# ID 50557

Characteristic filter frequency greater than half the sampling rate.
Description | According to Shannon's sampling theorem, the maximum cut-off frequency is (½*TA= cycle time of the NC controller). The cut-off frequency of the PT1 filter is calculated from the time constant as follows: fg = 1 / (2 * PI * P-AXIS-00357). The cut-off frequency of all other filters is specified directly in the parameter P-AXIS-00067.

Possible solutions:

Reduce cut-off frequency P-AXIS-00067. Increase the time constant P-AXIS-00357 for PT1 filters.

Reduce the cycle time of the NC controller

See [FCT-A7// Section: PT1 filters]

Response | Class | 3 | The filter is deactivated.
Solution | Class | 7 | Reduce the cut-off frequency P-AXIS-00067 or increase the time constant P-AXIS-00357
Parameter | %1: |
Logical axis number P-AXIS-00016 of axis affected
%2: |
Number of filter affected
%3: |
Filter type P-AXIS-00204
%4: |
Current filter cut-off frequency P-AXIS-00067
%5: |
Sampling frequency of the controller (1 / TA)
Error type | -