BOLTR: Lenze AC Tech Drive | The VFD Channel

[@briangarrow448]

The moth balls joke goes into my "Dad jokes" file. I'm a terrible father.

[@dkjoses12]

It was funny

[@crackedemerald4930]

At least you are one...

[@jonhare392]

Brian Garrow I remember it as "How'd you get their legs apart?"

[@williamhayden7711]

I learned this one when I was a wee lad, but the punch line was "how did you get the little legs apart?"

[@NathanielHatley]

"Luckily I'm not in California, so it won't give me cancer."

[@outchang3112]

that schmoo is definitely “known to the State of California to cause cancer or reproductive toxicity”

[@jkbrown5496]

When they find so many things causing cancer, it is good to look at what the findings have in common. In this case, it is California. So it might just be California that causing the cancer...

[@handsomerob1223]

I live in California and can confirm that our major export is pure grade A uncut cancer. Hell the whole state is made of cancer.

[@jamer15961]

It would probably easier to get a list of items known not to cause cancer in California than a list of items that would cause cancer

[@johnpossum556]

+JK BRown Great observation. Awhile back PBS aired a new generation sort of ocean show with Jacques Cousteau's relatives and they tested them all. One Californian mother fed her son nothing but organic food and still the tests revealed he overwhelmingly was the most likely to get testicular cancer. Remember the ozone hole over CA? They kind of infered it might be that. Undoubtedly they get more UV than most of us, at the very least.

[@chrisellingson123]

I have few of these lenze drives. I used one on my DIY compost trommel. It turns out a plastic shopping bag does not work well as a 'temporary' outdoor enclosure. The drive emitted a loud bang after powering it for the first time in 6 months. I opened it up and found an unfortunate partially vaporized spider across the main capacitor. I cleaned the webs and crap out the VFD and found no damage. It has been operating fine since.

[@akimboslice03]

Back in high school I worked at Lenze in assembly & test. I swear I manually checked those boards for all 12 signals with the old tek scope!

[@neocovorkianskutweavel1346]

This is hands down my favourite channel on KZbin. Always learn something, always laugh.

[@cicibradley2809]

Neocovorkian Skutweavel He's a Bonnie, a beauty, AND a joy.

[@badmofo350]

Forever

[@bigmatt7655]

Loose wires start fires! Source: am elecchicken

[@timoffen3615]

My wife asked what I laughed at so I told her the joke about the mothballs, she just said "Oh" and went back to her phone

[@orbitup]

Same thing happened at my house.

[@maxheadroom7992]

Same thing happened to me and a co-worker.

[@getluvs1c]

Same!!! Hahaha

[@s3rji0]

Same thing with my wife. Seems like a common issue with the women folk, just don't seem to get good ol' Uncle Bumble's jokes.

[@AdrianMulligan]

I was drinking a beer when he said it...my screen!

[@theorigamikid]

Oh my goodness, I found someone that uses the ole mothball joke. I have to say on that note, I look forward to watching your videos and always wait for more. You have brought me back to my old passion of fixing electronics. You my sir are properly skookum and are indefinitely my #1favorite KZbinr. In your words keep your pecker in a vice.

[@Sizukun1]

I think as far as the thermal paste producing that fractal design every time, its got more to do with the pressure applied, and then you pulling the thing up. You can see this if you apply thermal paste to a CPU, then lift the heat sink off even when its still wet.

[@dasstackenblochen9250]

Yeah this doesn't indicate bad thermal contact. It's just how these viscous white liquids behave. It's a problem if its all dried right up... In fact, if the topographic map looks nice and even all over it means that the schmoo layer had a consistent thickness and contacted both sides well.

[@Sizukun1]

While I don't know for sure, AvE doesn't seem like the type to be applying thermal paste to CPU's or heat sinks. I assume he could use some lithium grease, toothpase, or any other viscous paste/grease, apply it to a flat surface and use another flat surface to replicate this. His Gauge blocks would be fine, otherwise he could re-use these heat sinks just as a little experiment.

