0-10v Servo Control with 7i76E

Hi, stupid mistake. I had to change the sign/direction of the feedback. But there seems to be a problem with my board. There is noise in the analog signal. And with 1000 revolutions per minute and without a pid regulator I get spindle-vel-fb-rpm-abs 1005-1010rpm

should I filter the analog signal?

 

What do you think of the scheme?  I can also upload a simulation ?
In simulation it's good, but in real life it's not good

Maybe I should add a capacitor in parallel with the resistor R28 ?

I think the filter is not needed, also feedback is likely not needed either
as speed variations of a few % will have no significant effect on machining
or spindle synchronized motions as long as your encoder resolution is greater
than say100 PPR.

I have big plans for the lathe . I will add another spindle in the future. This one should work as a C axis. Currently the resolution of the servo motor is 2048x4 = 8192 . I will add an additional encoder connected to the spindle with gear 2:1 or 3:1 ( 8192x 2 or 3 ).

Hi, I can't clear the output voltage ripple ...Does anyone have a photo of the +-10v signal with the oscilloscope.
What can I improve on the scheme?

edit; ignore that, just noticed the tiny _invert label

The problem is that if I put a big capacitor and a resistor, I will add a big delay. I want the spindle to also work as a C axis for milling. I don't know what's wrong. Does anyone have a diagram of the solution that is in MESA card? Or a picture of the output with an oscilloscope?

Here is the analog output circuit of the 7I97
Note that this uses offset PWM (no direction signal)
It does need an enable signal.

Note that the power for the LCX04s come from a
3.3V reference supply

 
 

I check this on my noise nightmare. 10V Signal and out at 4K and 8K.   0,4V max

Thank you for sharing! After simulating the circuit, I changed some resistors. Now I have a faster reaction. It seems that the main problem in my scheme is that I use a common power supply. I have 35mV (Pk to Pk) ripple in the 5V power supply. Do you have any ideas for reducing in power supply ripple or other easy modification in board?