I bought the cheapest VFD on Ebay. Wire it, Program it, Test it.

dawn here in florida and i might have just made the biggest mistake of my life i just bought the cheapest vfd on ebay and i did this just to see if it would actually work honestly the vfd for me is one of the greatest inventions ever it allows you to to go from single phase to three-phase use three-phase motors adjust the frequency and allow the motor to run above and below it it's a rated rpm to an extent and uh you know it's just very comfortable and easy to use uh piece of equipment for me it eliminates a lot of extra electronic garbage that just gets in the way when you're trying to hook up especially three-phase motors so anyway getting right down to it uh the cheapest vfd i could find i found on ebay and you're gonna ride along with me we're gonna open this up we're gonna uh see how it works and we're gonna hook it up and try it out and see what happens this is either going to be passable crap or utter crap let's find out okay it came packaged just like this through the mail it didn't have any other packaging so open it up here here's the book there's the vfd in there so get that box out of the way get this packing off of here get that out of the way okay all right the uh one thing i really notice about this right away is just the uh build quality of it seems pretty chintzy but uh we expect so i'm sure all the wiring hookups are under here these are obviously your main wire inputs here for your input and output so we'll double check that in the book here so the uh writing of this these uh books from china is usually pretty crappy uh let's just read this here for example it says right here for selecting mode or programming mode it is available not matter the inverter start or stop press the key for modifying parameters okay so i mean right there first sentence first page you know um luckily i've done enough of these that i've pretty much figured out what they mean when they talk on here and a lot of this that you see on here we're not going to even need or use which you'll find out here in a second so hook up on here this is a uh at one so this is going to be the wiring hookup for it very straightforward if you're using externals an external start stop switch or an external potentiometer and stuff it does have hookups for all that as well and accessing those points uh once you're hooked up is all done through uh the programming so it is pretty easy once you learn this and figure out how it works so let's uh first off let's take this cover off here there we go got the cover off and yeah there's your inputs your ground on one end that would be your 220n and these would be your three phase out so let's go over on the bench and see if we can about hooking this up okay so what we have here is a dayton three-phase industrial motor and it's a one horsepower uh 1725 rpm where is it on there right there okay and we're going to use the 208 to 230 volt hookup here so lines i'm hoping that's in focus four five and six will be locked together and then lines seven and one will go to line one on your three phase line eight and two will go together on line two on your three phase nine and three will go together on line three on your three phase and if we look down here i've already pre-wired this here so uh these three here these are the three to go together these are uh four five and six so they're locked together of course your green this is your ground line going straight to chassis so that's a no-brainer uh if you got line line in here uh that would be uh let me read it here two and eight it's actually written right on here t2 and then it says eight on there same thing here same thing here we got uh seven and one no seven and one and this is uh nine and three and it's written right on the wires so you just put your your lines one two and three on like that that's your ground and then lock these three together that's all there is to wiring the three-phase there's there's really nothing to it okay so uh now we're gonna wire to the vfd okay so i have a 250 in line here this is my green of course is your ground that's your hot neutral if you look on here that's your line in neutral so we're gonna put line in here and the second one where it says line get that in there and lock that down and then your neutral goes right next to it here looks like i need to loosen it up just a little bit probably a little over a kill on this wire here but this is just my test cord so and then we're gonna bring over our three-phase power in and uh it'll be it really doesn't matter which order this goes in on the three-phase side that's that's the nice thing about it if you find yourself in in reverse of where you want to go you just switch to the lines around say the black and the red and that would get you going the opposite direction um with these vfd here this one here anyway has a forward and reverse it doesn't matter unless you specifically want forward one way on that line so and then your red goes in here i like the way they they put these screws down in the cage so if you accidentally knock one out you can never retrieve it without disassembling the whole thing or shaking it around for an hour double check these wires and then we're going to take our grounds and we're going to hook these together here so and this is just a temporary wiring this is just to test the bfd on the motor and then we'll later on we'll put it in the uh we're going to use this on the saw we'll put it in the saw and uh see how that goes okay we'll make sure none of my wires are stranding out and touching in there which is a big no-no i use what's called led wire or led cable it's it's a three strand you can get it two three four strand whatever you want and it's real fine line and you would use that to hook into here because you have reference voltages you have a five reference and a 12 volt reference and then those reference voltages would allow different