[@peglor]

I'd call it more of a constructal than a fractal pattern. Constructal patterns have a minimum feature size determined by the physics being examined rather than being a mathematical pattern that looks similar at all scales. Constructal patterns usually show up where there are two ways for a system to distribute energy/mass/velocity. Tree like patterns are the most efficient way of joining an area to a point if you have an expensive but high capacity path competing with a cheap but low capacity path, which is presumably what's happening as the heat sink is lifted off where air wants to flow into the gap as it opens while schmoo wants to get out of the way.

[@omegagavin]

I bet those tactile switches were wobbly from the day it came out of the factory.

[@stevekline7247]

You my man,,,, are a one IN A MILLION !!!!! I just love your info that you share,,,,,,, your approach to deliver is more than timeless !!!!

[@andrewbutcher6209]

Not sure if its been mentioned before but the reason the thermal compound looks all cracked (assuming its not totally dry) is that the sticks to both sides and surface tension (or something along those lines) pulls it into peaks as the 2 halves are pulled away from each other.

[@NeverLetOff]

Pretty sure the Mars surface look from the diaper cream has to do with it you pulling it off. I have seen that happen with brand new stuff I had to remove right after putting it on.

[@AndyHullMcPenguin]

".. has to do with it you pulling it off." I think youtube must have censored that bit of the vijayo..

[@spikeydapikey1483]

Worth watching for the funky green screw and the non setting smoo !!

[@schregen]

Spikey DaPikey schmoo! 🍄

[@nsnick199]

Gesundheit

[@Evan-jd5db]

I knew from just clicking on the viendo it was a treat especial

[@captainmoore5835]

That amber goo is made down at my local Dow Corning plant. I still have some jars of it in the garage somewhere. "Non-conductive silica gel" I believe. Used to coat circuit boards that are exposed to dust and vibrations. Never actually seen it in use until now.

[@ZeroPointAlpha]

I got a few of those things from my old HVAC job, they were sold as "Motor Master V" units. Only difference I see here is the IGBT modules were larger, multi-packs used for three-phase motors and the capacitors are a different color (blue vs. black, probably larger value too), but other than that it seems the control module is identical. Fun fact: There's a SPI-based Flash memory module hidden in that blue hunk of plastic.

[@christopherwhitney6123]

Hi, just wanted to say thanks for sending me"one ruler to rule them all!" I got one for a a gift and one for me. Love your channel. I'm learning a lot. Thanks for sharing.

[@darkwinter6028]

I’ve seen some new, unsoldered tactile switches like that... it’s possible it came that way from the factory. Also, you might want to harvest those big caps... 🤔

[@cavemanooga]

We use a similar potting compound to insulate high voltage circuit boards. It's sort of like 2 part epoxy, so you can change the mix fractions to get something boogery or solid. Don't know what it's made of unfortunately.

[@JamesCampbellPPG]

I cut my teeth installing and programming AC Tech drives. Love them.

[@jasonharrison25]

loose connection does not always mean heat. it also means arcing and arcing means high voltage spikes. high voltage spikes kill electrical components

[@7head7metal7]

I used to work for that company here in Germany a few years back. Nice to see some of their gear in your gentle hands :D

[@zmac7977]

We use these AC Tech drives in gravimetric feeders in our plant. Hadn’t replaced a single drive in 8 years running 24/7. El cheapo drives but are surprisingly reliable I’d say. Although the brown discolored plastic on the outside of the drive doesn’t give me the warm fuzzies hah!

[@nicklemberger3101]

That thermal transfer compound also looks like that if you take the parts apart when it's new.

[@TheTwtwo]

i got one of these lenze drives that the IGBT burned straight through the heat-sink, and another that had a dead short across the phases blew 2 reactors, before the tech working on it skipped the line reactors and smoked the drive. both were brand new drives installed in a parkade fan system

[@leadingseamanphilbillingto100]

Took me a while to watch this. Had to pause for a few minutes after the mothball joke to recover. That's a 10/10

[@ericpuse5151]

As others have noted, the pattern in the heat sink compound is from the suction while pulling it off. Also would be interested in details on hacking the drives. I see them in a lot of boilers and HVAC equipment to drive power burners, and big ass fans canadian hq is in one of my buildings so i could pop into their tech department and ask a few questions.

[@stonent]

Those look to be Nippon Chemicon caps by the shield logos, but are branded AC Tech.

