Mitsubishi Electric MR-J3-B Instruction Manual page 133

7. SPECIAL ADJUSTMENT FUNCTIONS
(4) Vibration suppression control manual mode
Measure work end vibration and device shake with the machine analyzer or external measuring instrument,
and set the vibration suppression control vibration frequency (parameter No. PB19) and vibration
suppression control resonance frequency (parameter No. PB20) to set vibration suppression control
manually.
(a) When a vibration peak can be confirmed using MR Configurator, machine analyzer or external FFT
equipment
Gain characteristic
(b) When vibration can be confirmed using monitor signal or external sensor
Position command frequency
Vibration cycle [Hz]
1Hz
Vibration suppression control
vibration frequency
(Anti-resonance frequency)
Parameter No. PB19
Phase
-90deg.
Motor end vibration
(Droop pulses)
t
Vibration suppression control
vibration frequency
Vibration suppression control
resonance frequency
Set the same value.
100H
Vibration suppression
control resonance
frequency
Parameter No. PB20
External acceleration pick signal, etc.
7 - 8
Resonance of more
than 100Hz is not the
target of control.
Vibration cycle [Hz]
t