Mazak Spindle Problems

[@ehamster]

So glad you checked for voltage at the contractor terminals before diving in. Variable speed drives have large capacitors that can deliver a fatal shock even after the power has been disconnected.

[@Eggsr2bcrushed]

Looks like the bleeder resistors did their job, but indeed always a good idea to check.

[@bigjd2k]

The tiny 1HP drive I put on my small lathe says wait 5 minutes from isolating power before touching anything, looks like some drives bleed stored energy faster than others!

[@brianmckenzie1739]

Learnt a lot, thanks. But what really amazes, is that Peter can work so calmly, ensuring camera angles are capturing the right stuff, whilst undertaking work, or repairs that could go so easily and expensively wrong. It takes a special effort to pause before any heat-of-the-moment action, to start recording a video of what's about to take place.

[@Tomanista]

My experience is that most of Mazaks machines are enabled for automatic power on and power off, usually in a schedule so you can have it on before you get to work and have it turning off after you leave (even if the machine doesn't come with that feature, it's prepared for it) . That's why most of them has "redundancy" power in the motors and relays. They are also very picky about how you turn them off. For instance, using emergency stop before turning it of is not something I've been told to do. I just make the machine go home to it's zero point, and then turn it off. The Mazak I work with now has a pallet system (MPC) that is controlled by a PC that has a UPS connected and it's really picky about which order you turn things on.

[@bluedeath996]

I'm glad you tested the power. Too many people just take it for granted that the switch is off so the power must be.

[@jwharvey7167]

Ever since the day I started working on Mazak's 30 years ago, I have always turned the power off at the isolater. Don't know if that helped but I have not seen this sort of problem before. Still a good show of problem solving and how things work in the black box parts of the machine.

[@extradimension7356]

That's a really cool video, you really feel like you are THERE ! Almost VR / real time fix. @27:00 "Eleven thousand dollar smoke test" (that's too funny). Was cool with the roving/rogue mic seeing the relays on the back of the machine do it's thing while you are at the control. Awesome fix ! The Mits control backside looks well engineered! Cool .

[@jesscneal]

I wonder how many miles of wire are in that machine. Amazing technology. Glad you got it fixed Peter.

[@ActiveAtom]

Smart share here, you were very concerned in your home machine shop discussing this issue at that time Peter. Smart tip taking pictures we think with your phone, so you can have another set of eyes to reference during this switch-out of the relay. NO SMOKE IS GOOD lol. Nice new relay and a power supply and a concern and some work later you have this GREAT machine up and running parts again. Great job sir you sure look a lot happier (we hear it in your voice) then in your last video we are happy for you here too. Lance & Patrick.

[@EdgePrecision]

Thanks Lance and Patrick!

[@63256325N]

I had no idea that machine is the size of a four car garage. Wow. 😁 Running 24/7 would more than likely shorten electronics life spans. Thanks for the video.

[@jimsvideos7201]

I know the magic smoke is never cheap, but good gravy o.O

[@HH-Machining]

That machine is huge! My 1987 Deckel FP4A wont completely shut down until i Turn main power switch off. Thanks for the video!

[@brianu2871]

Glad you are up and running ! The CNC machine repair nightmare.

[@EdgePrecision]

It wasn’t to hard to repair. But it was costly.

[@jackflash6377]

I live in North Houston and I've been an industrial electronics tech for countless years. Retired and opened a small machine shop. I have extensive experience in automation, motor control, VFD, SCR controls. I was always very good at troubleshooting. Could have come by and helped you troubleshoot the problem.

[@gwharton68]

Great fix it job. From the looks of the cooling fans on the back of the power supply being all covered with grease and link, I think I would plan another sit down session and remove and clean up the other power supply.Those fans get nice and dirty and they won't cool the electronics right. Heat is the enemy of electronics. Liked the way you used your phone to record all the wire connections.

[@Toolman22364]

I know the feeling, not 11k but 2500 for a motor control on my Tree 425 J . I dread having to open the control cabinet. It always mean money . Glad all worked out for you .👍👍👍

[@EdgePrecision]

Thanks misery enjoys company.

[@zephyrold2478]

@@EdgePrecision I second that.

[@Donkusdelux]

Oh wow, first person I have met with a journeyman Tree :) We have an old j350 in our shop. very rarely gets used anymore. Pretty cool mill, tilt head with a 4th axis.

[@Christian-ti7wh]

If the main power switch is just energizing a contactor you could put another switch in series with it and run a wire around the machine to your control panel. Then you can turn the main power on and off comfortably. If it is a mechanical switch, you could install a contactor in the main input line and run a switch to your control board as well. Turning off power electronics is always a good idea. Components not only die from high loads or high temperature but also from ripple and charge currents, vibration, power surges... If you know a !good! electronics repair shop, or if you know someone that really knows what he is doing I would have them check out the power supply. Maybe it is as simple as a dried up capacitor, a broken connection or solder point. If it is a complicated fault or they cannot figure it out you can still send it back to Mitsubishi, otherwise you have a spare. Thanks for sharing this video. I really enjoy seeing the inside of these machines. When I was young I did work on stuff like that from time to time, but during the last 20 years my work got smaller and smaller and nowadays I am happy if I don't need a microscope.

[@Jimmeh_B]

personally, I would attempt to fix that PSU myself. Behind the large heatsinks on the back of it will be 3 big SCR's or IGBT's. I'd be removing the heatsinks, finding the data sheets on the components and testing them first. After that (and more likely) it's going to be a fault in the low voltage SMPS. which will most likely be due do either dried up capacitors or blown mosfets that drive the transformer. Part cost of repair will likely be under ten dollars. Unless one of the IGBT's is dead, one of them might set you back 2 or 3 hundred. $11,000 for that unit is an insane amount of money. I fail to see how they can justify that kind of pricing.

[@scrout]

There is no justification, they just have you by the balls.

[@WatchWesWork]

It's almost always the IGBT modules that fail. Likely this one was on the incoming rectifier section. I would not be surprised if they are $1000 each. $11,000 is the cost for a new unit. I would guess a rebuild is in the $4,000 range.

[@weldmachine]

I guess it comes down to time available. You can fix anything if you have the time available ? But that is the big ? Do you have the time. Best to get things running again asap. And just get back to doing what you do so well. And pay someone else to do what they do a so well.

[@Ujeb08]

good job on the repair Peter. A couple of things that might help you in the future; (1) when you have a component problem that you can not isolate but you have a duplicate (such as that contactor you replaced), you can swap them to diagnose. if the problem follows the second duplicate contactor, then the problem is that contactor. (2) The enemy of all electronic components is heat build up. That cabinet is packed with many heat sources such as the power supplies for example. I did not see alot of fans inside the cabinet to remove the heat generated. there are probably fans at the top of the cabinet that may have accumulated dust and gunk. you should clean the grilles periodically to ensure maximum heat removal. good luck and thanks for sharing.

