Core XY high speed closed loop tuning

[Tech_Sam03]

Hi,

i need help tuning my XY motors on my corexy, i want to run them in closed loop. I want to run 250mm/s 10K-20Kmm² for printing and 800-1000mm/s 50K-60K for travel with 3000 Jerk. The problem now is that the pid tune for printing moves isns't good for travel moves. For now i use a p therm off 30 should i increase it or is it better to increase the A and V therm?

[dc42]

@Tech_Sam03 please post the plots from the closed loop plugin using your current PID values, showing the number of steps, the PID terms and the total error; at both your print speed and proposed travel speed.

Are you using 48V power to the motors?

[Tech_Sam03]

@dc42

Yes, i run them at 48V!

This is X axis print speed:

(X-Print)51_2025-03-18_13.50.50.csv

Y axis print speed:

(Y-Print)50_2025-03-18_13.51.00.csv

X axis travel speed:

(X-Travel)51_2025-03-18_13.51.10.csv

Y axis travel speed:

(Y-Travel)50_2025-03-18_13.51.14.csv

This is in open loop:

[Tech_Sam03]

I wanted to get in touch again. I've put the closed loop project on hold for a while and now I want to get back to it. My main problem is the big error when accelerating and decelerating.

[dc42]

@Tech_Sam03 what amount of error are you are getting when accelerating and decelerating, and is it during printing moves, travel moves, or both?

[Tech_Sam03]

@dc42

About */-~1.5 Steps of error in the closed Loop Tuning Plugin. I have set my error boundary to E2:3. I don't get any messages while printing, but I do get them when traveling.

[dc42]

@Tech_Sam03 thank you. Is this with the Pid A term optimised for travel moves or for printing moves? What acceleration are you using for travel moves?

[Tech_Sam03]

@dc42
I use a travel acceleration of 40k mm/s. I tuned it between travel and printing Speed.