6  Adjustments
6.5.2  One-parameter Tuning Procedure
6-40
7
Adjusts the responsiveness by changing the FF and 
FB levels.
After pressing the   Key, select the digit with the 
 or   Keys, adjust the level with   or   
Keys. 
After the setting is changed, press the   Key.
The higher the level, the greater the responsiveness 
will be. If the value is too large, however, vibration 
will occur.
If that occurs, press the   Key. The SERVOPACK 
will automatically detect the vibration frequencies 
and make the notch filter or anti-resonance control 
settings. When the notch filter is set, "NF1" or "NF2" 
will be displayed on the bottom row. 
When the anti-resonance control is set, "ARES" is 
displayed on the bottom row.
Notes:
• If the vibration is great, the vibration frequency 
will be detected even if the   Key is not pressed 
and a notch filter or anti-resonance control will be 
set.
• If the vibration is too small, the SERVOPACK may 
not automatically detect the vibration frequencies. 
If so, press the   Key to forcibly start the detec-
tion.
• The higher the FF level, the shorter the positioning 
time will be. If the level is too high, however, over-
shooting will occur.
• If the FF level is changed when the servomotor is 
stopped and no reference is input, this new value 
will be effective, and the servomotor’s responsive-
ness will be changed. To safely adjust the FF level, 
wait until all operations have been completed and 
check the responsiveness. When the FF level is 
changed largely, vibration may occur because the 
responsiveness is changed rapidly.
• The message, “FF LEVEL”, blinks until the 
machine reaches the effective FF level. If the ser-
vomotor does not stop approximately 10 seconds 
after the FF level is changed, the setting is no 
longer effective and will automatically return to the 
previous setting.
8
A confirmation screen is displayed after level adjust-
ment. Check the value and press the   Key.
9
• Press the   Key. The adjusted values will be 
written to the SERVOPACK, "DONE" will be dis-
played.
• Not to save the values set in step 3, press the   
Key.
The screen in step 3 will appear with the  Key.
10
Press the   Key to complete the one-parameter 
tuning operation. The screen in step 1 will appear 
again.
Step Display after Operation Keys Operation
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