Mitsubishi Electric MELSERVO-J3 Series Manual page 602

16. INDEXER POSITIONING OPERATION
No. Symbol
PB02 VRFT Vibration suppression control tuning mode (Advanced vibration suppression
control)
The vibration suppression is valid when the parameter No.PA08 (auto tuning)
setting is "
is always invalid.
Select the setting method for vibration suppression control tuning. Setting this
parameter to "
automatically changes the vibration suppression control vibration frequency
(parameter No.PB19) and vibration suppression control resonance frequency
(parameter No.PB20) after positioning is done the predetermined number of
times.
Droop pulse
Command
Machine side
position
Setting
Note. Parameter No.PB19 and PB20 are fixed to the initial values.
When this parameter is set to "
positioning is done the predetermined number or times for the predetermined
period of time, and the setting changes to "
suppression control tuning is not necessary, the setting changes to "
When this parameter is set to "
suppression control - vibration frequency and vibration suppression control -
resonance frequency. However, this does not occur when the servo off.
PB03 For manufacturer setting
Do not change this value by any means.
PB04 FFC Feed forward gain
Set the feed forward gain. When the setting is 100%, the droop pulses during
operation at constant speed are nearly zero. However, sudden
acceleration/deceleration will increase the overshoot. As a guideline, when the
feed forward gain setting is 100%, set 1s or more as the
acceleration/deceleration time constant up to the rated speed.
Name and function
2" or " 3". When PA08 is "
1" (vibration suppression control tuning mode)
Automatic
adjustment
0 0 0
Vibration suppression control tuning mode
Vibration suppression
control tuning mode
Vibration suppression
0
control OFF
Vibration suppression
control tuning mode
1
(Advanced vibration
suppression control)
2 Manual mode
1", the tuning is completed after
0", the initial values are set to the vibration
1", vibration suppression
Droop pulse
Command
Machine side
position
Automatically set parameter
(Note)
Parameter No.PB19
Parameter No.PB20
2". When the vibration
16 - 81
Initial value Unit
0000h
0".
0000h
0 %
Setting
range
0
to
100