Low-Frequency Vibration Suppression - Delta ASDA-A2 Series User Manual

6.2.9 Low-frequency Vibration Suppression

If the stiffness of the mechanical system is not sufficient, after the positioning command has
completed, continuous vibration of the mechanical system may occur still even when the motor has
almost stopped. At this time, using low-frequency vibration suppression function can suppress the
low-frequency vibration of mechanical system. The range of frequency setting is from 1.0 to 100.0Hz.
Besides, two modes (Manual/Auto) of low-frequency vibration suppression function are available for
the users to select.
Auto Mode
If the users know the point where the low-frequency occurs, we recommend the users can use this
mode to find the low-frequency of the mechanical vibration automatically. When P1-29 is set to 1, the
system will disable the filter function and find the vibration frequency of low-frequency automatically.
After the detected frequency becomes fixed and stable, the system will set P1-29 to 0, save the first
measured low-frequency value automatically into P1-25 and set P1-26 to 1; then save the second
measured low-frequency value automatically into P1-27 and set P1-28 to 1. If any low-frequency
vibration occurs after P1-29 is set to 0 automatically, please examine if the function of P1-26 or P1-28
is enabled or not. When the setting value of P1-26 or P1-28 is 0, it indicates that there is no
frequency is detected. Please decrease the setting value of P1-30 (Low-frequency Vibration
Detection Level) and set P1-29 to 1 to find the low-frequency again. Please pay close attention on the
setting value of P1-30 as if the setting value of P1-30 is too low, it is easy to regard the interference
as the low-frequency and results in erroneous measurement.
Revision April, 2010
Chapter 6 Control Modes of Operation|ASDA-A2 Series
6-17