Different movement on X and Y

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28 Mar 2022 02:06 #238503 by bpark
Hi Forum,

I have very interresting issue and would like get help from someone who may already have good experience.

Situation,
- X and Y is being used for same model of NEMA 34 and driver and same microsteps and configuration.
- X's Pncconf's test move table as it is but Y's Pncconf's test move not exactly as it will be
- after various combination of configuration params for Y, I cannot solved the situation.

One of my final test is chinging connect path
from X driver - X motor (move distance correct), Y driver - Y motor (move distance incorrect)
to     X driver - Y motor and Y driver - to X motor
and turn out Y's move distance still does not correct. 

by assmuing Y may need more torque, so I changed microsteps to low from 20(4000 sptes) to 8 (1600 steps) but it also does not works yet.

Would be great if someone share experience or any clue to make it correct.  
   

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29 Mar 2022 21:25 - 29 Mar 2022 21:26 #238662 by andypugh
Despite what you can read in many places, lowering the microsteps does _not_ give you more torque.

What voltage are you running the motors at? What is the rated current of the motors, and what are your drives set to?

Does the Y motor need to move considerably more weight by any chance?

is there any scope for changing gear or belt ratios?
Last edit: 29 Mar 2022 21:26 by andypugh.

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30 Mar 2022 04:34 #238690 by rodw
Replied by rodw on topic Different movement on X and Y

Despite what you can read in many places, lowering the microsteps does _not_ give you more torque.
 

Andy, Thanks for confirming what I always thought but nobody else believed!

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