Low-Frequency Vibration Suppression In Position Mode - Delta ASDA-A3 Series User Manual

ASDA-A3

6.2.9 Low-frequency vibration suppression in Position mode

If the machine is too flexible, vibration persists even when the motor stops after executing the
positioning command. The low-frequency vibration suppression function can reduce the
machine vibration. The suppression range is between 1.0 Hz and 100.0 Hz. Both auto and
manual functions are available.
Auto function
If you have difficulty finding the resonance frequency, you can enable the auto low-frequency
vibration suppression function, which searches for the specific resonance frequency. If you set
P1.029 to 1, the system disables this function automatically and starts to search the vibration
frequency. When the detected resonance frequency remains at the same level, it automatically
sets P1.029 to 0 and sets P1.025 to the first frequency and sets P1.026 to 1. It sets P1.027 to
the second frequency and then sets P1.028 to 1. If P1.029 is automatically reset to 0, but the
low-frequency vibration persists, check if P1.026 or P1.028 is enabled. If the values of P1.026
and P1.028 are both 0, it means no frequency is detected. Lower the value of P1.030 and set
P1.029 to 1 to search the vibration frequency again. Note that when you set the detection level
too low, it might detect noise as low-frequency vibration.
The diagram of the basic control structure is shown in the following flowchart:
Repeat position
control function.
Check if vibration
No
occurs during
positioning?
Set P1.029 to 1.
Vibration reduced?
Set P1.029 to 0.
Operation
complete
Yes
Yes
No
Check if P1.029 is
set to 0.
Yes
Decrease the
*1
value of P1.030.
Yes
No No
Check if P1.026
and P1.028 are set
to 0.
Operation Mode
Increase the value
*2
of P1.030.
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