[@ddkessner]

There are a lot of "Phase Change" heat sink thermal transfer material. At room temp it is a solid but turns into a liquid at operating temps. You can get it in solid die-cut sheets or something like a stick of under-arm deodorant. It is easier to use in manufacturing while better handling any uneven gaps between the heat sink and whatever you are cooling. Most of the big cooling solution manufacturers have it including AAVID and Bergquist. This might be why you keep seeing powdery thermal compound.

[@marksierra3522]

It's always a treat especial when AvE posts a new video.

[@halsoy]

AvE, that moon surface pattern is probably just a result of varying surface/molecular tension inside the compound itself or simply as a result of air getting in and creating "channels" as you pull the two surfaces apart. The same thing happens on CPU/GPU heatsinks. There are videos on the tubes that show you different methods of applying thermal compound to said components, and demonstrating what happens by using an acrylic sheet as the contact surface. This shows the same surface patterns appear in every scenario as soon as you take them apart. Here's one such video: kzbin.info/www/bejne/e6q7fahngthgp5Y - One fun note is also that it appears the less viscous the compound is, the more pronounced the patterns get.

[@shammient]

I picked up three of these drives from the dump shop for $5. All still working to this day.

[@AtlasReburdened]

Damn dude, fuckin over the clever poor people.

[@ShawnGuertin]

Your VFD videos are starting to to become subliminal! Last night I dreamt that I was playing with a VFT drive, and it seems like the magic smoke can find it's way out even in my dreams...

[@billmyke746]

AvE has OCD for VFD.

[@billmyke746]

Gordon Richardson Wow. That's one hell of a machine.

[@teoft-767]

the amount of unicorn snot necessary for the electronics industry to work must be phenomenal

[@LazerLord10]

Hey, while I'm on the early train I thought I'd tell you something. The busted powdered metal nut retaining that thing on the Skil Saw? I think it may have broken when you tried to bust it off with a rod and a hammer in the original BOLTR of it.

[@LazerLord10]

Oh, didn't realize! I keep forgetting that annotations are no longer a thing.

[@Sixta16]

Those switches are likely not worn out from vibration. Most of these long shaft ones are like that even when new.

[@SeanBZA]

Got some Lenze motors and industrial parts in equipment at work. No surprise that it is Lenze though, seeing as the rest of the stuff is Brown Boveri and the machine is celebrating running for nearly a half century soon.

[@karineguillette5199]

Anybobdy else warching to this shtock on the couch 'cause of a broked leg? Thank for so many upload.. you make my hibernation so much less painfull!

[@Octopusbeak]

Wonder how the insides of the higher end ac tech vfd's look by comparison.

[@robmerchant4291]

I don't really understand a lot of those videos, but love watching them anyway.

[@cabbagehead8973]

i nearly fucking died at that moth ball joke, its not often that an "uncle joke" gets me like that. i like to give credit where its due! keep up the good work uncle Bumblefack. love from kentucky

[@dkjoses12]

It’s hard to get in there before they fly away.. lmao that was funny

[@R1pperB]

I didn't get it.. Care to explain to a non-native speaker?

[@Sixta16]

There should be no other set of bond wire on the diode. The pixies get in (or out) using the bond wires and get out (or in) using the copper substrate below.

[@tomuchfunwithgas846]

Another great piece. Also I must thank you AvE for turning me on to EC's channel. Learning stuff I didn't know I didn't know. That is one bad mother of an air hammer. Keep up the good work and bad jokes. Moth balls fer the, chrissakes bout fell right half outa me char. :)

[@FullMetalFox2]

Those tiny terminals are pretty much standard for low amp in germany. They are the exact size of the default "phase tester" screwdriver we commonly use for electric work, since they are so dirt cheap even many home owners and DIYers in germany do own a couple of those screwdrivers. You should get one, they are great ;P

[@richfiles]

3:23 Good advice. I always just grab my meter when I need to work out some stress.

[@EscapeMCP]

3:23 "Just grab your meter." "But mine's only 15cm, boss"

[@xhighalert]

"You ever smell moth balls? Tough to get in there with your nose before they fly away." "Arcing and-a Sparking happening in there, either somebody did a hot swap, and got a bit of a.. Start!" You sir are underrated and funny as FUCK

[@UberAlphaSirus]

5:07 looks like sponge bob fell asleep on the pattie cooker! Maybe I'm wrong there then, at 5:24 thems his there legs. Must of been a lava accident or something.

