5.6 Anti-Resonance Control Adjustment Function (Fn204)5-395 Adjustments5.6 Anti-Resonance Control Adjustment Function (Fn204)This section describes the anti-resonance control adjustment function.5.6.1 Anti-Resonance Control Adjustment FunctionAn increase in the control gain of the SERVOPACK is effective for high-speed, high-precision driving of amachine. If the gain is excessively high, vibration will occur in the operating section of the machine. The anti-resonance control adjustment function (Fn204) is an effective function that supports anti-resonance controladjustment if the vibration frequencies are from 100 to 1,000 Hz.The anti-resonance control adjustment function reduces vibration by adjusting the damping gain with vibra-tion frequencies that are automatically detected or manually set.The automatic detection of vibration frequencies is enabled or disabled using the tuning mode settings.•(1) Check Points for SettingsCheck the following settings before performing anti-resonance control adjustment function, or otherwise"NO-OP" will be displayed during anti-resonance control adjustment.• The control must not be set to force control.Tuning ModeDetection ofVibrationFrequenciesGuideline Selection0 YES • The vibration frequencies are unknown.• This function is being used for the first time.1 NO• The frequencies are already known.• To fine-tune the damping gain when the anti-resonance control adjustmentfunction has already been used.CAUTION• If this function is executed, related parameters will be set automatically. Therefore, there will be a largeresponse change after this function is enabled or disabled. Enable the function in a state where themachine can come to an emergency stop at any time to ensure the safety operation of the machine.• Be sure to set a suitable value for the mass ratio (Pn103) using advanced autotuning before executing theanti-resonance control adjustment function. If the setting greatly differs from the actual mass ratio, normalcontrol of the SERVOPACK may not be possible, and vibration may result.• This function detects vibration between 100 and 1,000 Hz. Vibration will not bedetected for frequencies outside of this range, and instead, "F----" will be displayed. Ifthat occurs, use one-parameter tuning with tuning mode 2 selected to automaticallyset a notch filter or use the vibration suppression function (Fn205).• Vibration can be reduced more effectively by increasing the present damping gain(Pn163). The amplitude of vibration may become larger if the damping gain is exces-sively high. Increase the vibration gain from about 0% to 200% in 10% incrementswhile checking the effect of vibration reduction. If the effect of vibration reduction isstill insufficient at a gain of 200%, cancel the setting, and lower the control gain usinga different method, such as one-parameter tuning.
