jerky motion when starting
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jerky motion when starting
Hey i am having a problem with my retrofit when i home my machine it giving a jerky motion on the X axies very rapid movment in both directions i have to power off the machine . i attach the report please see how i can get some help
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- report_0627180631_2019-08-24_17-24-10.zip
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Last edited by owgstrength on Sat Aug 31, 2019 12:13 am, edited 1 time in total.
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Re: jerky motion when starting
Easy there, this is supposed to be a family friendly forum.
Stepper motors pull out very rough if the current is set too high. Is the drive current set appropriate for the motor?
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Re: jerky motion when starting
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
Please tell us what motor and drives are being used? post photos.
have the drive and motors been tuned?
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Re: jerky motion when starting
Not enough info!owgstrength wrote: ↑Thu Aug 29, 2019 9:55 pm Hey i am having a problem with my retrofit when i home my machine it giving a jerky motion on the X axies very erotics i have to power off the machine . i attach the report please see how i can get some help
Please TAKE the time to follow and supply the information in this post:
viewtopic.php?f=20&t=383
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
We can't "SEE" what you see...
Mesa, AZ
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Re: jerky motion when starting
I am so sorry i think i use the wrong word to describe the action of the machine movements i will follow the instruction on how to report
the problems. but what i wanted to say is that the machine x-axies moving rapidly in both directions as when i am tuning the axies but much faster
i am using estun servo motor and drives 2kw ill provide more information soon and photos
i am really sorry about my choice of words
Thanks
Last edited by owgstrength on Sat Aug 31, 2019 12:18 am, edited 1 time in total.
Re: jerky motion when starting
For those having trouble reading his report:
- It is an Oak system
- He is running his servos in analog velocity mode
- The PID gains don't look unreasonable, but that depends on the gains in the servo drives
If we can extrapolate from his past posts, we could probably guess that he is using Estun servos on a Matsuura machine.
If that is the case, then it would make sense to look at the tuning within the Estun servo drives.
Does Centroid support running Estun drives in pulse train position mode? If so, that might be worth trying.
- It is an Oak system
- He is running his servos in analog velocity mode
- The PID gains don't look unreasonable, but that depends on the gains in the servo drives
If we can extrapolate from his past posts, we could probably guess that he is using Estun servos on a Matsuura machine.
If that is the case, then it would make sense to look at the tuning within the Estun servo drives.
Does Centroid support running Estun drives in pulse train position mode? If so, that might be worth trying.
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Re: jerky motion when starting
I am so sorry i think i use the wrong word to describe the action of the machine movements i will follow the instruction on how to report
the problems. but what i wanted to say is that the machine x-axies moving rapidly in both directions as when i am tuning the axies but much faster
i am using estun servo motor and drives 2kw with Oak board on a matsurra vmc ill provide more information soon and photos
The machine was used after the retrofit and produce parts but i notice one day i start up the machine and try to home machine when it started behaving like that i power off the machine and power on and it work fine but it happen again
i am really sorry about my choice of words
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Re: jerky motion when starting
First step is follow TB291 for Estun Velocity mode setup. https://www.centroidcnc.com/dealersuppo ... ds/291.pdf.
Listed are some Estun Parameters related to tuning. I recommend following the link to TB234 and trying to tune velocity mode in the software.
Listed are some Estun Parameters related to tuning. I recommend following the link to TB234 and trying to tune velocity mode in the software.
This is not officially documented and supported. Some users are running Estun in position mode with success.