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6-5 Low Frequency Vibration Suppression Function
Machine lools equipment are low-flexibility or rigid, which can easily cause the front end low-
frequency vibration of the workpiece when the motor in rapid acceleration / deceleration. This device
provides low-frequency vibration suppression function to eliminate this phenomenon, and the low-
frequency vibration suppression is mainly used to perform vibration suppression on the vibration
frequency below 100 Hz.
Pn339 / Pn341 / Pn343 Low Frequency Suppression Frequency (First/ Second/
Third Set)
Initial Value Unit Setting Range Effective RS-485 Address
1000 0.1 Hz 10 ~ 1000 Effective after Set 0330H
Setting Description: Used to eliminate the low frequency vibration generated by insufficient
mechanism rigidity. When Pn340, Pn342, Pn344 are set to zero, this indicates the
low frequency suppression is not used.
Pn340 / Pn342 / Pn344 Low Frequency Suppression Parameter (First/ Second/
Third Set)
Initial Value Unit Setting Range Effective RS-485 Address
0 -- 0 ~ 30 Effective after Set 0331H
Setting Description: Used to adjust the frequency range to be suppressed, greater the value, wider the
frequency range of suppression is, the recommended setting is 10.
Attention
• Low frequency vibration suppression can only be used under position control mode.
• When automatic low frequency vibration suppression is executed, system response before and
after executing this function will change fiercely. To ensure the safety of operator, please execute
this function under the condition when the emergency stop can be implemented at any time.
• When vibration does not occur in position offset of the vibration frequency is not within the
detection frequency range, the frequency will not be detected. At this time, please use the
equipment that is able to measure vibration frequency, such as a displacement meter or vibration
meter, to measure the vibration.
• If the vibration cannot be cleared by using the automatically detected vibration frequency, it
means the error may exist between the actual and the detected vibration frequencies. At this time,
please fine-tune the detected vibration frequency.
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