[@IanGrams]

You've got 666k subscribers, better offer some VFDs to Beelzebub!

[@jackassplus]

It's 667k now. Sacrifice no longer required.

[@DerSolinski]

Ohhhhh, that's the schmoo that reeks and is dripping out off those things when they prematurely think it is Sylvester...

[@yaidontknowwhattoput]

The closed captioning on this is remarkably good for the amount of word play and language jumping.

[@markd9946]

WORD PLAY ? LANUAGE JUMPING ? I THOUGHT ALL CANADIANS TALKED LIKE HIM. HUH

[@henrybeason1407]

Sorry this is a weeee bit off topic it kind of holds to the same principle of that compressor Jig that you had set up so the drive would speed it up if you gave it a certain signal. what if you could do that with the digital readout on the lathe so when you’re feeding in your crossfeed it can speed up accordingly to have the consistent revolutions per minute to give a consistent cut as well as it not causing much vibration so you’re going at the right speed when you’re facing any material just a thought from another shop junkie.

[@MrBruce-np9rj]

The 575 AC tech drives used to come with a label over the input terminals that said not to apply over 590 volts, but routinely over 600 here. Doomed from the start...

[@TheLawnCareNut]

There's Something About Mary

[@jasperwatson993]

With the cracking effect on the thermal compound, does it do that when you pull the two syncs apart? I know when I've built PCs it does that if I pull the heat sync off a day later or so

[@patrickschumacher4656]

Has anyone had issues with vfd functionality at cold temperatures? I had one change rotation on a 3 phase pump. The temp was -10 Fahrenheit. I didn't know that was possible. Changed around two legs to temporary fix it until the weather changes.

[@jmkasunich]

Regarding heat sink compound - there is a good chance it is NOT silicone based. Many VFD makers are going non-silicone because the auto companies won't let silicone (of any kind) into their buildings. Silicone (even in minuscule amounts) can cause defects in painting processes. Auto makers live and die by their paint quality, so they've banned the stuff.

[@aserta]

Yeah, BUT, this one is an antique, by electronic standards.

[@lrodpeterson3046]

Wooddorkers know about that, too.

[@NextGenesis88]

Paolo G My 95 S10, original paint quality was fantastic, 08 Jeep and it has orange peel. Saving their nickels I guess.

[@TheOriginalEviltech]

Hi, I've got one of them Lenze drives with a failure in it's 5V power supply, i would appreciate a i res pic of the power board near the transformer :) The chips have holes in them larger than themselves :)

[@ir0nm8n]

Ho Ho Ho, Wish you a very treaty christmas, as a gift I watched the whole ad

[@DGV_Tips]

Amazing how you can make an electrical autopsy so frickin interesting

[@lonhoschar1943]

OMG!! Will it never end... as I sit here laughing my knickers have done slid down to my knees what fer the visual .. ... "tough to get your nose in there before they fly away"... THAT'S FUNNY!!! LOL!!!

[@TheCalgarydoug]

4:52-- looked like the gel the tampon people say the schmoo in their pads turns liquid to. On the other hand it looks like something my sister used to serve her husband. Poor Sam.

[@Roy_Tellason]

On your phone blanking when you're trying to do stuff like this, here's how you fix that: Go into settings, then into developer options, and there should be something in there to fix it. On my Moto it's "Stay Awake: Screen will never sleep while charging." I haven't used my Samsung POS for a good long while so I don't remember what it's called exactly, but it's in there, and pretty similar...

[@Joecs520]

chootch for chotch ? please someone explain what he's winking about as far as modifications

[@N3r0512]

Have you ever worked with allen Bradley/ rockwell drives? I've worked in their vfd drive pcb manufacturing.

[@philkraemer3927]

....Amazing material, for sure! 6:14 The schmoo, a nice booger collection, yummy :-)

[@LukeWage]

Fun drinking game, take a shot every time he tilts it on its side. :)

[@northbay1014]

Just a suggestion but ridged has that palm impact

[@MysticalDork]

What is this, the 12 days of BOLTRmas?

