motor-0-position error beim Abbremsen aus 4-7,5 m/min

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1 year 6 months ago #327374 by Muftijaja
Chaka!
Today I tested the new i7 Tiny PC Lenovo m910q with previously shown pings and latency, and the machine seems to work fine. Ok, I just made an air milling over 10 minutes, but the whole code went through without motor-position errors. I tried full G0 with 7,5m/min and normal milling feeds with 3,5m/min, no errors anymore.
BTW- WLAN connection was active during the process, without activity, but former constellations had bad influence on ping and latency.
I hope, this is my final post regarding latency and pings. I learned a lot about settings.

Big Thank you to all of you for sharing your knowledge and for helpful comments!
Happy greetings, Hanno

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11 months 1 week ago #338801 by Muftijaja
Hi rodw, Im sorry to bother you - the link to your doc in google docs is deleted, can you please tell me where I can find this again actually? I'm again struggling with packet losses.
docs.google.com/document/d/1jeV_4VKzVmOI...diY/edit?usp=sharing is deleted.

Thanks for your efforts!
Hanno

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9 months 1 week ago #341900 by andrax
Hi,

dein Fehler könnte möglicherweise noch eine weitere Ursache haben.
Da dies beim abbremsen und hohen Geschwindigkeiten passiert, kann es sein, dass dein Servotreiber die überschüssige Generatorenergie 
vom Servomotor nicht wegbekommt und sich dabei der Zwischenkreis entläd.
Hast du Bremswiederstände installiert?
The following user(s) said Thank You: tommylight, Muftijaja

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9 months 1 week ago #341916 by tommylight
Did you try lowering the acceleration?
The default of 750mm/s/s is to much for some machines.
The following user(s) said Thank You: Muftijaja

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9 months 3 days ago #342173 by Muftijaja
Moin Andrax, die Idee ist super. Tatsächlich habe ich beim Servo den zugehörigen Bremswiderstand aber immer angeschlossen gehabt.
Dagegen spricht, dass ich die gleichen Abweichungen beim Tausch auf einen 3,5 Nm CL Stepper auch hatte.
Momentan hab ich noch Winterpause, meine Garage mit der Fräse ist nur 8° kalt, das ist zu ungemütlich um da große Diagnostik zu machen.

Was ich schon vorbereitet habe ist der (vorübergehende) Wechsel von LCNC zu einer Estlcam Controller Karte, bei der man nichts verfusen kann an Motoreinstellungen. ICh will wissen, ob ich weiter an der MEchanik suchen muss oder in der Konfig von LCNC. Aber auch dafür brauche ich etwas mehr Temperatur im Raum. Danke für Deinen Input,ich melde mich wieder!

Hi Andrax, that's a great idea. Actually, I always had the corresponding braking resistor connected to the servo.
The downside is that I had the same deviations when switching to a 3.5 Nm CL stepper.
I'm currently on winter break, and my garage with the milling machine is only 8°C, which is too uncomfortable to do any major diagnostics.

What I have already prepared is the (temporary) switch from LCNC to an Estlcam controller card, where you can't mess up the motor settings. I want to know whether I need to continue looking at the mechanics or at the LCNC configuration. But for that, I also need a slightly warmer room temperature. Thanks for your input, I'll be in touch!

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9 months 3 days ago #342174 by Muftijaja
Dear tommylight, well, I didn't try that until now. I will have that in mind if I get back to my machine at better temperatures. Actually, I have something around 8°C thats not very comfortable for sitting and fiddeling in my garage.
I will come back asap.
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