[@EdgePrecision]

Yes you are correct. The oil mist in the air (You don't notice it but it's there) is a real problem for the cooling systems on machine tools. There are some filter materials on this machine but they (for this cabinet) are hard to access and don't really do much good. Also this gives a lot of trouble to the air conditioning system in the building. Witch also aggravates the heat buildup in this machine. There is the turning spindles oil chiller that gives me trouble if the temperature in the shop gets to high. On a hot day and it is always hot in Houston Texas.

[@fredrezfield1629]

i replaced a battery on my spindle servo driver and then i lost home position in B axis ! ever encountered a problem like that? i seem to be having a PLC issue i can't home i can't run anything i can't do tool change i can't manually do a tool change through ATC recover it's very bizarre

[@siliconmcleod]

Hi Peter. I really enjoy your videos, thank you. It may or may not be worth your time but some companies sell the coils and contacts for the contactors, you might be able to rebuild the bad one and have a spare sitting on the shelf for the next time. It looked to me that it may have been replaced before. The components in the power supply that are in the heat shrink are most likely MOVs. They usually split open when they fail but can explode when hit with a large surge. The heat shrink is there to absorb some of the energy if they explode or keep the mess controlled if they split.

[@EdgePrecision]

The new relay wasn't that expensive. So spending time to find a replacement coil wasn't really worth it to me. Besides a new relay has new contacts also.

[@billdlv]

Glad you got it repaired Peter. I guess the nice thing about DC motors is that they have very flat torque curves throughout their RPM range. Bad thing is they require PWM controllers to do this efficiently and those have components like IGBTs and capacitors that can fail over time. I think Wes Johnson has done a few troubleshooting / repair videos on those.

[@fredflintstone8048]

It's a tough call. Notice that lightbulbs usually fail when you turn them on. In all electrical systems are are issues with electrical inrush, and also fields collapsing when turning things off that put stress on electrical components. It's true that the overall time power is applied to devices is lowered by turning things off often, but then there is the stress put in the systems by powering them on and off.

[@moritzrank01]

Just a little tip as an electrician: before touching any wires check them with a dedicated voltage tester or if you dont have on a multimeter(just make sure its on the right setting), because even tough you turned off the main switch, you dont know how the machine is wired internally, gives you some extra ensurance. And electricity is a weird kind of pain that will easily kill you if youre not careful.

[@Horus9339]

I winced every time Peter but his hand in, I worked on a CRT monitor once and was not focusing and had a shock that made me fully aware how just a small momentary lapse of time can lead to a cracking pain for a few days. Never did it again and went back to how I was trained, my electronics lecturer Mr Wildgoose told us all 'If you want to live a long and fruitful life as an electrician be a wanker!' - he meant when messing with dangerous electronics makes sure you keep one hand in your pocket playing with the families. It works 99% of the time - Never put your hands into confined spaces especially when you know there are caps in there. 'The volts jolts, the mills kills' - Mr Wildgoose, 1980's great Man, fantastic lecturer.

[@kisspeteristvan]

The fans looked pretty bad , maybe heat was a factor too ... . I'm glad it works . It was not that cheap , but not that crazy expensinve considering the machine . Only one thing is for certain . I don't trust any soft switches . I always turn off the main switch , even on home appliances if i can . Very nice footage by the way , i know you don't like maintenance , but i love it when you post interesting stuff about the machines :D .

[@FreeOfFantasy]

The important bit here is not that it switches from delta to Y config but that it's a Dahlander pole changing motor . In the Y configuration it halves the number of poles thous doubles the rpm for a given frequency. Delta-Y switching in general doesn't changes rpm but changes resistance and torque and may reduce inrush current I you don't have an VFD.

[@weldmachine]

Funny Smoke Test, lol. You normally won't see any smoke just a sort loud click. Then after that. You start counting the 1000 dollar bills coming out of your pocket ???? LOL. I am surprised that tech left the part there for you change yourself. In our part the world electrical work of any kind must be done by licensed Tradesman / Tech's. Even though most of us try to be temporary electricians. I am surprised that you did leave the power switched on overnight as this keeps the main electrical system active. The buttons on the controller only turn on the brains of the machine. The way the electrical work is set up is very normal for most machines. As you know now the coil burnt out because it was always active or powered up. I am guessing the same reason the power supply burnt out because it was always on. But as you know. We live and we learn. It was good of you to bring us back for this video. I still LOVE the Mazaks. They give you money back for your power supply because they will rebuild it and sell it to someone else for 4 Times the price they pay you for it. This is Not just Mazak all the manufacturers do this. Thanks again for the video. All the best. Peter.

[@EdgePrecision]

No the tec just told me what was needed and what part to order. He did nothing else. I called Mitsubishi Electric (not Mazak) and ordered the part. When it arrived I installed it. This is the state of Texas. I don’t have to hire anyone to work on my piece of equipment. When I bought this supply I asked if they had a recondition supply. They didn’t have one. But if they did they will sell it at a reduced cost compared to new. I want to say it isn’t Mazak. All Mazaks (after the Fanuc control ones) have Mitsubishi Meldas controls with their control over that. When you buy parts for a machine out of warranty. You buy them from Mitsubishi Electric. Unless it’s a very old Mazak with a Fanuc control.

[@weldmachine]

@@EdgePrecision Hey Peter. I am fairly up to date on Mazak controller systems. The only part I did not know about is ? That you purchased the power supply direct. I am not sure why it is each time I comment you seem to feel I am attacking you.? Maybe it's a KZbin thing. That wares out your patience.? You have watched my channel before and have a good idea that I tackle a lot of different task. I only mentioned that we need to follow our legal electrical requirements in our country. It's not to say we don't do our own work. We are very regulated by services such as Electrical and Plumbing. Mostly this is not to protect yourself but protect others from your work. It.s a nice feeling walking back to the controller and seeing NO alarms. From what you said towards the end of the video sounds like you are getting close to the next stage in your life. Thanks for your reply. All the best. Peter.

[@EdgePrecision]

No you misunderstand I have no problem with you or what you said. Its just the thought of governmental control of things. It irritates me. I think in this world people should be allowed to make mistakes on their own stuff. If it impinges on the public's safety OK.

