Electronics for New Machine + Chinese Spindle + VFD

[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

[mturneruk]

Hey guys. I bow to your superior knowledge.
However I went with CNC4YOU for the following reasons.

1. They have really good documentation and clear wiring diagrams which i understand.
2. They are in the UK. I can phone them if I get stuck.
3. They give me a proper guarantee, not some promise in badly written English with RTB warranty which makes it not worth it anyway.
4. They ship next day. I will have it all tomorrow.
5. I understand the UC300 and I know it works. Also I can try out their mach3 alternative which looks good. I am hoping to get the 0-10v working at some point, but not critical.
6. I can afford it.
7. I won't get stung for import duty. Last time I ordered £500 of RC kit from China, I had to pay £100 import tax, and I decided then not to do that again.

I was very tempted by the pokeys 57 CNC, but I think it's quite new and I could not find anyone selling it in the UK.

Have you ever had a stalled Axis?
I never had that on my last machine, and I never even knew that was possible until you just mentioned it.
I can see that it would be bad on my new machine. It's looking really heavy duty and it's going to weigh a ton.
Going to need a stronger bench!

What speeds do you run at when cutting ply or similar?
I thought 2m per minute was fast! I am hoping to be able to make 5mm deep cuts per pass in pine with a 6mm cutter running at about 2m per minute, and cut 3-12mm aluminium (Don't care how fast).

So once again thanks for your help. When my machine blows up you can tell me you told me so.
Cheers
Martin

[mturneruk]

Hey guys.

Any chance I could bother you for your input again.
Worried about my enclosure being to small, and getting EMI noise problems.



1. Is the VFD in this enclosure a problem?

Motion control and Breakout board would be mounted on a shelf above the drivers.
I have bought belden shielded mains cable for mains wiring within the enclosure.
I will also use the shielded belden cable for connection to the spindle - Should it be grounded both ends i have read contradictory advice?

2. Should i be using shielding the power / signal lines to the stepper drivers from the transformer / breakout board within the enclosure ?

3. Does my grounding look right in the schematic ?

Thanks for any tips.
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