Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-02 Thread Curtis Dutton
Today I received a second AC806 drive in the mail. It is a V1 ACS806. The V1 is simpler to tune. It only has a current loop Kp and Ki, as well as position loop Kp, Ki, and Kd. I tried that on the same motor that the AVS806V2 is having trouble with. Following error is now down to under 20 counts a

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-02 Thread Steve Blackmore
On Thu, 1 May 2014 18:56:23 -0400, you wrote: >Thanks to everybody for the information. If anything it helped me >understand the nature of servos better as I've been sitting here tweaking >the machine. >So it has something to do with some sort of lag in the servo driver. I'll >be emailing leadshi

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-01 Thread Kirk Wallace
On 05/01/2014 03:56 PM, Curtis Dutton wrote: ... snip > #2. Run the motor with no load: I disconnected the motor drive belt. > Re-tuned the servo and then started running it in linux cnc. Net result... > exactly the same behavior. ... snip I think you should tune the drive with the load that it

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-01 Thread Curtis Dutton
gt; > To: "Enhanced Machine Controller (EMC)" > > > Subject: Re: [Emc-users] Leadshine ACS806 - Large f-error at higher > speeds - > > what is acceptable? > > > > Thanks to everybody for the information. If anything it helped me > > understand the n

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-01 Thread Peter C. Wallace
On Thu, 1 May 2014, Curtis Dutton wrote: > Date: Thu, 1 May 2014 18:56:23 -0400 > From: Curtis Dutton > Reply-To: "Enhanced Machine Controller (EMC)" > > To: "Enhanced Machine Controller (EMC)" > Subject: Re: [Emc-users] Leadshine ACS806 - Large f-

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-01 Thread Curtis Dutton
Thanks to everybody for the information. If anything it helped me understand the nature of servos better as I've been sitting here tweaking the machine. I tried 2 experiments to see if I could get better results. #1. Give it 80Volts: I hooked the driver up to an 80v PS. The drive clearly had more

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-01 Thread Gene Heskett
On Thursday 01 May 2014 13:42:08 Curtis Dutton did opine: > Ok this makes sense. Thanks all for your explanations. I guess I just > wasn't sure what was reasonable behavior and what wasnt. > > So if the motor is rated for 36v, and the drive is rated for 80 volts > max. How much voltage can I get

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-01 Thread Jon Elson
On 05/01/2014 10:34 AM, Curtis Dutton wrote: > Ok this makes sense. Thanks all for your explanations. I guess I just > wasn't sure what was reasonable behavior and what wasnt. > > So if the motor is rated for 36v, and the drive is rated for 80 volts max. > How much voltage can I get away with deliv

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-01 Thread Curtis Dutton
Ok this makes sense. Thanks all for your explanations. I guess I just wasn't sure what was reasonable behavior and what wasnt. So if the motor is rated for 36v, and the drive is rated for 80 volts max. How much voltage can I get away with delivering to the drives without damaging equipment? Than

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-01 Thread Jon Elson
On 05/01/2014 06:22 AM, andy pugh wrote: > On 30 April 2014 19:37, Curtis Dutton wrote: >> The motor is a 130W motor >> 1.5mm at around 12000mm/min. > That seems like a very small motor, and a very fast travel. > > Is it possible that the motor is simply running out of steam? > Generally when the

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-05-01 Thread andy pugh
On 30 April 2014 19:37, Curtis Dutton wrote: > The motor is a 130W motor > 1.5mm at around 12000mm/min. That seems like a very small motor, and a very fast travel. Is it possible that the motor is simply running out of steam? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-04-30 Thread Kirk Wallace
On 04/30/2014 11:37 AM, Curtis Dutton wrote: > I recently installed an ACS806 brushless drive along with a BLM57130 > leadshine motor. The motor is a 130W motor with a 4000ppr encoder. This is just my opinion, but to me 130 Watts is way too small, especially with a router where you might need ext

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-04-30 Thread Peter C. Wallace
On Wed, 30 Apr 2014, Curtis Dutton wrote: > Date: Wed, 30 Apr 2014 14:37:34 -0400 > From: Curtis Dutton > Reply-To: "Enhanced Machine Controller (EMC)" > > To: "Enhanced Machine Controller (EMC)" > Subject: [Emc-users] Leadshine ACS806 - Large f-

Re: [Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-04-30 Thread Jon Elson
On 04/30/2014 01:37 PM, Curtis Dutton wrote: > I have tuned it up and it seems to be tuned well, and has a low following > error (< 0.01mm) at about 400mm/min and below. > > The problem is that it seems to rapidly increase from there. 0.1mm around > 3000mm/min and 1.5mm at around 12000mm/min. > 12

[Emc-users] Leadshine ACS806 - Large f-error at higher speeds - what is acceptable?

2014-04-30 Thread Curtis Dutton
I recently installed an ACS806 brushless drive along with a BLM57130 leadshine motor. The motor is a 130W motor with a 4000ppr encoder. The controller is a step and direction type, with the encoder feedback passed back through to linuxcnc via a mesa 5i25 and a 7i86s.. So I'm using the drive to run