functions on here like an external switch for forward and reverse first start stop things like that so i'm not even going to use those so they're not going to matter as far as the wiring we're actually all done now so now we've got to go through the programming and i went ahead and marked out what's going to be important on the programming here in blue anything below this red line here unless you're using alternative inputs and outputs and you need to program them you don't need if you're going right off the panel up to that point is all you need and you don't need every single one of these parameters because some of them are already set for you like this one here your maximum voltage it's either 220 or 380. okay that's already set for you you don't have to worry about that so we would go straight to p01 uh the default setting for this is is 50 hertz we're we're powered off 60 hertz so we'll change that to 60 hertz i don't really know what they mean by these intermediate voltages here i guess these might be if you're using a a stepper or something on it you know stepping up and down like you would down here on the cnc stuff i go right straight down here to maximum operating frequency which will change from 65 to 90. the minimum operating frequency i want it to start at 30 hertz not zero so we'll start that at 30. this is password stuff that doesn't matter we come over here uh breaking time is already set to half a second which for the saw might be a little low but i'm just going to leave it there for now for testing i can always come back and change it uh brake voltage all this here is fine i don't care about that operating arrival anytime i see 50 hertz i'm going to change it to 60 hertz so i'm going to change that over temperature is already set to max so i'll leave that revolutions at 50 hertz we're changing it to 60 hertz that's about it that's all i really need uh for setting so we've got one two three four five settings we're gonna make so let's do that right now okay so she's on it says our frequency is set at max at 65. we're gonna back that down to zero okay so what we're going to do is we're going to program go to p01 and it's set at 50 we're gonna drop run this up to 60 hertz because that's what we're coming off of on the wall here come on it must be a little bit difficult here all right i'm gonna save that let's move all the way up to po6 now and we're going to program po6 uh maximum operating it's set at 65 we're going to run this up to 90. actually let's set it at 80 for now i can come back just to speed this up i'm just showing how this is set up okay i'm gonna save that goes on to po7 which is uh minimum operating so we're gonna program that up to 30. come on don't want to start at zero that can get kind of hard on the inverter and the motor you really don't need anything below 30 for the most part unless you got a really powerful motor and you're not pushing a lot nine thirty okay i'm gonna save that and that automatically goes to po8 i need to jump up to uh p18 so p18 we're gonna program that to 60 hertz come on 59 60 okay we'll save that okay so now we're all programmed i this allows us to go from 30 to i set it to 80. i can change it back to 90 if i want so let's go ahead and see if this runs we're in uh forward here so we're going to go ahead and hit run and there she goes change the camera angle here so you can see the motor okay so let's go ahead and see how she speeds up here [Music] [Applause] okay there's 60 hertz right there that's normal operating speed of 17.25 okay little shaky getting up there you may have to get in there and and uh clean that she's coming right along there 80. she likes 60 let's see what she does when i hit stop okay nice clean stop okay we're gonna change it to reverse and run it yeah she goes in reverse direction and she runs right up to 60 because that's where we had it preset and now let's say i was running my band saw here and i was cutting say real mild steel and i wanted to cut something a little bit harder i could just turn this down same thing on your lathe if you want to turn down your spindle speed and i don't like dropping it below 30. [Music] see if she'll do a forward reverse on the roll here [Music] oh yeah just like that which might be dangerous on a saw [Applause] she runs real smooth at 60. that's nice [Music] i'll probably set this up to 90. so let's see if she does does a change of speed at 30 for us without binding up oh yeah there she goes [Music] let's do a clean stop from 60. and restart okay so we got our vfd all hooked up and going i'm going to go ahead and get everything mounted up on the delta band saw and then we're going to really put it to the test see if she can handle uh working under a load so let's go get that done and see how it goes okay so putting this together was pretty easy i just took a piece of uh three quarter by half inch bar stock and i cut it to uh dimension and that would have been 0.371 by uh 0.590 and i think the total length on this and this isn't really super important uh 2.8 this piece here where it mates into this notice it's offset of the cam wheels and that's because this piece here where it comes through if you look carefully comes out actually forward of the blade so those cam wheels to have them centered are offset on that pad so when this goes in then it's going to be offset like this and that's what's going to allow us to just in and out on the wheels the wheels themselves or the cams in the wheels i simply took a piece of one-inch round stock and i turned a hub on it so that the cam wheel can sit down on there like this and then just a number 10 with a washer behind it holds it in place okay and then it just goes on like this and it will cam over on the screw and notice the screws are inset so and that does lock on there really good once it seats so don't tighten it up till you've got it in place and see notice that it cams over like this and this is what allows us to