[@jakp8777]

Lenze drive is only German in name only. It’s really a ac tech and lenze bought them out. Lenze has their own much more complicated drives.

[@aflippy21]

So these smaller drives seem to be built down to pretty a low price. Any opinions on the bigger brother vector drives such as the Lenze ESV371N01SXB? I'm currently looking for something to drive a 3-phase vector duty motor on my small metal shaper.

[@joshuapotter7372]

AvE, if you can do a video on the Bissell Bark Bath dog bathing device.

[@eeljn]

Still waiting to see the harbor crap vulcan welder dissection. This video was good as usual.

[@EitriBrokkr]

we just had a 25hp drive blow apart, took out the service utilities fuses out on the pole.

[@timothydaniel448]

I have a automotive lift acme screw drive on each side chain connecting the screws at the bottom 3 phase 5 hp belt drive motor no access to 3 phase do you think one of these ac drive would work ???? HELP

[@1LoudCRX]

Where did you purchase this for $200? I'm having trouble finding it for under $400

[@edgeeffect]

What's the snot for? I've never seen the like of that before.

[@evanislost]

What microscope do you use?

[@syverjove]

When the pixies can’t get out, they assplode.

[@codysett1]

That mothballs comment killed me lol

[@Steevo69]

As a man (my woman said I am) who has worked with electronics and heatsinks, the pattern is caused by the viscosity, surface sticktivity, surface quality, and vibration, every heatsink that wasn't overapplied with Thermal Interface Material (Some call me..........TIM!!) will have this pattern, the ridges seen on one are generally the result of tiny surface imperfections and when you pull the two apart the material is pulled into those voids and whichever surface it has more adhesion to the TIM will develop the ridge of goo. The "burn in" period of most high end thermal compounds is both being phase changed into a liquid (polymer net just like multi-viscosity motor oil) that allows vibration to move the suspended particulates (diamond, carbon, silver, boron nitride, tiny rubies etc..) into the voids in the surface. www.arcticsilver.com/#

[@joshwalker5605]

Dont s'pose you could link to where u got that usb microscope could ya?

[@Sixta16]

You can NOT check the diodes in the IGBTs like this. Not measuring anything between the Ts actualy does mean the IGBT brick is OK (or blown open respectively). Based on this single measurement you can't say if it is OK. If you want to measure the internal diodes, measure the T terminal against the DC bus + or - on the filter capacitors to check individual diodes!

[@Sixta16]

Measuring like so you will always have two diodes connected back to back. When blown, you will measure a short accross one of the IGBTs or sometimes even between phases. masters.donntu.org/2007/fema/rudenko_y/library/art9/fig5.gif

[@raymondmucklow3793]

Did you pull them big black set of caps, of her wa

[@SatusUnkown]

Please please do a Christmas special and take apart an Anki Cozmo!

[@andreim841]

666k subscribers... Let's open the portal and release the schmoo...

[@makingthings277]

Hey man, you like that fluke 117? Just about to pick one up from the Amazon.

[@WeighedWilson]

How often should one clean his vise? Asking for a friend.

[@jacobmiller6664]

I got a kick out of "lucas, prince of darkness style." I haven't heard that in a while, good Ole lucas electronicals.

[@drewlarson65]

Dunno why you think all thermal compound looks craptacular after you peel cured parts away from one another, even the big money paste pulls apart when you pull the die off the heatsink. sometimes taking shit apart wrecks what was working fine.

[@4ampaul]

We opened up the battery converter box on a Civic Hybrid and it was burned out in the same fashion

[@merlinmagnus873]

Just got my stickers in the mail. Thanks AvE.

[@thepittman4g63]

Thanks for getting into ICS and SCADA. This stuff is pretty interesting to me working around that field

[@Meldrex5]

I feel like your thermal compound diagnosis is wrong. That surface of the moon pattern looks like it could easily be the result of simply pulling the two faces apart given that the goop is pretty sticky.

[@TonyFleetwood]

listenin to the beat on the radio, i got a booger on my finger and it wont let go...

[@GasNBullets]

Silicone at high temp will crystalize and shrink

[@TheTreegodfather]

If I had a dollar for every AC Tech or Lenze I've had to replace, I could go on a cruise.