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Tuning
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ASDA-A3
5
5.7.4.3 Application example
During position settling, if a vibration with the frequency lower than 100 Hz (not the
high-frequency noise when the motor is moving) occurs and it is difficult to identify the frequency
with the System Analysis function, use the low-frequency vibration suppression function to
suppress the vibration caused by the specific frequency. Setting the low-frequency vibration
suppression filter makes the system more stable but lowers the response. When the frequency
setting is the same for the two sets of low-frequency vibration suppression filter, the effect of
vibration suppression is doubled.
If the frequency of the low-frequency vibration in the system varies during the operation, such
as in the long-distance belt drive system, the vibration frequency may be different at two
positioning points. In this case, set two sets of low-frequency vibration suppression individually.
Position
Feedback
position
Command
position
Low-frequency
vibration cycle
T
1. Set P1.025 and P1.026.
P1.025 = 1/T
P1.026 = 1
Time
Position
Command
position
Feedback
position
Low-frequency
vibration cycle
T
Time
2. If the vibration is smaller but not completely
eliminated, you can set another set of
low-frequency vibration suppression with the
same frequency. The effect of vibration
suppression is doubled.
P1.027 = 1/T
P1.028 = 1
Position
Command
position
Feedback position
after low-frequency
vibration suppression
Time
3. If the vibration is completely eliminated but the
response is too slow, gradually increase
P1.026.
P1.026 = 2
Relevant parameter
Refer to Chapter 8 for detailed descriptions of the relevant parameters.
Parameter
P1.025
P1.026
P1.027
P1.028
P1.029
P1.030
Function
Low-frequency vibration suppression frequency 1
Low-frequency vibration suppression gain 1
Low-frequency vibration suppression frequency 2
Low-frequency vibration suppression gain 2
Auto low-frequency vibration suppression mode
Low-frequency vibration detection
5-58
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