[@weldmachine]

@@EdgePrecision Hey Peter. We are of the old world of doing things ourselves. I do understand your annoyance at government control. Normally regulations are drawn up to stop the same thing from happening again. We have had a free hand to do what we want for many years. But it,s the people who do the wrong thing that make everyone else,s life more difficult.???? Starting from the basics in a machine shop environment. Guarding of machinery is one. Now it,s a case of protecting people from themselves ?? I guess it comes from the over dumming of people in general. We are Not even allowed to use a ladder to work from at the risk of falling off ???? It has just got out of control. Safety is one thing but now it,s over-safety ?????? Equipment Hire business are very busy because we need to either buy or hire all this safety equipment to protect from the stupid people not using there brains when working. It was good being able to take a look inside the control area of your machine. They,re still fairly basic, But expensive components. The joys of CNC equipment. Make us a lot of money. Cost us a lot of money. Thanks for the video. And your reply. All the best. Peter.

[@mattm7535]

Great video Peter. Leaving the camera on the relay while you powered the spindle to show the error... awesome. The complexity of these machines is impressive. I did get a little nervous when you were poking and pointing at capacitors with a uninsulated screwdriver. I do find it very strange that the power supply failed on power-up after you replaced the contactor. I wonder if you can find out what part of the power supply failed. Edit: What kind of warranty do you get for $9k?

[@EdgePrecision]

Actually when I replaced the power supply it was the next day. So there hadn’t been any power to it for at least 20 hours. So the capacitors would have been discharged by than. But I did check for voltage. Also in the video the screw driver was farther away than it appeared and I wasn’t touching the metal shank. Believe me been there done that. I doubt weather I will ever know what went wrong with the old supply. Mitsubishi doesn’t tell you.

[@mattm7535]

@@EdgePrecision That makes me feel better, capacitors do hurt. Have you thought about reaching out to any other creators that specialize in electronics repair? Maybe get a discounted repair? Louis Rossman has a channel dedicated to electronics repair and loves to fix equipment for fractions of the cost that the manufacturer charges. He's a huge supporter of the "right to repair" movement. I understand you've been super busy and might not have the time, but it may be worth it considering the costs involved.

[@PSUQDPICHQIEIWC]

I doubt most hobbyists or consumer product repair techs like Louis are going to have familiarity with large drives like this. Direct replacements for IGBTs or modules may be difficult to find/identify for someone unfamiliar, and determining an appropriate replacement when an exact part match is unavailable takes the aforementioned insight into the application requirements. They're also not exactly cheap -- maybe not $11k dollars, but maybe a few hundred, depending. There's a bit of a difference between this drive and consumer products. On one hand, you have high-power industrial systems made in relatively small numbers, and where component failure can be dangerous and extremely expensive -- on the other hand, you have Apple (and others) taking various measures to enforce an artificially lowered average product lifespan in order to ensure predictable sales. One of these cases warrants caution; the other deserves contempt and should invite avoidance.

[@mattm7535]

@@PSUQDPICHQIEIWC I don't know enough about the drive/power supply or it's components to say you're wrong. I'm not sure if it could even be repaired.. or if Peter had that option through ME or the option to buy a rebuilt replacement for a lesser cost. I do know that 11k is a lot of money to spend on what may be a defective product, especially if it's your only option. If it only took Peter a day or two to get a replacement, they're not in short supply. You can purchase a 100kVA transformer (2000lbs) for a few thousand dollars, so just because a product deals with "high power" and is extremely dangerous in failure doesn't mean it needs to cost an arm and a leg.

[@ke6gwf]

@@mattm7535 I can repair a lot of things, but with something that complex, and that can cause loss of a several thousand dollar piece of stock if it fails during an operation, not to mention machine down time or damage if the PSU fails badly, I would not trust it to anyone who is not experienced at that type of technology. It's just not worth it, and most of the KZbin repair guys are hacks when it comes to this level of equipment...

[@jonusjonus9271]

that control cabinet is designed just like the robot control cabinets I work on. The heatsink goes through the back of the cabinet into a seperate compartment with fans that is sealed off from where the main electrical components are. btw I have a bins and bins of those contactors if you dont mind used components. I just can't bring myself to throw them away.

[@VKRenato]

Excellent video, as always! BTW. You can check that relay, before you replacing. Then you are sure it's relay. Especially if you have same relay to compare. You can measure resistance on coil and compare, then check if coil even get that signal to engage relay. That's how Mazak is wired is completely normal, every machine is wired like that. You should switch-off Main switch every time when you are doing something.

[@EdgePrecision]

I did check. The coil is bad in the old relay. The new relay worked fine.

[@VKRenato]

@@EdgePrecision Great job. It's smart to switch off Main switch and close air pressure valve every time, I am doing that all the time. With air pressure, I am not sure with Mazak, I have Hermle c30u.

[@captcarlos]

Nice machine, I'm sure you try to do the best procedure.

[@Tezza120]

oh man. This video is 3 years old now and you're still making videos so I guess you did ok. TBH I would of did the same thing but later in life did sparky work and then learnt about how to stay alive and it comes down to, you don't know what you don't know. How did know you the lead on your meter was ok when you measured dead? How did you know the bleed resistor was working that discharged the capacitors before you poked in there with a screwdriver? These are things you learn in life and hopefully they aren't too dangerous experiences when you learn them. Glad you're still making videos - I do learn a lot from you.

[@EdgePrecision]

Your getting a little bit of a misconception in this video of time. I made the video clips of looking into the power supply much later then the clips of changing it in the machine. So the capacitors were fully discharged by then. And although I didn't show in the video I even checked that that was so before taking the covers off the supply. So yes I was aware of the danger of charged capacitors.

[@jasonford8831]

I’m not sure if you have auto power shut off on your machine but on the integrex I used to run I used to turn the auto off on on the controller then MDI a M30 and walk out the door. The machine will power down the controller then trip the main breaker as I’m walking out the door.

[@itsnotfar]

If you read comments? I'm hoping you could show us your gopro setup. Wireless mic, how you edit, etc. This would be interesting to not only machinist but other youtubers/vlogers who film in similar conditions. I seen your air knife and thats a great idea for keeping coolant off the lens. Will be making a similar one soon. You inspired me to do machinist videos too.

[@EdgePrecision]

I have a few more ideas in the air knife/case. If you are getting a GoPro. Don’t get any newer than a 7black. The 8 doesn’t change the front lens cover if you damage it and the 10 doesn’t let you monitor video over wifi while your recording.

[@itsnotfar]

Thanks for the reply back. I've enjoyed your videos for years and look forward to new ones.

[@Kizmox]

Nice work. You should replace the another spindle contactor as well even though it is working for now.

[@EdgePrecision]

That may not be a bad idea.

