CHAPTER 4 PARAMETER

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 Anti resonance Enabled vibration suppressing Enabled vibration suppressing

frequency 1

frequency 0

anti resonance frequency

workpiece inertia ratio

4

OFF

OFF

OFF

ON

PA1_78

PA1_80

PA1_79

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)."

4-34 Control Gain and Filter Setting Parameter