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Messages - Davek0974

151
General Mach Discussion / Re: Mill or Turn?
« on: May 09, 2019, 11:54:41 AM »
I set the Chirons spindle up as an axis, did an AutoTune then changed it to a spindle and entered the settings, I then tweaked from there.


Ok, just tried that, she was not happy.

It started to tune, set some low values and then just started thrashing back and forth wildly, had to e-stop to stop it.

It seems i can get somewhere with P=3000, i=0, d=0, kff=0 but, it's not balanced in behaviour FWD/REV so FWD seems not too bad but REV it seems to continue after the signal is removed then stop instantly. I don't know if it makes a difference but the following error is massive too.

DAC offset is 0.4v which is inline with other drives.

A short vid showing 2 FWD runs and 2 REV runs
https://youtu.be/k3MQxbtKppQ


152
General Mach Discussion / Re: Mill or Turn?
« on: May 09, 2019, 11:04:36 AM »
Ooh, thats an idea  :)

Thanks

153
General Mach Discussion / Re: Mill or Turn?
« on: May 09, 2019, 09:22:20 AM »
any success?

Yes, at last, i reset those two parameters again and enabled it and it sprang into life :) - If had rebooted yesterday it would probably have done it then too.

So, moving on.....

Pid Tuning :(

Of course, CS Labs in their infinite wisdom have removed the Auto-Tune from the spindle servo page :(

I have been plugging numbers for an hour now and although it runs its not happy. It will overshoot then slowly crawl back to dead-band stop, or it will run ok at lower speeds (<1500) but at 3000 it will e-pid fault on max following error accumulator being massive (>100000)

I've had it jumping about so violently i had to e-stop :) and had it sit there slowly moving back and forth but never stopping.

Any ideas how to pid tune a spindle so it can run at 3000 and stop when told?

Getting there but no champagne yet :(

154
General Mach Discussion / Re: Mill or Turn?
« on: May 09, 2019, 09:16:42 AM »
Hey Dave , your email is rejecting me . It says I am spamming you (;-)

(;-) TP

WTF :) Thats the last thing i want ;)

I did just get one from you and i replied.

Dave

155
General Mach Discussion / Re: Mill or Turn?
« on: May 08, 2019, 12:51:34 PM »
Yeah i'll set those again in the morning, Pn002 was 1 for speed mode, pn003 was 1 for manual enable or 0 for external enable.

156
General Mach Discussion / Re: Mill or Turn?
« on: May 08, 2019, 12:46:52 PM »
When its enabled, the motor is locked as expected, it just does not move when told.

Will check aux function 1

Ta

157
General Mach Discussion / Re: Mill or Turn?
« on: May 08, 2019, 07:49:12 AM »
Hi

i cant recall what it was showing but if you twist the motor the numbers go up and down :)

Didn't know about para 1, will have to be later as have hospital visit to go on now ;)

158
General Mach Discussion / Re: Mill or Turn?
« on: May 08, 2019, 07:34:03 AM »
It was in Location mode pn0002=2 and the other drives are all =1 so changed it to 1 but still dead.

159
General Mach Discussion / Re: Mill or Turn?
« on: May 08, 2019, 07:28:09 AM »
Will check another drive, back in a minute....

160
General Mach Discussion / Re: Mill or Turn?
« on: May 08, 2019, 07:27:03 AM »
Hi
Yes, i used the same wiring connection layout as the other 4 drives.

I just pulled the control plug, manually enabled it via Pn003=1, the motor locked as expected, then applied 1.5v to pins 13 & 25.

Result was no movement at all.

Seems its drive related at least.

Is there any more i can check or is it time email the seller :(