[@Kizmox]

@@EdgePrecision Yep, cost of another contactor is nothing compared to unwanted downtime. Those concators should get about equal amount of cycles so the other one may not be far from dead. I have seen this plenty of times in milling machines.

[@fredrezfield1629]

@@Kizmox do you know mitsuibishi drives? MRJ2?

[@endemiller5463]

Nice job Peter. Love the ABOM shirt too!

[@mikemarriam]

Was the contactor bad or was it the power supply all along making it look bad? Did you lose money while this thing was down?

[@EdgePrecision]

No I was able to do some work on my other machines while the Mazak was down. I think because I never turned the main power of for a long time. That when I did to change the relay that in power supply failed something failed on power up.

[@Some_Beach]

That's a big relay! I at first thought it was a PID issue or something, I'm not too well versed in CNC though

[@actorzone856]

just wondering does Mazak have a technicians manual which has flow charts for each circuit operation so you can work out how to fix faults or point you in the right direction.

[@keithspainhour9067]

Just a wild guess, but I would suspect the fans on the old power supply if the supply monitors the fan rotation. Just guessing from the dirt/oil contamination that looks to be on them. Any idea what the error codes would be on the display of the power supply?

[@EdgePrecision]

The guy I had come check it out would know that. He is very good. In fact better than Mazak. He checked all the error codes and even called Mitsubishi. You did know all Mazaks have a Mitsubishi Meldas control. It even says that in the spec sheets they put in the control cabinet.

[@dietermeyer9231]

Fans on this power-supply isn't monitored at all. That function came on the Matrix.

[@mannycalavera121]

Awesome vids as always. Exchange the old power supply? Usually its a capicator or solder needing reflow these old power supplies. Might be fixable yourself

[@runejakobsen9958]

And then you must take it out, so the machine have down-time without any production, search for the defective component, find a replacement-component, replace the component and install it. And what can happen then? It might still not work and then it is the same all over again. Or you could take it out of the machine and have some down-time, send it to an electronic-repair shop, wait a few days (or more), get it back, install it and still not work. Mitsubishi tests these units before they leave from Mitsubishi.

[@mannycalavera121]

@@runejakobsen9958 you're talking hours of downtime, not days. It will be far longer for mitsubiti to send you a new unit then to do a simple diagnosis of the supply. Further more you even mention a component level repair shop working on the supply, what do you think mitsubiti do refurbishing these drives?

[@TheDestroyer1250]

I am currently fixing a similar issue with my older Fanuc lathe. I can turn the machine on and run it, but anything over around 1500-2000rpm, machine throws an error and says power supply has an overcurrent. I have a power supply pulled out. Those are contactors that you replaced in the beginning. Mine was making a buzzing sound so first thing I did was replace the contactor with no success. Going to replace IGBT's in the power supply.

[@weldmachine]

You mentioned the right word OLD ? Old electrics have never ending problems. That is why so many just give up and buy a new machine, lol. Great place to start with older machines is freshing up the electrics.. Sounds like you are heading in the right direction. Wish you all the best with the changes. Regards Peter

[@TheDestroyer1250]

@@weldmachine Big problem with going refurb electronics is they usually won't last more than a year or two without another failure of some kind. Hard to justify new parts in a 20 year old machine that cost as much as the value of the machine.

[@weldmachine]

@@TheDestroyer1250 Hey Preston. It's true what you say. I guess it comes down to how much work you put through the machine. I would like to buy a brand new machine. ( for my ego ) I am not saying I have money laying around. But I could afford to buy a brand new machine with out to much trouble. But and it's a BIG But ?? How much are you going to make ? From this latest purchase. I am rebuilding an old Mazak QT from the 90s. Why because that is what I can justify buying. I do not want to be stuck running a CNC machine all day. I will make the parts I need then shut the machine off for maybe a few weeks or even months. Depending parts I need. Of course that will be different for different people. I try not to be to dependent on CNC machines to tun my business. But I do understand where you are coming from. Talk to you again soon. Peter .

[@micahhunter2706]

Off topic. Do you use that orange to blue cable to transfer your programs to the machine instead of a USB?

[@EdgePrecision]

The machine has a network in it. I connect my laptop to that network. I than can drag the program from the laptop at the machine. The cable in the machine run from the control to the network hub malfunctioned so for now until I get time. I have run a cable directly to the computer in the control and directly to my laptop(that’s the one you see). Eventually I hope to replace the faulty cable and hook back up to networks switch hub. But in order to do that is a little complicated to run it down the cable track that leads to the control.

[@micahhunter2706]

Edge Precision it sounds difficult to run that wire. What are your thoughts on Okuma, I've heard they never break down. I have them coming out next week so I can learn about their machines.

[@EdgePrecision]

I think that all machines at one time or another have problems. I have run Okuma machines in the past they were good machines. But it been a long time ago. I think what you have to consider is the service you can get for the brand of machine. They will all need it even Okuma.

[@youcoulduseit7492]

Ya thanks peter all your videos are great. Some pretty helpful reading in the comments. Bet you have an eye on one of those new integrex with the metalizing lazer. always good to see you

[@EdgePrecision]

I was unaware of that machine. I will check into that.

[@runejakobsen9958]

@@EdgePrecision: Just installing the worlds first Integrex I-500 AM here in Norway now.

[@rizdalegend]

Capacitors scare the shit out of me. How did you discharge them before sticking your hand inside that $11k power supply?

[@strmrdr]

Power supplies most of the time blow at startup like that one did so I would leave them on. What does the book say about it?

[@EdgePrecision]

I don’t know but I have been running my Mitsubishi horizontal mill that way for many years. I always turn the main disconnect off every time. The Mitsubishi mill and the Mazak have the same controls. They both have Meldas controls. The servo drives in both machines are the same. You even buy parts at the same place Mitsubishi Electric.

[@strmrdr]

@@anonymic79 inrush current is the issue. the highest load the *FETs will ever see is at startup those big capacitors when discharged act as a direct short until they are charged. The *FETs are not rated for infinite times of that happening. It is also hard on the capacitors. Even in an AC system this happens. edit: they may be IGBT but same difference. Inrush current is bad,

[@strmrdr]

@@EdgePrecision yea its really an endless debate even at the engineering level. Which is why I asked what the book said. Whats the part number of the supply? I am curious enough to look up the specs..

[@EdgePrecision]

storm strmrdr I will have to look tomorrow when I’m at the shop.

[@strmrdr]

@@EdgePrecision thanks!!!

[@ipanzerschrecku4732]

The contactor looks newer than the others, it have probably already been changed once before and there might be a deeper rooted problem somewhere.

