/diy/ - Do It Yourself

>>2513095
Buy a phase converter is the answer. I didn't read your wall of text but a phase converter will do what you want done. They're not cheap but you maintain usage of all the features on your machine that way.

>>2513101
A VFD can be used to convert a motor from 3-phase to single phase, and is much cheaper and more compact than a rotary phase converter, which is why I’m asking about them and not phase converters.

>>2513107
>cheaper
You need to double the rating of the vfd since you're using single phase input so if your motor is 3hp you need a vfd rated for atleast 6hp. Since vfds don't come in custom sizes that means you may need a 10hp vfd, might want to check if this is actually cheaper

>>2513095
You can get an electrician to install a jump panel that takes the 240 or whatever you have in your house and jumps it to whatever you need.
It uses more power that way, but it's the cheapest

>>2513095
>3phase
>voltage in VDC on nameplate
Uhh anon? If it's VDC for the motor it's not 3 phase

>>2513095
Wait if you're thinking of using a VFD as power supply to your machine then no it won't work they are designed to run motors, you'll likely have it tripping out from faults

>>2513150
I’m having trouble finding the HP for this specific motor, but I know most industrial sewing machine motors are under 1hp.
I think the electric clutch motor on my other machine is only 1/3hp, but this one is a servo motor.
There are a number of VFDs like pic rel that say they are 2hp, but are they all the same chinkshit?

>>2513153
I think the controller switches it from AC to DC? Idk
It’s definitely 3-phase tho
Pic rel is the plug
>>2513159
The sewing machine is powered by a servo motor under the table
Juki DLN-5410-6 is the machine.
Pic in OP is the ID plate on the motor

>>2513167
Sorry man vfds need to be hooked up to a motors windings directly, it's not going to work powering a servo controller
>automation tech who's worked with vfds for 15 years

>>2513172
Well damn, guess I’m buying a new single phase motor then, cuz phase converters all look to be north of $500

>>2513175
Well removing the servo controller and switching it with a different motor isn't easy either, you're losing speed control and will need contactor and control circuit for Turing it on and off
I'd recommend just going with the phase converter since it's the easiest solution

>>2513178
Sewing machine repair guy I’ve been talking to gave me the $180 price for one I used in OP.
They are all pretty self contained, and it’s common for people to upgrade to them from old clutch motors.
It would just be a basic unit and won’t have all the automated features I was hoping to retain by going the VFD route, but oh well
https://youtu.be/Dx_rS9Fzvfo

We had to do this exact thing to an old juki sewing machine. If yours is like ours is, then you can buy a single phase motor for it. Sewing machine motors are not your typical, ordinary motor. They are called clutch motors I believe, because they idle at full speed but the output of the motor shaft depends on how far you have your foot pedal rocked forward or back.

>>2513189
>>2513193
Ah cool didn't know this, godspeed OP

>>2513167
>>2513189

OP, nice machine! MYOG? I just bought a fucking mint Consew 2206, just kicking off sewing.

I agree with your tech, replace the motor. Consew has some cheap servo motors that work great and you can install yourself, but it may help to pay some old hat if they're local to help get you started as some machine settings are difficult to troubleshoot all at once without experience.

Skip the VFD, get a servo motor, go about your business. What automated features are you going to lose? FYI you can buy aftermarket needle positioners.

>>2513095
there are 110v to 220v 3-phase VFDs (teco L510 comes to mind, probably $200) but as another anon said, no controls between VFD and motor or you're fucked and it sounds like there's lots of intermediary controls and such

>>2513237
Did some more research. OP, you don't need the 3-phase for sewing. Get a replacement servo motor and go. It'll have an arm controlled by the petal for speed.

I can't find info on the 6 model, let us know what options you have on the machine and the power input to each please.

>>2513237
>>2513482
Some of the features I would lose would be
>programmable auto-lock stitch
>auto foot lifter
>auto thread cutter
>needle position
Those features IMO aren’t worth the $500+ of a rotary phase converter or $700+ for new 3-phase wiring installed.
A new, simpler servo setup for $180 is the most economical option with a VFD not being an option, unless there is some kind of phase converter that is cheaper I’m not aware of?

>>2513782
How badly do you need those settings? Is this your first machine? You may be able to do without all 4.

You can get aftermarket needle positioners (if you need)
You can use a knee lift for the presser foot (if you need)
You don't need the auto lock stitch, for most applications manual is preferred
The auto pressed foot lift is cool, now I have it I love it but it can be done without and there may be a way to custom retrofit it. Reverse engineer from the solenoid or control mechanism, and wire a power source in thats controlled by the petal being pressed "up". If this doesn't make sense, of yours not electrically inclined, skip it.

Not sure where you're located but in the US you could sell this machine and buy something similar and working, for as much as it'd cost to get this working. Would skip a lot of hassle in conversion. But aye, what you said is true - a servo motor would get you going easily. The Consew one is cheap and ready to go with your pedal. And your handwheel can be retrofit for the needle positioner, and you may have to find a knee lift for that model.

Depends on location, cash to spend, and end sewing goals. Happy to keep sharing thoughts. I'm no sewing expert, they seem to be hard to find so I'm sharing what I know. Keep after it my man, these machines are very capable no matter the features, and making your own stuff is very fulfilling and frankly useful.

>>2513812
Yah I can do without all the automated features, I was just hoping to retain them.
I have a Pfaff 118, but the only thing I like about it is that it does zig-zags.
The feed dogs are so wide I can’t use a zipper foot cuz even the wide on one side ones aren’t wide enough to apply any downward pressure on the feed dogs.
Tl;dr I want an industrial needle-feed machine and this is the only used one I can find within 100 miles of me
>pic rel is the machine I use most