Welcome to LinuxCNC.org

Hello, we have one problem with the servo vibration.
The input-scale in the ini file is 250, The impulse to pc is comming from Heidenhain ROD424.

1rev = 250 counts and 0,2rev/mm
50counts / 1mm

this is axis0 exemple in the inifile:

# First axis
[AXIS_0]

TYPE = LINEAR
UNITS = mm
HOME = 0.000
MAX_VELOCITY = 1.0
MAX_ACCELERATION = 4.0
BACKLASH = 0.000
#INPUT_SCALE = 81920
INPUT_SCALE = 250
OUTPUT_SCALE = 1
OUTPUT_OFFSET = 0
MIN_LIMIT = -100.0
MAX_LIMIT = 100.0
FERROR = 100.000
#MIN_FERROR = 0.002
HOME_OFFSET = 0.10
HOME_SEARCH_VEL = 0.10
HOME_LATCH_VEL = -0.01
HOME_USE_INDEX = YES
HOME_IGNORE_LIMITS = YES
MAX_OUTPUT = 10.0
# PID tuning params
DEADBAND = 0.000015
P = 100.0
I = 0.000
D = 0.000
FF0 = 0.000
FF1 = 0.000
FF2 = 0.0
BIAS = 0.000

This does look like it goes in the Servo Tuning as I see you have not done any... but I can't move it for some strange reason.

John

you have an example of what should be there in the PID and FF

There are no fixed PID numbers as they must always be adjusted for each system
this is called "tuning"

How tuning is done depends on your drive type (the motor drive) that is whether it is a:

1. Velocity mode drive (drive with local velocity feedback loop often with tachometer)

2. Torque mode drive (current mode)

3. Simple HBridge (voltage mode)

If you can provide this information it would be easier to help

We have +/-10V and the impulse is comming from the servomotor-encoder

OK so that means a velocity or torque mode drive
Do you have any idea which it is?

Is there a tachometer on the motor?
Do you have the motor drive part number?
Does the encoder signal go to the drive?