First project - another Chinese CNC on mach3

[RouxAU]

Hi all.
here is the machine I am going to convert.
I have had it for about 4 years on mach 3 with the original XHC controller.
It never worked well from the day it arrived. Sadly, I thought it was just me but I couldn't produce 2 parts the same if my life depended on it.
After letting it collect dust for a couple of years, I decided to dust it off and put a real controller on it.

I have ordered the acorn and Pro software. just waiting for DHL man to arrive down under.

I have just built the CNCPC - Asus 8th gen i5 8400, ssd, 12Gb DDR4 - single thread is around 2300 so all good there
No touch screen at this stage - am considering XKEYS as I found the old portable MPG more useful when walking around the machine during setup. Looking for feedback on that.

I also have little to no experience with electronics but assume I will learn a lot here.
Including what the best host is for sharing pics - google photos isn't playing nice.

I'd be grateful for all / any advice from those in the know.
Deon

[RouxAU]

Another try at attaching some pics.
Sorry about the poor quality but its hard to get good shots one my phone.

Looking forward to getting this machine working again.
It also has a removable rotary axes table but for some reason, it was built using 3 axes controller and the fourth axes driver is wired to a switch ?
Not sure if this is how it's normally done?

Looking around, I assume that the leadshine schematic is the most appropriate starting point?
Deon

[cbb1962]

Deon,

I just upgraded my Chinese machine to an Acorn. (It the best CNC decision I've ever made!) I had a USB XHC controller with the exact same Fuling VFD. We should be able to help you get it all working.

Here are some tips: Document the existing connections and map out those connections to the Acorn. The schematics and all the videos on the forums are a wealth of information.

The best advice I can give is bench test, bench test, bench test. I hooked up the Acorn and got it communicating with the CNCPC. Then when on to connect limit switches, e-stops, Tool touch off, and my new servos before I ever loosened a wire on my machine. It helped me greatly.

After all the bench testing, doing the actual conversion was a breeze.

[RouxAU]

Thanks for the advice cbb.
I am trying to get my head around the bench testing.
There's a lot of lethal voltage stuff in my control box.
I guess I could remove the steppers from the machine, run the cables to the drivers but leave them connected to the 70V transformer(?) in the box.
Again - all advice appreciated.

A lot of it has been intermingled with the low voltage gear indirectly - e-stop drops power to the whole control box including the higher voltage AC stuff. From what I've read so far, this is probably bad for the BBG?

What is the common way of cutting the AC power along with the acorn e-stop input?

I also noted that I have proximaty sensors vs normal limit switches. I haven't looked closely enough yet to see if they are NC or NO.

so much to learn

[RouxAU]

Some info on the stepper drives: (mainly marketing stuff, still looking for product tech info) but the print on the unit is probably enough to work off Looking at this, the drives are set up for half current 2000 steps per rev.

1)High performance, low price, low noise, excellent stability
2)Features16Stall angle constant torque subdivision
3)Uses a unique control circuit, effectively reducing the noise, increased rotational stability
4)Maximum response frequency of up to200Kpps
5)Stepping pulse stopped more than100msWhen the coil current is automatically reduced by half, reducing the number of occasions the motor overheating
6)Bipolar constant current chopping mode, so that the same motor can output more speed and power
7)Optically isolated input/Export
8)Drive current from2.0A/Relative to6.0A/Phase separation8Speed adjustable
9)Single power supply voltage range:AC18-60V
10)Error protection: thermal protection; over-current, low voltage protection
11)Compact:YKC2608MIt is an economical, compact stepper drives, volume151 * 107 * 48mm2 Net weight0.5KG
Overview:
YKC2608MIt is a constant angle and constant torque stepper drive high-performance segments, the driving voltage AC18-60V, a single power supply. Adapter current 6.0A or less, diameter 57-86mm of various types of two-phase hybrid stepping motor.
YKC2608M-HIs a constant angle and constant torque stepper drive high-performance segments, Driving voltage AC18-80VA single power supply. Adapter current 6.0A or less, diameter 57-86mm of various types of two-phase hybrid stepping motor. With a cooling fan!
The internal drive bipolar constant current chopping mode, the motor noise reduction, click on the run more smoothly; increase the drive power supply voltage so that the high-speed performance and greatly improved motor drive capability; when and stepping pulse stops over 100ms, press Select Lock is set for the semi-flow / full flow. Pulse frequency is not only used in times of high low high segments, improve the accuracy of the stepper motor operation, reduced vibration, noise reduction.

[RouxAU]

Here's a link to the full user manual for the Fuling DZB200 series if anyone is having trouble finding it.
Full pdf version no sign up required to download.
https://www.manualslib.com/manual/82887 ... e=8#manual

[cbb1962]

This has the wiring diagram and how I set up the Fuling VFD. viewtopic.php?f=60&t=1920&p=13139#p13045

[RouxAU]

Thanks again cbb.
I missed that thread and I see you found a colour copy of the manual too.

Its all starting to make sense to me

Next task is pulling covers off the chassis an taking out the steppers. Planning on keeping these but need to work out the wiring as it is.

[cbb1962]

Start the bench testing by simply getting the Acorn to connect. Marty has a GREAT series of videos that will help a lot. viewtopic.php?f=61&t=1449

[slodat]

How's your project going?