Another servo tuning

Right with the deriv connected I get the attached curve.

will play with maxaccel in a minute
 

Stepgen maxaccel at 0

Does changing the FF1 value affect the initial deviation when movement starts?
I would concentrate on just that for the moment, try increasing and decreasing FF1 and FF2 (one at a time) and also try changing D (try 0.0001, 0.001, 0.01) and try to get a feel for what changes.

an if I drop the axis accel to 100 I have been machining with this setting and the results were seriously good.
but I would like to bump up the max speed and acceleration a bit if we could figure out what is going on.
thanks

Just to make life easier we had massive storm and power outage. It never ends.

I have tried increasing decreasing FF1 and FF2 and 1 and 0 is about as good as it gets with changing D I can only make it worse.

I am wondering if it is not some kind of system noise because it is very squigly while it is on in steady motion. Could there be a problem with the motor driver? I am feeding it step dir instead the usual +-10v

This is just a thought I am guessing that Peter could shine some light on this.
Would it be better if I reconfigure drives for lets say PWM dir?

I could not use the original Bosch servo drives and the first try was with small cheap drivers which ony had Step Dir but the new once I have can be set into different types of inputs.

I have drives set in position control too.

Could any of these cause these issues?

correction: can only set it to PWM 50% zero set point not PWM dir
 

I would try open loop step/dir first to eliminate possible mechanical
or encoder issues (take feedback from stepgen position rather than
encoder position)