Mitsubishi Electric MELSERVO-JN Series Instruction Manual page 211

7. SPECIAL ADJUSTMENT FUNCTIONS
(4) Vibration suppression control manual mode
Vibration suppression control can be set manually by setting the vibration suppression control vibration
frequency (parameter No. PB19) and the vibration suppression control resonance frequency (parameter No.
PB20) after measuring work side vibration and device shake using an external measuring instrument.
(a) When a vibration peak can be measured using an external measuring instrument
Gain characteristic
(b) When vibration can be measured using an external measuring instrument
Position command frequency
Vibration cycle [Hz]
1Hz
Vibration suppression control
vibration frequency setting
(Anti-resonance frequency)
Parameter No. PB19
Phase
-90deg.
Motor end vibration
(Droop pulses)
Vibration suppression control
vibration frequency
Vibration suppression control
resonance frequency
Set the same value.
POINT
When the load side vibration does not travel to the motor side, setting the motor
side vibration frequency does not have any effect.
When vibration frequency (anti-resonance frequency) and resonance frequency
can be measured using an external measuring instrument, setting different
values in parameters No. PB19 and No. 20 separately improves the vibration
suppression performance better rather than setting the same value.
100Hz
Vibration suppression
control resonance
frequency setting
Parameter No. PB20
External acceleration pick signal, etc.
7 - 12
Resonance of more
than 100Hz is not the
target of control.
Vibration cycle [Hz]