If the rigidity of the mechanical system is not sufficient after completion of the positioning command, continuous vibration of the mechanical system can still occur even when the motor is almost stopped. We call this type of vibration “low frequency vibration”. At this time, you can use the low frequency vibration suppression function to minimize vibration at the machine edges. The frequency range is 1.0 to 100.0Hz. Note that low frequency vibration suppression is only available on the ASDA-A2, ASDA-A3 and ASDA-B3 series.

There are two modes, automatic and manual, that you can select:

1. Auto mode: If it is difficult for you to know the point where low frequency vibration occurs, we recommend that you select auto mode to find low frequency mechanical vibration automatically. When P1-29 is set to 1, the system disables the filter function and finds the low frequency of vibration automatically. After the detected frequency becomes fixed and stable, the system sets P1-29 to 0 and saves the first automatically measured low frequency value in P1-25 and sets P1-26 to 1. Then the system saves the second value. low frequency vibration automatically measured in P1-27 and sets P1-28 to 1. If any low frequency vibration occurs after P1-29 is automatically set to 0, check whether the function of P1-26 or P1-28 is enabled or not . When P1-26 or P1-28 is set to 0, it indicates that there is no vibration frequency detected. Please decrease the value set in P1-30 (Low Frequency Vibration Detection Level) and set P1-29 to 1 to find the low frequency vibration again.

2. Manual mode: There are two groups of low frequency vibration suppression parameters. The first group is P1-25 and P1-26 and the second group is P1-27 and P1-28. Using these parameters you can suppress vibration from two different low frequencies and improve system performance. P1-25 and P1-26 set the vibration frequency, and P1-26 and P1-28 set the frequency response after using the filter (after the signals are filtered). When the values set in P1-26 and P1-28 are higher, the frequency response is faster. However, if the values are too high, they can affect engine operation and the engine may not run properly. The default settings for P1-26 and P1-28 are 0, indicating that low frequency vibration suppression is disabled.