Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: stroker on October 22, 2025, 02:24:28 AM

Title: Help required on Converting a RichAuto A51 controlled 3 axis router to Mach3
Post by: stroker on October 22, 2025, 02:24:28 AM

Hi,
I inherited a 3 axis CNC router that was originally controlled via a RichAuto A51 hand held control that has failed for the 3rd time.
So, I hope to be able to replace the original control with a PC and Mach3.
I already own a small machine that I produce parts on using Mach3 that is installed on a desktop WinXP machine.
I am conversant with G code programming, tooling etc., but my expertise is almost non existent when it comes to building a control 'from scratch'.
Has anyone the necessary information on how to complete the modification or could perhaps provide me with the necessary links to sources that provide the information?
I have sufficient resources at hand to perform the electrical connections and I'm happy to purchase the details if required.
Many thanks in anticipation of any replies and assistance.   

Title: Re: Help required on Converting a RichAuto A51 controlled 3 axis router to Mach3
Post by: arturod on October 24, 2025, 12:53:32 PM

Check out this wiring diagram for upgrading a Richauto to an Ethernet Smooth Stepper with a C25XP:https://www.cnc4pc.com/blog/post-4/upgrade-richauto-to-a-c25xp-66

Title: Re: Help required on Converting a RichAuto A51 controlled 3 axis router to Mach3
Post by: stroker on October 27, 2025, 02:54:24 AM

Thankyou very much.

Title: Re: Help required on Converting a RichAuto A51 controlled 3 axis router to Mach3
Post by: firewoodcheery on October 29, 2025, 04:27:58 AM

Quote from: arturod on October 24, 2025, 12:53:32 PM

Check out this wiring diagram for upgrading a Richauto to an Ethernet Smooth Stepper with a C25XP:https://www.cnc4pc.com/blog/post-4/upgrade-richauto-to-a-c25xp-66

Thanks, Arturo. That’s really helpful.
Quick question — can I reuse the existing stepper drivers with the ESS/C25XP setup, or do they need replacing?

Title: Re: Help required on Converting a RichAuto A51 controlled 3 axis router to Mach3
Post by: arturod on October 29, 2025, 06:45:24 AM

Yes, it is just a matter of replacing the motion controller.  All the components remain the same. 

Note that you will have to change the configuration in the VFD to take the variable speed, as the richauto does not handle variable speed, but just a set of fixed speeds.

If you need a hand with this, you can open a ticket in our website and we will help you: https://www.cnc4pc.com/contact

Arturo Duncan
https://cnc4pc.com