Electronics for New Machine + Chinese Spindle + VFD

[mturneruk]

Those motors would perform so much better if they where run with 80vdc drives using 68Vdc Unregulated PSU using Capacitors.

Thanks again Jazz. Amazing help. To be fair to CNC4You they haven't sold me or advised me anything yet. I am just trying to work out what I need by looking at their website, and i see they sell a kit with these bits in so I thought that would go with that. I have already bought my 4NM steppers so I am looking for digital drives and a decent PSU to go with them.

They do sell these, but they are a bit to expensive for me..
Do you think i would get away with a 50v PSU and the drivers I said before.
EDIT : Sorry - Just read your post again. No basically.

Thanks for clarifing the VFD power switching. I just want to be able to turn off everything when i've finished using the machine. Not during a cut or with the machine running.

How long have you been CNC'ing ?
Best
Martin

[JAZZCNC]

How long have you been CNC'ing ?

Million and one years.!! . . .Or so it feels. . .Lol

If you want excellent drives at sensible money look for Leadshine AM882 on Aliexpress.
Best option with power supply is to build your own using toroidal transformer, Bridge recitfier and Capacitors has it will work out cheaper and exactly matched to your system.
Failing that then buy something like this which is exactly the same thing but twice the price http://www.zappautomation.co.uk/elec...er-supply.html

[mturneruk]

Million and one years.!! . . .Or so it feels. . .Lol
If you want excellent drives at sensible money look for Leadshine AM882 on Aliexpress.

I think i'm getting in over my head here Jazz. Just added 4 Leadshine drivers and a power supply as you specified to my basket on Ali Express and it's coming out at $657 shipped. There is no way i can afford that. Plus i would still need a motion controller. Don't really want to get into building a power supply. My electronics skills and my time is fairly limited.

I am wondering if i should send the 4 NM motors back and go for 3.1 NM motors and run on 50V. Seems to me the price of this kit is linked to the voltage / Torque. That would still be a big upgrade over what I had before.

I want to cut aluminum and hardwood.

[Clive S]

I think i'm getting in over my head here Jazz. Just added 4 Leadshine drivers and a power supply as you specified to my basket on Ali Express and it's coming out at $657 shipped. There is no way i can afford that. Plus i would still need a motion controller. Don't really want to get into building a power supply. My electronics skills and my time is fairly limited.

I am wondering if i should send the 4 NM motors back and go for 3.1 NM motors and run on 50V. Seems to me the price of this kit is linked to the voltage / Torque. That would still be a big upgrade over what I had before.

I want to cut aluminum and hardwood.

Try here http://www.aliexpress.com/item/inSto...rchweb201560_1


Re the VFD and switch just to clarify NEVER put a switch in the cable between the VFD and spindle motor as this would wreck the VFD if you turned it off.

[njhussey]

I think i'm getting in over my head here Jazz. Just added 4 Leadshine drivers and a power supply as you specified to my basket on Ali Express and it's coming out at $657 shipped. There is no way i can afford that. Plus i would still need a motion controller. Don't really want to get into building a power supply. My electronics skills and my time is fairly limited.

I am wondering if i should send the 4 NM motors back and go for 3.1 NM motors and run on 50V. Seems to me the price of this kit is linked to the voltage / Torque. That would still be a big upgrade over what I had before.

I want to cut aluminum and hardwood.

It won't matter if you use 4 Nm or 3.1 Nm motors, they both need that same higher voltage to get the best performance. Making your own PSU is really easy, if I can do it so can you as I'm a complete numpty when it comes to electronics As Dean says a toroidal transformer (Airlink transformers is a good place) a rectifier and some capacitors and you're sorted. We'll all show you how to do it, if you can strip wire, solder and crimp connectors on wires then you're sorted that's all the skills you need!

[mturneruk]

Thanks Neil. I can solder and crimp!

Is there any kind of numpties wiring diagram for making one of these?
Thinking I may also need 12V in my control box for the motion controller. Would the PSU your talking about making be able to supply that as well. Or would I need a separate supply for that?

I have seen circuit breakers in other peoples boxes. Is the breaker in my consumer unit not sufficient?
I would also be running my kit on a normal 13Amp house ring. Does that still work?

Sorry to be a complete newb.
Thanks Neil

[mturneruk]

Hey guys. So I have decided to go with the easy solution from CNC4YOU. They have not done me wrong yet. I know it means that I will not be driving my motors at top speed, but it's simple and I understand it. I will be able to run at 2 - 3 m / minute which is adequate for what i need.

I'm going for a UC300 motion controller which i know works, breakout board, 600Watt 48V power supply and CNC4YOU CWD556 drivers which CNC4YOU actually designed and they guarantee it will work nicely with that power supply. May not be the best solution, but it's affordable, in the UK and guaranteed.

Thanks for all your help.
Martin

[JAZZCNC]

I will be able to run at 2 - 3 m / minute which is adequate for what i need.

You may think that now but if your cutting woods or plastics I guarantee you that your cutting it wrong and 2-3mtr/min isn't nearly fast enough and you will want more in the future.!!

I understand your relutance to shop outside UK but honestly there nothing to fear and the AM882 drives blow those Drives away on performance. Also if your planning on using a slaved axis setup then they have Stall detection feature which is something you'll wish you had the first time one motor stalls and the other keeps on going turning your gantry into twizzler..

I could continue with other reasons why to not go with that setup but you seem to be settled so I'll leave you to learn your way.!! . . . I'll just leave you with this thought WE are not trying to SELL anything with our Advise or Recomondations.?

[dodgygeeza]

Who told you that they designed the CWD556? I can tell you that these are just copies of other copies of leadshine drivers, and the most that they designed was the label that they had printed onto the driver.

Hey guys. So I have decided to go with the easy solution from CNC4YOU. They have not done me wrong yet. I know it means that I will not be driving my motors at top speed, but it's simple and I understand it. I will be able to run at 2 - 3 m / minute which is adequate for what i need.

I'm going for a UC300 motion controller which i know works, breakout board, 600Watt 48V power supply and CNC4YOU CWD556 drivers which CNC4YOU actually designed and they guarantee it will work nicely with that power supply. May not be the best solution, but it's affordable, in the UK and guaranteed.

Thanks for all your help.
Martin

[Steve-m]

Hi Guys
I wish i had found this thread, before i started buying bits for my Isel 2018 conversion, I have spent a few hundred this week and after reading this for first time im regretting 90% of it, I have working steppers on machine and today removed them to replace for ones with wiring colours i can make parallel, I have 8 wire ones now but dont know enough to guess at where wires go

Steve