Re: [Emc-users] Servo Motor Tuning.

2021-06-03 Thread John Dammeyer
bodge...@gmail.com] > > Sent: June-03-21 10:42 AM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] Servo Motor Tuning. > > > > On Thu, 3 Jun 2021 at 04:46, John Dammeyer wrote: > > > > > > I'm of the opinion that unde

Re: [Emc-users] Servo Motor Tuning.

2021-06-03 Thread Todd Zuercher
Sent: Thursday, June 03, 2021 2:32 PM To: 'Enhanced Machine Controller (EMC)' Subject: Re: [Emc-users] Servo Motor Tuning. [EXTERNAL EMAIL] Be sure links are safe. What's really odd is at the moment this same axis that used to be incredibly reliable at 150 ipm with jogging now also has started

Re: [Emc-users] Servo Motor Tuning.

2021-06-03 Thread John Dammeyer
: andy pugh [mailto:bodge...@gmail.com] > Sent: June-03-21 10:42 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Servo Motor Tuning. > > On Thu, 3 Jun 2021 at 04:46, John Dammeyer wrote: > > > > I'm of the opinion that under load in one direction but n

Re: [Emc-users] Servo Motor Tuning.

2021-06-03 Thread andy pugh
On Thu, 3 Jun 2021 at 04:46, John Dammeyer wrote: > > I'm of the opinion that under load in one direction but not the other the > 0.0137" backlash is impacting the motion. Backlash will certainly make thingsw difficult, as in effect you are trying to tune two systems with one PID. There is the

Re: [Emc-users] Servo Motor Tuning.

2021-06-03 Thread Gene Heskett
s loaded. I'll try that. > > John > > > -Original Message- > > From: Jon Elson [mailto:el...@pico-systems.com] > > Sent: June-02-21 8:52 AM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] Servo Motor Tuning. > > > >

Re: [Emc-users] Servo Motor Tuning.

2021-06-02 Thread John Dammeyer
l try that. John > -Original Message- > From: Jon Elson [mailto:el...@pico-systems.com] > Sent: June-02-21 8:52 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Servo Motor Tuning. > > On 06/02/2021 01:20 AM, John Dammeyer wrote: > > I really

Re: [Emc-users] Servo Motor Tuning.

2021-06-02 Thread Jon Elson
On 06/02/2021 01:20 AM, John Dammeyer wrote: I really don't know if this is the right forum for this question but in working with the mill over the last few months every once in a while the DC Brushed Servo Y axis makes this horrible noise like a stepper motor at the harmonic instability. Try

Re: [Emc-users] Servo Motor Tuning.

2021-06-02 Thread Les Newell
That sounds like you could have to much Kd. Try reducing it. Do you have an oscilloscope? An oscilloscope really helps when tuning servos. As the UHU doesn't have an analog output you would have to probe the motor drive signals. Put a simple R-C filter in line with the probe to filter out the

[Emc-users] Servo Motor Tuning.

2021-06-02 Thread John Dammeyer
I really don't know if this is the right forum for this question but in working with the mill over the last few months every once in a while the DC Brushed Servo Y axis makes this horrible noise like a stepper motor at the harmonic instability. Usually I've just cycled power on the servo and