hot environments? I've been a tech for 20 years, if you provide more details I may be able to offer some advice.

reminds me of when management decided to refurbish instead of replacing, they send the equipment out, spend literally double what costs for a new one, equipment comes back looking like shit and needing replacement within a year or two of operation.

>Weekly PM listening to them

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I recommend starting from ground up, you really cant cut corners in electronics

>Use liberal amounts of oil and read the manual

this is wrong. motors are more likely to be killed from over-lubrication than under.

OP, I think LLNL wrote an article a couple years back about a new predictive maintenance system they had developed or adopted.

This looks very British. Not a compliment.

>do you guys have any tips to keep my job pls
linear regression and call it machine learning

SATAN IS THAT YOU

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Oh shit, I didn't notice!
LOOK MOM, I GOT QUITNTS!!

1) learn how to read the fucking wiring diagram
2) program the VFD (variable frequency drive which I assume you are talking about) correctly according to what it says on the manual or nameplate.

If the motors are not vfd rated, use vfd rated motors. If you can't do that, there are some very expensive output filters you can buy. An output reactor might help.

vfd rated motors are a meme in my humble experience. you just have to make sure you have enough air flow at the current power level for sustained use.