CHAPTER 4 PARAMETER
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Control Gain and Filter Setting Parameter
4
Set PA1_77 (automatic vibration suppressing selection) at 1 (enable) to repeat starting and stopping
the motor multiple times while automatically detecting the anti resonance frequency of the machine and
adjusting PA1_78 (vibration suppressing anti resonance frequency 0) to the best value.
To use this function, always reserve 1.5 s or longer stopping time.
Use vibration suppressing workpiece inertia ratio (vibration suppressing resonance frequency) 0 to
enter the ratio of a vibrating inertial body such as the arm to the inertia of the entire system.
The enabled parameter is selected through the CONT input signal as shown in the following table.
The RS-485 communications setting is enabled if the parameter PA1_77 (automatic vibration
suppressing selection) is set at 2 (communications setting).
Anti resonance
frequency 1
Anti resonance
frequency 0
Enabled vibration suppressing
anti resonance frequency
Enabled vibration suppressing
workpiece inertia ratio
OFF OFF PA1_78 PA1_79
OFF ON PA1_80 PA1_81
ON OFF PA1_82 PA1_83
ON ON PA1_84 PA1_85
For details of vibration suppressing control, refer to Section 5.10 "Special Adjustment (Vibration
Suppressing Control)."
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