[@dennyskerb4992]

Good luck buddy, great videos

[@Steve_Just_Steve]

Would it be a good idea to put a filter on that air intake if possible Peter?

[@diegoaguilar9219]

You make it look so easy, but what do you mean " not own it long enough" we need you to keep sharing your knowledge!

[@EdgePrecision]

I will do that for as long as I can. But I will be going to Mexico in a year or two. But I have set aside a space there for my shop area.

[@captcarlos]

We haven't seen any updates on the building you tease us with as the background screen saver Peter... No doubt there is interest out here. Well done to get her going again. Pity at the , gasp, cost of that power supply!

[@dtiydr]

Idk, maybe the clogged up fan grille made the cooling insufficient and something got overheated and broke. I guess these use IGBTs and those could get quite hot during load and based on the huge cooling fins and metal backing I guess they will and thus need good cooling all the time.

[@biltema2000]

I am a industrial electrician, and when these ''psu's'' fail in a vfd, we swap the igbt's. So instead of paying off 11000USD it would have set you back probably 1500-2000USD at the most to have that unit repaired. Because 90% of the time the igbt's are at fault. And seeing that you got a spindle overload when going over to high speed, that is probably the cause. I am not hating on you, just trying to share some information about how we go about fixing this issue in the trades.. Cheers from Norway!

[@biltema2000]

And just one more thing, you should measure the current on each phase to see if they are pulling the same amount of current. If they are not you might have a failing spindle motor.

[@EdgePrecision]

The reason the current jumped up was the switch from the Y to delta was the delta relay not pulling in. The relays coil was bad. The spindle drive was trying to speed up the motor but there was no connection. It was actually coasting down in speed. So it was commanding more power to try to accelerate the motor it wasn’t really a overload. It was when I powered down with the main disconnect to change the malfunctioning relay. Than powered up that the power supply failed. As to the rest your the expert I don’t know. Your probably correct.

[@biltema2000]

@@EdgePrecision Sorry for skipping though your video, did not see the part when you where changing out the contactor. Good thing it is it all fixed now and the machine makes you money agian :-D

[@unrealillusion87]

I also would have tried to make an attempt to repair the PSU. I regularly repair old Fanuc PSUs. The PSU is probably the easiest thing to repair on such a control..

[@carabela125]

Another maintenance item for these Mazaks is the disk drive it stores data on. The data should be backed up to another hard drive on a regular basis. We had one fail and lost cnc programs as well as all the machine parameters.

[@EdgePrecision]

Yes you should back up the parameters. Most of these machines come with a backup disk in the controllers interface cabinet. I think this machine has one. Also at the very last resort there is a printed manual of the parameters. I have seen a case where they had to be manually entered. I wouldn’t want to do that.

[@hinz1]

Not exactly sure, but could this also be a timing issue of the relays? If you look at Y to Δ switch diagram, if Y relay is delayed in opening and Δ relay already closed, it shorts out the VFD drive output, with blown fuses and transistors and all that fun. I have a similar issue with my large compressor, but since no VFD involved, it only pops fuses occasionally. Another reason for the Y to Δ switch over is that higher rpm means higher frequency. Inductive reactance (i.e resistance without dissipated power) of motor windings goes up, as frequency goes up, so motor needs more volts for the same power.

[@ke6gwf]

Those would be twin Normally Open contractors with interlock switches, so that one can not be energized until the other one engages the NC auxiliary contacts signaling that it is open. No short circuits allowed.

[@paulmace7910]

Lucky you didn’t fry yourself changing that relay with live stuff that close. Be careful poking around with those big caps in there. Luckily it had sat long enough that they had discharged. Thanks for taking us on this trip.

[@EdgePrecision]

The machine main disconnect had been off for more than 24 hours. There was no power there. And I even check it with a volt meter in the video. I know in the video it doesn’t seem that way but it was.

[@spikeypineapple552]

Do you think the relay failing caused the psu to fail? Seems odd that they'd both go at the same time

[@EdgePrecision]

No I think it was powering down and back up that caused the problem. Nothing I could do about that.

[@spikeypineapple552]

@@EdgePrecision oh i see, like you never power it down, so coming up once in 3 years caused it to go?

[@Jewelrymaker]

That is one HUGE CNC... Expensive too.

[@DRrandomman22]

When you retire do you plan on selling the equipment to centerline or are you going to sell them to whomever. Also has centerline thrown a young apprentice at you to show him some of the ropes? Thats kinda what happened to me when i first started i shadowed the old tool maker for a couple hours a day. You learn alot from the old guys

[@EdgePrecision]

There is a guy I have been working with on their small Integrex. And yes I will be selling the machines to Centerline.

[@silent_tofu7921]

@@EdgePrecision you strike me as a guy who never really retires 😜

[@EdgePrecision]

We shall see. I would like to, at least give it a try.

[@jeffjefferson7471]

Your awesome ive said it before..... But for OSHA purposes lockout tagout next time👍👍👍

[@incubatork]

Normally electronic circuits last longer when switched on, provided they do not recieve peaks or voltage lowering(worse than peaks), what normally kills electronics is when you power on from cold, all of a suden they go from cold nothing to full current in miliseconds and heat up to working temp. This is one or the reasons the standby on Tv's, pc's etc.was invented, it keeps critical components somewhat active with some power so when you demand use they are not comming from cold to full power.

[@petethagore6975]

That remind me so much the time i learned to always shut the main breaker off when servicing anything electrical on a machine.. I was working on an Intregrex E410-HS and wanted to untie the spaghetti mess of wires and hoses from the coolant pumps.... I shutted the control off before unplugging the pumps but still got shorted because i leaved the main breaker on LOLLLOL

[@EdgePrecision]

Yes the control being off doesn’t mean everything is off.

[@dietermeyer9231]

Just do like me and let the 24V DC-cable touch the 400V AC. Then you will blow a few fuses on cards, some cards and one of the fuses on the intake.

[@paulsanti8517]

Did you check the amps from all the leads? If there the same it sounds like you need to check the output voltage from the board to the relay.

[@EdgePrecision]

I as I said in the video brought a expert in to look at it. And believe me this guy really know what he is doing.

[@paulsanti8517]

@@EdgePrecision I know, when we call Amada in most don't check simple stuff first and so far its 50/50 on simple and a stupid board. I check over all our mills and punch presses first on what I know before calling. 50 an hour vs 250 an hour.

[@paulsanti8517]

Fyi I love all your videos. I have learned so much more on setup and how to properly keep tighter tolerances.

[@multiHappyHacker]

Is there a CNC company that doesn't charge an arm and a leg for parts? The most highly rated machines for reliability have the most expensive parts and service it seems (Okuma, etc.)

