3.2  Operating Procedures for Utility Functions 
3.2.28  Advanced Autotuning without Reference (Fn201)
3-72
Operating Procedure
Step Operation Result
1
Press the   Key to display the 
Utility Mode Main Menu, and then 
use the   Key or   Key to 
select Fn201.
2
Press the   Key.
The initial setting display for 
advanced autotuning will appear.
Note: If the initial setting display does not 
appear and the status display 
changes to NO-OP, refer to the 
following section and correct the 
problem.
3.2.28 Advanced Autotun-
ing without Reference 
(Fn201) - Preparations on 
page 3-70
3
Use the   Key,   Key, and 
 Key to set the items in steps 
3-1 to 3-4.
–
3-1
 Jcalc (Calculating Moment of Inertia)
Specify whether to calculate the moment of inertia. Normally select ON.
ON: Calculate the moment of inertia (default setting).
OFF: Do not calculate the moment of inertia.
Note: If the moment of inertia ratio is already known from the machine specifica-
tions, set the value in Pn103 (Moment of Inertia Ratio) and set Jcalc to OFF.
3-2
 Mode
Set the mode.
1: Tunes the SERVOPACK for response and stability (standard adjust-
ment level).
2: Tunes the SERVOPACK for positioning (default setting).
3: Tunes the SERVOPACK for positioning, giving priority to suppression of 
overshooting.
Continued on next page.
1:BB         FUNCTION
Fn200:TuneLvl S et
Fn201:AAT 
Fn202:Ref-AAT
Fn203 :OnePrmTun
Status display
1:BB                 AAT
 Jcalc=ON
 Mode=2 Type=2
  S troke=+00800000
        (0003 .0)rev