adjust into the blade there we go okay and then to get it adjusted you can move it in and out like this okay i haven't made up an adjusting screw yet so i'm just using this bolt right here to lock it where i want it so right there is where i want it for right now and then you can lock the depth in place like this and then you can rotate or cam over your bearings like this to where you're just starting to make contact and tighten them one and two right there so now we have a perfectly viable guide just barely touching same thing back here just barely touching okay so we got our motor all hooked up and belted up and our vfd on there so starting the vfd off on 30 hertz just to start it okay and i've been over here cutting up a little bit of aluminum just to see what she'll do and it seems to be running really well off the bfd so one thing i did want to point out is notice that the belt is running backwards it's running counterclockwise while the drive shaft is running clockwise that's because we we took that other gear out of there that would have turned it the other direction we're driving it directly with the belt inside it's nice and quiet nice and quiet i'm real happy with that so i've i've got this uh surface feet per minute tachometer here and when i put it on right there we're running it about uh 218 surface feet per minute and i've got it set on the second uh pulley setting uh this is actually a good setting right now if i bring it up to 60 parts it comes up to a little over 300 as we go up it goes up to 400 and it ends at 400 on the second belt setting if i go to the third belt setting then i can get it up to about 500 on the first belt setting it's actually ideal for steel so we're gonna cut some aluminum here real quick just to show you how well this works [Applause] okay right through it like butter now i've only been practicing with uh aluminum here but i want to try some mild steel so okay so starting it on the first belt setting at 30 hertz she's turning pretty slow right here and with the attack on here we're turning about 90 surface feet per minute okay we're starting at 30 hertz about 90 surface feet per minute and as we bring it up okay at uh [Music] 50 hertz we're at 150 bringing it up bring it up bring it up at 60 hertz we're at 200 surface feet per minute so i'm going to drop this down just a little bit and we're going to cut it at uh just cut it at 150. this is 150 surface feet per minute and let's see how this does [Applause] [Music] [Music] okay went through there real nice so let's re-belt it and try some wood okay so when i rebuilt it i have to pull out this lever here so i can disengage the reduction box here and i have to change the direction of the vfd to forward so now we're we're moving the motor forward and when i run the tach on this at 30 hertz it's only 870 surface feet per minute i don't know how fast wood is supposed to go but i know it's not i'm pretty sure it's an awful lot faster than that i don't do much wood work and when i turn this up to we turn up to 50 hertz and she's shaking around a little bit i put some feet on it and okay there's 50 hertz i put some feet on and at 50 hertz it's that uh just shy of 1500 surface feet per minute so i think that's probably plenty and i've got this uh plank here that i was fooling around with so we'll try this that chomps that out like nothing okay a couple things i i did on this i i knocked out this aluminum uh plate here i'm gonna make a stainless one and put a stainless in here instead i i don't really like that i mean it's okay but i'm gonna put some stainless in here the vfd uh even under load seems to be working just fine so i'm pretty happy about that covers i'm i like this all open but i probably i'm thinking of making a latex or an acrylic cover for this just so i can see the wheels i've got the tin work over there i just think it looks nice out in the open like this so i don't know we'll see yeah this just continues to be a uh work in progress but i think that's about it all that i'm going to show on this i have to move on to other things so um okay so i guess that's just about it this video was to determine whether the cheapest vfd on ebay could do what it's supposed to do and that was drive this one horsepower saw this is a one horsepower vfd one horsepower motor um obviously it works works both both in forward and reverse works through the frequencies so i should be happy what you all didn't see was this i bought two vfds two of the cheapest vfds you could get i bought them in a pair because i'm actually doing another saw just like this on the side as well and this vfd i was working up i was testing it on the motor uh just to make sure i knew all the parameters and how to to program everything with this particular vfd before i actually filmed it on the fourth start this one went blam and blew out and it's no good this is junk luckily i had this second vfd and this is the one that we've been uh working on throughout the video i contacted the vendor the vendor is a little bit slow about getting back to me but he did tell me that he has another vfd on its way he sent me a tracking number this morning so hopefully the third cheap vfd that i'm getting his replacement for this one will work out fine as well we'll let you know further on down the road this saw i'm going to put into service i have obviously some you know small touch-up things that i have to do still that you're not going to see on video but i am going to be be using this saw and so if you keep on watching you will find out about any updates on this vfd whether or not it holds up so with that i guess that's about it the heat and humidity out here today are just horrendous so uh we're gonna wrap this up uh thanks for watching and as always from florida dawn out

Channel: Don's Engine

Views: 10,433

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Id: dE5E06qgdrc

Length: 27min 37sec (1657 seconds)

Published: Sat Apr 09 2022