[@NourMuhammad]

I would have suggested sending the faulty PSU to Dave Jones for teardown but NAH, for 25% return discount can't beat it!. Maybe you can do a quick teardown before returning it back, it is faulty anyway!

[@bembembemben]

First Dave, than return

[@Steve_Just_Steve]

I thought that's how all machines were wired, but I haven't been around a lot of different brands.

[@weldmachine]

It is wired correctly. Basically if the Mains are switched ON. It acts like a manual machine. The controller buttons only control the CNC side of the machine.

[@Steve_Just_Steve]

@@weldmachine yeah I know, I said I thought all machines were wired that way. Where you had to turn the main switch and not just control, but I guess not cause Peter has been around a lot more than me.

[@weldmachine]

@@Steve_Just_Steve All good. Your just getting involved in the conversation. I think sometimes people are scared off commenting as they think others will come down on them. Not sure why that is but it seems to be a common thing on KZbin. Myself I like to get involved in the conversation, Why Not. We all have a voice. Good talk to you. Peter.

[@Steve_Just_Steve]

@@weldmachine I try to always leave a like and comment on the videos of creators I like, especially this one because it's probably my favorite. It helps the video to get suggested. So I was just saying I didn't know there was machines that could be fully powered down by the control.

[@joeshmoe5935]

what killed the controller? Spindle being stuck in Wye for too long? I strongly believe that wye is not meant to stay like that for longer than 1/2-1 second. Wye is not slower just like 1/3 the torque which is why you have 1/3 the inrush of delta start. Only makes sense you want higher torque in lower speeds. Spindle has to immediately switch from Wye to Delta.

[@EdgePrecision]

No I have run the milling spindle and turning spindle wide open for long periods of time and under high loads. We had a power outage right before all this. I think it was that.

[@speartoolmachine7420]

They are most likely IGBT's (insulated gate bipolar transistors) that chop the DC up into 3 phase AC. Typical of a VFD

[@EdgePrecision]

What ever they are they are large. About 3” wide and almost the whole height of that power supply. I couldn’t tell how thick. The power supply is pretty heavy. I would say about 50-60 pounds.

[@pajaman8614]

I agree, either on inverter or converter side, they take all the beating,

[@amciaapple1654]

I had the same problem with my Mazak machine, but I repaired the power supply myself.

[@rowanlidbury]

Wow. That is all going to have to come out and fans, filters etc replaced.

[@waynep343]

while you had the big power supply out.. after finding grease and grime on the fans inside the cabinet.. did you use a scope camera or a bent arm to look at any grease on other fans behind the power supply that need to be cleaned.. replaced.. to get the cooling going again.. fan motors have a life before they slow down and stop cooling. noisy bearings. as for the oil vapor in the shop atmosphere. i would imagine that there might be creative ways to remove large percentages of it.. using conventional heater cabinet filters.. and a large squirrel cage fan in a box. only a minimal filter on the outlet so you can't build outlet pressure. but the many easily replaced pleated filters on the outside of the box.. a remote control winch to move the box up to the ceiling.. so its out of the way and easy to service. it does not need to run all the time.. only when the machines are running and creating oil vapors.. and perhaps an hour after shut down.. hand wound timer switches are available. so an hour could be wound in.

[@EdgePrecision]

A shop I worked in installed mist collectors around the roof of the shop. This was very effective in removing the oil mist in the air. This shop had 22 Bridgeport mills all with mist coolant systems. Before the installed the mist collectors the place was like working in a fog.

[@hdfanboy]

With the power remaining on at all times I would imagine its for battery backup reasons. You have a battery backup for all your parameters and programs and whatnot which would last for a fair while without power on but if you have power on constantly you wouldn't have to worry about problems like that.

[@EdgePrecision]

There are batteries in the control for that. Three of them like used in computers to back up the bios configuration. There are also batteries in all the servo drives in the tool changer. Because they have absolute position encoders. You dont ever zero return the tool changer or its magazine. If memory serves me I believe there are six areas in the machine that have backup batteries. I have at one time or another replaced all of them. The control will give you a message when that is necessary.

[@dietermeyer9231]

@@EdgePrecision: Change-intervals on batteries are every 2 year on the drives (MRJ2) for magazine, tool-shifter, tool-carrier and ATC. Some machines have absolute-system on the axises and that is every 4 year (or 2 year depending on what type it is). The NC is every 4 year.

[@EdgePrecision]

Dieter Meyer yes I know about all the batteries in the servo drives and the control. I have changed all of them more than once.

[@drubradley8821]

Reminds me of a machine I used to run, long time ago, so, yes, the controls are yaznak.... but, the current load bars, one of each of the 3 lines, that has a dinky enamel coated wire wrapped around it, which is what gave the real-time load figures on-screen, and other computational functions, ... but the company took a lightening strike and those dinky wrapped wires, based on the inductance, was just too much... the rest of the machine's electronics and controls were fine... but we could see clearly, the dinky 24 to 28 Gauge wires on each bar were smoked... The machine didn't know what to do, with out seeing those signals... all results from only turning off the computer, but not shutting down the main... The manufacture of the machine, knew exactly what it was, and next day aired the replacements out, for all the machines that were affected... The table would move in X & Y... the Z up and down, likely due to servo having their own I/O, but, the spindle RPM's was out in left field and intermittent or ... if at all.... the memories...

[@Strothy2]

Where is uncle Bumblefuck and his trusty Dewclaw if you need him :D Really weird problem... anyone know if this is Mazak specific or does anyone out there had something comparable to this?

[@OMY005]

Happened on one of our HAAS machines, coil failed on one of the contactors/relay.

[@Strothy2]

@eixid if you got any got dick jokes I would like to hear them, don't see any in my comment :D

[@billyfriday]

Leave the machine on. Just hit the emergency stop at the end of the day and if you can turn the screen off I've got a machine with a meldas control and if it is left un powered for more than 48 hrs I have a power supply alarm and need to get the power supply capacitors changed All my machines are left powered up at all times. They keep themselves warm and dry that way.

[@weldmachine]

Keeping the machine warm is a great idea but as you would already know if you leave the power switched on this will shorten the life of the electrical components. If you are burning up capacitors there must something else wrong that has Not been fixed as yet or there is another problem with your machine ? Or is faulty. But if keeping the electrics warm works for you I guess you need to do what makes you happy. Regards Peter.

[@Sicktrickintuner]

Decent having a delta wye starter relay system

[@EdgePrecision]

These relays don’t start the motor the speed controller does that. They just change the wiring configuration. The slow speed relay is already pulled in before the motor starts. The odd thing is the high speed relay is the default power on condition. But the minute you command a speed it changes. When it was malfunctioning. I could run the machine as long as I didn’t command a speed requiring the high speed relay to pull in.

