RA2 rotary for M1 on a OMTECH 60w Red and black

I recently purchased an Chinese OMTECH 60w Red and Black. This machine came with the cheap rotary with the metal rollers and a NEMA 23 stepper motor. I also purchased a XTOOL RA2 rotary. The RA2 rotary came with a cable with the same 4 pin style connector that my Y axis and the cheap rotary use. The stepper drivers in the laser are YAKO Stepper Motor Driver YKD2305M-DK. All the wires coming out of the top of the drivers have labels and from what I can see, its a 24V system. I know the stepper motor on the RA2 is a Nema17. My question is, will the RA2 work with my laser or will it fry the NEMA 17 motor and/or possibly damage my laser?

The NEMA23 in the big laser can handle more current than a NEMA17. It’s motor drivers are probably set for too much current for a 1.7" NEMA.

You can read off the current from the stepper motor…

Picture is for steps/rotation, but the ‘Current Table’ shows peak allowed current.

SW1 - SW3 are set to off, on, off… that relates to 4.3A peak…

Here is the data sheet for NEMA17 and NEMA23… Remove the .txt extension…

Data-Sheet-Stepper-Motor-Support.pdf.txt

You’ll notice that Mine were set to double the max value for my motors… :sob:

:smile_cat:

Are the setting in your pictures the correct settings for the NEMA 17 or NEMA 23? mine is set to 4.3 peak and 3.1 rms already. I will have to adjust the pulse as mine is set for 3200.

The picture is actually not set for what the factory put in.

I lowered it to 2.1A as that’s the maximum (2.2 in data sheet) according to the data sheet I have. My motors would burn your fingers, now they just run warm.

I did have to lower the acceleration from 65,000mm/s2 to 48,000mm/s2. I have removed a lot of mass from the head, so I have high accelerations values…

Why are you adjusting the steps/rotation?

Which Ruida do you have?

:smile_cat:

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