Schaublin 125-CNC retrofit.

Oh, I think I am slowly understanding. (Thanks for your patience).

Since I want the axis to run a max of 3m/min, I should change the digital motor speed command value  in the driver P04-02 down from 3000rpm, to 1500rpm, so that a 10V max speed  command from LinuxCNC will result in that 1500 RPM being commanded by the driver, rather than the driver  running the motor up to  3000rpm, and and getting told to slow down by LCNC.
 

I left P00-03 MOTOR RATED SPEED = 3000,

but changed the following:
 

This is the resulting plot with the same P 15, FF0.1 as yesterday. This is the motion reversal with a slow  feedrate of 200 mm/min.
EDIT: I just noticed that I doubled the sensitivity. The change  made no significant difference yet. The motor is not ringing at idle.

 

Cheers,
Mark
 

Okay, I can now see why that changes nothing...
 

 

I dont see a V/1000rpm setting in any of the setting tables.
EDIT: Oops, you already pointed that out to me. P06-40... see below.

 

Is this the reason for the separate (to me seemingly redundant) max speed settings in the INI, for both axis and Joint?
 

Am I supposed to set the Joint to match the driver (MAX Velocity 100 -->  10V --> 3000RPM motor rated speed), and then just limiting it to the desired half that, by setting the X Axis max speed to 50?
Mark

I just reread and saw that you already provided the answer:

"P06-40 Input gain of speed command 10-2000 500 1rpm/V Immediate
whats this value currently ?"

I reset PO6-40 to 150, and that does make a difference.
 

 

...a few hours later...

I ran up the drivers auto tune till I got resonance (at 21). Backed it off, first to 20, and then after more testing to 19.

The best tuning I came up with so far on X is the drive auto tuned at 19, Linuxcnc P15,  FF 0.2.

 

Next angle of attack is to look whether I have the Accel too high.