[@Sicktrickintuner]

That is quite odd, I would have thought it kept the low speed relay contacts on then switched. Just a weird design

[@andrewgiles6192]

Pack it up and send it to AVE and he can look at the failure mode, that would be a good video 👍

[@EdgePrecision]

If I could afford to blow off the 25% I would. Just to see the video.

[@andrewgiles6192]

@@EdgePrecision I forgot about the core rebate, that is 100% understandable. Maybe the relay? 🤔 BTW did you consider pulling the others and cleaning the fans?

[@CapeCodCNC]

Damn that machine is big enough to have its own zip code and power station! Those big caps hold a charge for quite a while and will dump more 10,000 amps in a millisecond to whatever touches them....you don't want to be the source of the magic smoke! As AvE says don't stick your fingies where you wouldn't stick your ___________! I was yelling at the screen but you didn't hear me!

[@EdgePrecision]

Thanks. The video is a little out of sequence. The main disconnect had been off for a whole day before I changed the supply. It took that long to get it. And I didn’t turn the power on before that. Also I didn’t get the screw driver even close to the capacitors. It just looks that way in the video. Even so I was being carful not to touch the shank of the screwdriver.

[@CapeCodCNC]

@@EdgePrecision I kind of figured you knew what you were doing but the video made it look scary. Good info anyways for those that don't know......

[@dietermeyer9231]

This is a small one. You have the e-800h with 6 meters of Z-axis travel. The e-1850v need a floor-space of 125sqm and that is only for the machine.

[@comictrio]

Nice job on the repair. Fortunately it was a simple bolt in replacement without any complicated configurating to complete the repair.

[@EdgePrecision]

It was within my abilities. Any more than this I get my Mazak expert guy to do it.

[@NourMuhammad]

I can't believe an 11K$+ PSU gone bad that easly because of some short circuit somewhere !! Unbelievable!

[@EdgePrecision]

There was no short circuit. It just gave out on a power up.

[@NourMuhammad]

@@EdgePrecision Most likely as others mentioned in the comments, the old contactor malfunction kicked a series of events that made the PSU fail. In fact it may be just a fuse that failed in the unit or atmost the output stage"power transistors". It is very hard to be convinced that an 11k PSU just failed, those unit build like a solid piece of steel to last forever with minor repairs Anyway, do you know how old the machine is ?

[@NourMuhammad]

I highly recommend you at least take a look at the fuses in the faulty unit, may be you will find it was just the fuses :D if there were ever fuses as we know them! Those high voltage, high power industrial PSUs are build using Alian technology:D .

[@Jay9999]

Thanks

[@hichamkasbi2713]

Hi brother how are you doing

[@curtisvonepp4335]

I've been turning the power supply off because i noticed some controls where warm to the touch to save electricity i killed all power input maybe that's saved my pocket book 💰 more ways than one 😨🐤

[@brownmilligan1936]

that thing is costley. thanks

[@DavidtheSwarfer]

the control pc starting slow .... double the ram if possible, and clone the harddrive to an SSD and use that instead. just keep the old HDD safely in case the SDD dies prematurely. my cnc router runs off an old i7 laptop that boots off an SD card. takes ages to come up (Xubuntu OS) but once it is running it is just fine, something about the default drivers that are slow but get replaced late in the boot cycle with fast drivers.

[@EdgePrecision]

This PC in the control is more a industrial type. You cant just take normal PC stuff and install it. It is all propitiatory type of hardware.

[@DavidtheSwarfer]

Ah ok, much harder then...

[@dunkd2a3n]

"I might not even own the machine for long enough to tell" does this mean MAZAK is giving you the newest model of this machine to make new videos on? Please? hahahah

[@EdgePrecision]

No this machine is about 13 years old and I don’t plan to be doing machine work for that much longer. Maybe only a year or two more. Moving to Mexico is in my future. To my hotel.

[@pkav8tor]

@@EdgePrecision Please give location when you will be up and running. Would enjoy staying at your hotel.

[@EdgePrecision]

My building/hotel is in the the city of Guanajuato in the state of Guanajuato Mexico. Look at the opening shot in the video. On the large screen behind me is a photo of it. Not exactly up to date but it will give you a idea.

[@pkav8tor]

@@EdgePrecision Fantastic, will be looking forward to it.

[@robertklein9190]

@@EdgePrecision Peter, it's suppose to go to Mexico to retire, not to to become a 24/7/365 innkeeper, and are you sure they will let you work there.

[@NourMuhammad]

Half of that PSU is literally busbars!

[@vincei4252]

Expensive busbars

[@bcbloc02]

So essentially because they didn't build the spindle and gears to take full motor power grunt their derate torque protections cost you a fair bit of coin. :-(

[@EdgePrecision]

I’m not exactly sure what you mean. The spindle and gears don’t have anything to do this spindle drive. This machine has a 60 hp turning spindle. The head stock and gear box are quite heavy looking. I don’t think the would have any trouble handling that power. The machine is almost 13 years old. It’s not a surprise if it has some problems. The people that owned it before me didn’t look like the babied it at all. This machine has been run hard.

[@bcbloc02]

@@EdgePrecision I meant that they are running the different winding configuration at lower speeds to reduce the motor torque. If they didn't feel like that it needed reduced they could have just had it wired to run in the high power configuration all the time and saved all that extra wiring and circuitry. Clipping power at low speeds is nothing uncommon the Cincinnati High Power machines ran 25hp up to 600rpm and then 50hp from 600-1600rpm clear back in the 40's. The machine would have to be built much more robust to be able to handle the torque generated from a full 60hp with it gear reduced down to a low spindle speed but you could take some nasty big cuts!! :-)

[@EdgePrecision]

My horizontal mill uses the same configuration and it’s a direct drive spindle. The motor is the spindle. I think at the lower speed the star/Y wiring configuration gives more toque. The delta gives more horse power at the higher speed. Believe me that horizontal mill doesn’t lack power at any speed. Maybe running thru the speed controller this give you a more flat toque curve. I don’t know but I do know that the direct drive spindle on my horizontal mill has a lot of power. I have sheared the keys on a face mill holder without even stalling the spindle. It did wipe out the cutter and shank though. Lucky I was there to stop it.

[@ke6gwf]

@@bcbloc02 you are confusing horsepower with torque. The star/wye starter is to give more torque at low speed, and then switch to get more torque at higher speed. So it does the opposite of what you say, and puts more load (more torque) on the spindle at low speeds than if it was just straight wired.

