Thread: Motor tuning and switches
Jazz, that was an excellent explanation and it couldn't have been more clear, concise and illuminating - you should write a book, seriously.
Just so I know, how would you describe the observable characteristics of a motor which is running "rough" as opposed to one that is running well?
In the Motor Tuning window of Mach3, should the "step pulse 1 - 5 us" and the "dir pulse 0 -5" be left at zero? How do those values affect performance.
Thank you for such a great explanation - it's cleared up a myriad of questions - and created a few more
Last edited by glynster; 14-03-2015 at 12:12 AM.
Nice running motors will have higher pitch hum and smooth action. Running a motor at really low speed ie 50mm/min for test is a good indicator. Nicely setup motor will smoothly turn, rough running will have a notchy action.
The machine and how it's built can play big part in how motors react with different micro stepping . Resonance of the machine affects how motors work and different frequency's don't always suit some Micro stepping settings so it's not uncommon for higher settings to work worse than lower settings or vise versa.
It's all about finding a balance that works best for your machine. To be honest with newer Digital drives Resonance is becoming less of a issue has they are so much better at handling resonance. But not so long ago with old analog drive technology resonance could reduce a motor to perform at half it's capabiltys and for people to not even know they had a resonance issue at all.!! . . . To a trained ear it was obvious but not so if your not aware of resonance.
If you want to experiment and get a feel for how Micro stepping and Resonance affects your machine then play with different MS settings and tuning. This way you'll find the sweet spot that suits your motors.
Resoance is also one reason why you can't run or tune a motor on the bench. It's very common for motor just sat on a bench to sound like a bag of marbels and jump all over the place but run sweet when bolted down.!
Last edited by JAZZCNC; 14-03-2015 at 01:03 AM.
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