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Isel CPM3020 cnc machine - electronics rebuild

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PK:
The nice thing about the better drives (like the ones in the G540) is the amount of protection they have.
A broken wire to the motor, a short, an over voltage etc won't destroy them where as all of these things will reliably pop a cheap drive.

Add in step dithering and micro to full step morphing and they really are noticeably better.  My mill has a Gecko drive on Y and that axis is faster than X (same motor, same voltage) and smoother at low speed.

I get that the cost is a big consideration, and I'm not trying to bash anyone over the head with this. Just thought it worth including in the discussion.

John Stevenson:
The last generation of Leadshine drives also has the full step morphing and they also do closed loop steppers in either standard DC or three phase AC.
The three phase AC are virtually servo motors but without the hassle.

philf:
Chris,

Have a look at www.estlcam.com.

Estlcam is a 2d/3d cam package but it also includes a CNC control to drive your machine directly (no need for Mach3 or LinuxCNC).

It uses an Arduino via a USB port to interface your PC to your CNC machine. All the Arduino programming is done automatically from within Estlcam.

A license for Estlcam is only 39 Euros!

Cheers.

Phil.

PK:

--- Quote from: John Stevenson on January 15, 2016, 04:30:53 PM ---The last generation of Leadshine drives also has the full step morphing and they also do closed loop steppers in either standard DC or three phase AC.

--- End quote ---

Didn't know that.. Good to hear.

--- Quote ---The three phase AC are virtually servo motors but without the hassle.

--- End quote ---
Yeah, I got some NEMA23 three phase motors with a laser XY table kit I bought a little while back. I did a double take at the cables then went and bought the drives. Really looking forward to seeing how they go..

raynerd:
Phil, I`m in no doubt that I`ll crack on and upgrade the drivers and have a more 'professional' system using Mach3 - however, I think I may well order the Leadshine drivers from China and in the mean time, I`d like to give Estlcam a go especially since I have an Arduino Uno kicking around somewhere, it won`t cost me a bean. However, to use it, I guess I`ll have to identify the step and dir for each motor - but after staring at the large board, I`m not sure what I'm looking for or where! Based on my previous experience of CNC, I think I`m right in remembering that there was a step, dir from the BOB. However, this is running serial cable in with only three wires from the PC output and then if there is a BOB built into the motor, no idea where to look.

Anyone any idea where I would tap into step and dir ? 

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