[@bcbloc02]

@@ke6gwf I don't know the details of exactly how they have the windings broken out and wired but assuming they use full voltage in both configurations the wye configuration will reduce the torque by 1/3, at the same time it reduces the starting current by a factor of 3 so by using y starting the inrush current when the spindle starts is much more manageable, also the wiring and contactors can be much smaller because of the reduced load demand. The lower torque is also much easier on the components of the spindle as it doesn't get near the inertia hit that would occur with throwing a full power delta setup at it. The purpose of wye/delta configs is to reduce current and heat in the motor when starting and operating at low speeds when the power of a delta setup is not needed, it does not give you more torque.

[@FesixGermany]

Eleven thousand dollars for this PSU... what the heck?

[@hichamkasbi2713]

cnc machine mazak pfh 4800 error code 306 can you please help me

[@James-fs4rn]

Gonna take a few videos to pay for that one. Sorry about that. Glad all's well.

[@multimediapcuser412]

Always the same problem with all Hi-Tech machines. You must pay maintenance contract every year , else you must pay 11k for a rectifier... ! Of course you can not touch your machine or do any upgrade. You must paying and paying all the time for anything extra. Like a Pc upgrade, even software upgrade. It's a stupid policy for something that it's cost maximum 1k, must pay 11k.

[@deweys]

It doesn't need an alarm.. Poor machine already sounds like it's screaming for help

[@larsmark]

I bet they fix the powersupply for almost no money at all and then re-sell it for $11k again. Anyway hard to do anything about if not fixing it yourself.

[@EdgePrecision]

The thing is if the parts in it are only made by them. Or they only have the rights to them its hard to repair it. And I don't have the know how or expertise to do the job. Its better for me to get the 25% refund. That's why they know you will do it.

[@larsmark]

@@EdgePrecision Yeah I fully understand.

[@dietermeyer9231]

Mazak doesn't fix electronic parts, that is being done by Mitsubishi. And it is much more work behind it then "just replacing a $50-part".

[@jayhunsberger1546]

You should tear that power supply down. I bet you find a blown transistor that energizes the contactor coil. I fix my own MDS stuff all the time. Ive has this exact same thing happen to me. You could probably fix it for $10 and have a spare.

[@EdgePrecision]

Yes that may be so. But I don't have the know how or expertise to track down the exact problem. If I dig into it and change something. Than cant find the problem. They wont take it back for the 25% refund. Or what if the problem requires some proprietary part that only they make and wont sell alone. Than what could I do. It's better for me to go for the sure thing of the 25% refund.

[@jayhunsberger1546]

@@EdgePrecision I would atleast tear it down and look for a fried transistor. Does anything smell fried on it? This has happened to me several times on Mitsubishi MDS power supplies. It might pay to look into it so you have an idea what's going on. Didn't you say this is the 2nd time this has happened? I'm hoping you can figure the weak point out on it so you can fix it for cheap. Maybe you could find a local electronics guru to take a look. Trace the contactor coil output on the circuit board and find the transistor. The drives are simple to take apart. Not much you can hurt. Your a smart cookie...you can totally do this. I really dislike Mitsubishis flat rate repairs. I bet they want atleast 8k to fix your power supply. It's probably just a 2 dollar transistor. What's the model number of your power supply?

[@jayhunsberger1546]

@@EdgePrecision This power supply should last atleast 10-15 years. Is your 3 phase the correct voltage and balanced?

[@dietermeyer9231]

@@jayhunsberger1546: And if you look on the sticker it says 05/08. That means the part in question was made in August 2005. Isn't that between 10-15 years?

[@bigjd2k]

If that contactor failure is so expensive it might make sense to change it every so often. Bit of a bad design really!

[@EdgePrecision]

It was the power supply that is expensive. The contactor didn't cause the power supply failure. It was just a coincidence that they failed at the same time. I have replaced the same contactor in my Mitsubishi horizontal (Same Meldas control system) with no power supply issue.

[@wheelitzr2]

There is an obvious issue with that circuit because that exact same breaker has been replaced, my guess is that contactor is to small and being overloaded every time it closes. Edit: every it closes/opens with a large load on it. Also turning the power off will help however, what hurts the equipment more than anything is the heat in the box they are all in, that stuff generates a ton of heat, your better off opening the cabinet door and blowing air in with a fan.

[@EdgePrecision]

The contactor didn’t fail just the coil that closes it.

[@johnway8702]

From what I understand about Peter's video, these contactors do not start or stop the motor, they simply change the configuration of the windings in the motor. Given the motor is already spinning when these contactors are pulled in/out, how much load would you expect to be on these - certainly not the high currents of a line start. Contactors are wearing components as far as I know and will need to be replaced.

[@wheelitzr2]

@@EdgePrecision I would check all the wire connections powering that coil. Have you checked the power and neutral on that coil? There has to be something wrong in the coil circuit, I worry that it will ruin whatever switches that coil, either an ice cube relay or some sort of relay board. If it's an ice cube relay those are $3.00, if it's a relay board that could be tens of thousands. This is what I do everyday and if I was in the area I would be more than willing to work on that thing for hours without charging you. Thank you for the videos.

[@wheelitzr2]

@@johnway8702 you are very correct and that's why I was worried that there was something wrong in the circuit and if not it would be to small. The point of inertia is already rotating and the vfd takes the majority of the load so these technically shouldn't take much load at all. He just informed me and I'm not sure where I missed it in the video but he said it was the coil not the contact side so I would check the coil circuit for loose connections or a bad relay.

[@EdgePrecision]

Thanks. The power to the coil was fine. In fact the whole thing is working now. Mitsubishi doesn’t sell the coil by itself. And I don’t have time to track it down.

[@GroovyVideo2]

touching capacitors give me willies

[@d.n.nwitambu5588]

Hello

[@Roelasia]

send back?... of course they want you to send it back. 50 dollar new parts and its up and running again. waiting for the next customer. 😅

[@dietermeyer9231]

And dismantling it, cleaning it, check for more damaged components, replacing damaged components, assembly it and then testing for 24 hours? A little more then just replacing parts for $50 and ship out again isn't it?

[@Roelasia]

@@dietermeyer9231 what i tried to say is that there are enough replacement/exchange programs for parts such as these.

[@TheFixxxer11]

Whatt,,, eleven dollars,, 😬😬😬

[@mcl12]

Ask snap he got it

[@mattiasarvidsson8522]

im sure mazak can fix it for $75000

[@EdgePrecision]

Actually to get it fixed. You deal with Mitsubishi not Mazak. All Mazaks have Mitsubishi Meldas controls. Mazatrol is just their software controlling a Mitsubishi system.