1200mmX900mmX170mm 4axis cnc

[Nickhofen]

Thanks guys for the input,Cropwell I think of that but the shipping cost from here to China is very high unfortunately.
Desertboy that is the first thing that came to my mind ,the other two for the Y axis to be am882h, good input about the voltage rate.
Clive now he only thing I have to concern is that when I receive the Am's and open the box from mail ,not to have two monkeys drives to jump out instead of the real thing,haha!

[Nickhofen]

I believe it is time for me to start building the power supply!
The motors I have are those:
https://www.cnc4you.co.uk/Stepper-Mo...arch=Nema%2023
And the drivers ...well you guys know!
Any diagram to follow and rate of the components for my driver's? Thanks!

[Clive S]

I believe it is time for me to start building the power supply!
The motors I have are those:
https://www.cnc4you.co.uk/Stepper-Mo...arch=Nema%2023
And the drivers ...well you guys know!
Any diagram to follow and rate of the components for my driver's? Thanks!

See this https://www.youtube.com/watch?v=4OoQ...zD30sZjtp_VyqY Joes vid is good

[Nickhofen]

Thanks Clive, I was looking for this video,it is from the first I see here at the forum, but couldn't recall who build it and took the video,I am getting old!

[Clive S]

Thanks Clive, I was looking for this video,it is from the first I see here at the forum, but couldn't recall who build it and took the video,I am getting old!

Not as old as me but if you need the list of part from Rapid https://www.rapidonline.com/NewProdu...rce=header-bar let me know.

[Nickhofen]

Not as old as me but if you need the list of part from Rapid https://www.rapidonline.com/NewProdu...rce=header-bar let me know.

Yes I would love to have it!!!

[Clive S]

Yes I would love to have it!!!

OK
1No. https://www.rapidonline.com/vigortro...-x-25v-88-0033
some people use 24-24v secondary depends how high you mains voltage is. I don't know what your supply is? for the primary

3 No. https://www.rapidonline.com/jianghai...-4khrs-59-6175

3 No. https://www.rapidonline.com/lcr-ep08...-clamp-11-3004

1 No. https://www.rapidonline.com/dc-compo...a-600v-47-1012

[Desertboy]

Test your input before buying a coil

220-240v you want ~50v output before rectified.
240v-260v (I get 252v's in which is very high) get a 45v this will give you ~70v when rectified to DC.

UK used to run at 240v and rest of EU at 220v but it was standardised almost 20 years ago at 230v in reality nothing changed because the leeway allowed on voltage meant that 240v systems fell into the acceptable performance. In Lithuania where the infrastructure has only recently been upgraded I got 230v but I noticed in Berlin I was getting 220v's as the infrastructure pre-dated the 230v regs.

I would bet Nick falls into the 220v-240v zone.

Get 2 rectifiers as they're £1 each too cheap not to have a spare even though they are super reliable, I managed to blow one up with transformer lol.

At home my voltage is ~240v at work it's always over 250v so my theory is they are pumping higher voltages to industrial sites to compensate for the much higher inductive loads on the system.

[Nickhofen]

http://www.mycncuk.com/threads/10187...ion-controller

https://www.ebay.co.uk/itm/New-500KH...0AAOSwH-daPdYA

I read Boran's thread,very good I must say.
If I understand correct ,for someone who uses two stepper motors at Y axis,like me,you can not slave one of the motors and save an exit for future use for a 4th axis,right?

[Desertboy]

I read Boran's thread,very good I must say.
If I understand correct ,for someone who uses two stepper motors at Y axis,like me,you can not slave one of the motors and save an exit for future use for a 4th axis,right?

Can't you just run the Y axis step and dir to 2 stepper drivers?

Sure there's no dual homing but with AM882's once it's square the stall protect will tell if you if it's out of square although keep an engineers square next to the gantry and it doesn't take long to calibrate.