Shihlin electric SDP Series, Manual

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are resonance attenuation rates. When low-frequency resonance occurs, the user can set
PB29 to 1 to enable the auto-suppression function if the resonance frequency is unknown,
the drive will automatically detect the resonance frequency, and then set the detected
results to the PB31 and PB33 in sequence, and set PB32, PB34 to 1 to enable the auto-
suppression function. After auto-detection is completed, PB29 will set back to 0
automatically. For other PB29 operate procedure, please refer to the table below.
When PB29 is set to 1, if the resonance still exists, please check whether PB32 and PB34
are both 0. If yes, it means the vibrate frequency is not detected, which may impacted by
high swing detection level(Note2). You can decrease the level and restart the detection to
solve. If the values are not 0, which means the detection is wrong, which may cause by low
swing detection level. You can increase the level before restart the detection. The complete
auto-suppression flow chart is as follows:
Note 1. Too large gain value may make the motor to run un-smoothly.
Note 2. The swing detection level refers to the peak-to-peak value of the vibration, and the
unit is pulse.
PB29 parameter flow chart
PB29 current
value
PB29 modified
value
Function
0 1
Clear PB31~34 values,
enable the auto-suppression mode
1 0
Store PB31~34 value,
disable the auto-suppression function.
1 1
Clear PB31~34 values,
enable the auto -suppression mode
Flow chart of auto-resonance suppression.