6.22 Online Vibration Monitor (Fn207)6-376 Utility Functions (Fn)6.22 Online Vibration Monitor (Fn207)If vibration is generated during operation and this function is executed while the servomotor power is still ON,the machine vibration can sometimes be suppressed by setting a notch filter or torque reference filter for thevibration frequencies.When online, vibration frequency caused by machine resonance will be detected and the frequency that hasthe highest peak will be displayed on the panel operator. The effective torque reference filter or notch filterfrequency for the vibration frequencies will be automatically selected and the related parameters will be auto-matically set.In addition to this function, EasyFFT (Fn206) can be used to detect machine vibration and automatically makenotch filter settings. Use the following flowchart to determine how these functions should be used.If a Σ-V Series SERVOPACK is used to make adjustments, it is recommended that you use advanced autotun-ing. This built-in function is used to maintain interchangeability with previous models. There is normally noneed to use it.(1) PreparationThe following conditions must be met to perform online vibration monitoring.• The write prohibited setting (Fn010) must be set to Write permitted (P.0000).• The servomotor power must be ON.• There must be no overtravel.• The correct moment of inertia (Pn103) must be set.• The test without a motor function must be disabled (Pn00C.0 = 0).StartHow to use EasyFFT (Fn206) and online vibration monitor (Fn207),when they are mainly used for servo gain adjustment.EndVibration withhigh-frequency noiseduring operationNoNoYesYesAdjust servo gainVibrationWith the servomotor power ON,execute online vibrationmonitor (Fn207)Turn OFF the servomotor power,and execute EasyFFT (Fn206)
