Stepperonline A6 - How to properly Tune them?

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28 Jul 2025 08:54 #332461 by Luc1luc
Hi there,
a friend convinced me to go the Ethercat way. I got A6-400W-Ethercat Servos.
I followed the "How to use A6 Servomotors Software" guide by OMC but after the "Auto-Tuning" my Servos or better to Say the Couplers are still movable by Hand. If i increase the gein when Tuning, it starts to play airhorn.

Could someone maybe advise me How to properly get started?

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31 Jul 2025 11:48 #332593 by SwitchWitch
Replied by SwitchWitch on topic Stepperonline A6 - How to properly Tune them?
You mean, that you didn`t tune your Servos at all?
In my world a Servo need to be tuned connected to the machine and the load it has to work with to work properly and performant.

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08 Aug 2025 19:00 #333056 by Kieran
Im in the same boat, going to need to tune my a6 servos soon. did you get the tuning software to work? I havnt messed with it much but I couldn't get my win10 desktop to talk to the servo drive. I will have to fire up my laptop, as my desktop now has win11. Im kinda hoping there is an easy way to send parameters to the drives through the linuxcnc computer through the ethercat. I will say I have messed with a Haas VF11 mill, and I was able to move its big y axis ball screw by hand a few degrees. I dont think you can really get rid of all the "mushyness" in a servo.

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14 Aug 2025 06:32 #333383 by _skinner
Replied by _skinner on topic Stepperonline A6 - How to properly Tune them?
in many cases autotune broke parameterisation, for example Siemens s120 with their servos working like a charm, but if You use third party supplier of servos, just be sure You are using parameters delivered by Your supplier of servo, if supplier have not parameters for Your driver, don't take it, auto tune mostly broke settings, same manufacturer of drive and servo have to work, but i think it can be price reason (in comparison to Panasonic MINAS A6B for example)

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16 Aug 2025 17:23 #333521 by Luc1luc
Replied by Luc1luc on topic Stepperonline A6 - How to properly Tune them?
Until now i didnt find any solution

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25 Aug 2025 13:29 - 25 Aug 2025 14:09 #333902 by Martin.L
Replied by Martin.L on topic Stepperonline A6 - How to properly Tune them?
You can download the software in the same page where you buy them. I throw this here because someone will need it, they removed it from the product page:  software stepperonline OMC A6 help.stepperonline.com/en/article/how-to...series-servo-edqavw/

I still don't get how to auto tune them even if there is an autotuning section inside the software.
Oh and try different USB cables, some doesn't just work, the software is straight on if the servo is usb connected it recognize it if you select the right port of your computer. Please update here if you succesfully auto tune them and explain. Thanks
Last edit: 25 Aug 2025 14:09 by Martin.L.

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06 Sep 2025 12:23 #334547 by Martin.L
Replied by Martin.L on topic Stepperonline A6 - How to properly Tune them?
I don't get it. I meant they removed the software from the product page, now it's elsewhere..
If you mean they are crap quality, wich ethercat servos you suggest at this price point?

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22 Sep 2025 04:12 #335263 by ihavenofish
Replied by ihavenofish on topic Stepperonline A6 - How to properly Tune them?
autotune usually has a global stiffness setting. So for example with my omrons, a setting of 15 is pretty soft and would wiggle as you describe, 20 is pretty decent if you have lower dynamics, and 25-30 is super stiff tracking.

So, assuming the software is doing what its meant to do you simply might not be ably to get the stiffness you desire with your machine and motor and acceleration combination. Your machine may just have too much of an inertia load and you might need a larger servo.

Once autotuning does its basic job, and you find that its not quite as good as you'd like, you can use then "go form there" with some manual tweaking of settings. I had to do this with my Y axis with my omrons, but the x and z were "perfect" after autotuning.

I got one of these coming tomorrow for testing.

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