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Instructions on one-touch tuning
Instructions on amplifier command method
• Once one-touch tuning is performed, control by commands from a controller will not be available. To enable control from the
controller again, reset the controller, cycle the power of the servo amplifier, or reset software.
• Set the permissible travel distance for not to collide with a machine. In addition, the permissible travel distance may be
exceeded because of an overshoot during one-touch tuning. Therefore, set the permissible travel distance with a margin to
avoid exceeding the range of a limit switch.
• When the manual mode is selected in [Pr. PA08.0 Gain adjustment mode selection], a load to motor inertia ratio is not
estimated. Optimum acceleration/deceleration commands are generated by [Pr. PB06 Load to motor inertia ratio/load to
mass ratio] at the start of the one-touch tuning. When the load to motor inertia ratio is not accurate, optimum acceleration/
deceleration commands may not be generated, causing the tuning to fail.
• When the one-touch tuning is started by using USB communication, if the communication between MR Configurator2 and a
servo amplifier is interrupted during the tuning, both the servo motor and the tuning stop. In addition, the servo parameters
returns to the status at the start of one-touch tuning.
• When the one-touch tuning starts during the velocity mode, the mode is switched to the position mode automatically. As a
result, the tuning result may differ from the results obtained by using the speed command.
One-touch tuning procedure
Procedure for one-touch tuning in user command method by MR Configurator2
Perform the one-touch tuning with the following procedure.
1.
Start
2.
Overshoot permissible level setting
Set the permitted overshoot level for the one-touch tuning in [Pr. PA25 One-touch tuning - Permitted overshoot level].
3.
Operation
Rotate a servo motor by a controller. In the user command method, the one-touch tuning cannot be performed during a servo
motor stop.
4.
One-touch tuning start, mode selection
On MR Configurator2, select "One-touch tuning" from the tuning tab of MR Configurator2. Select "User command method".
5.
Response mode selection
Select the response mode (High mode/Basic mode/Low mode) in the one-touch tuning window of MR Configurator2.
6.
One-touch tuning execution
Click "Start" during servo motor driving.
7.
One-touch tuning in progress
Gains and filters are adjusted automatically. During the process of the tuning, the progress status is displayed in % on MR
Configurator2.
8.
One-touch tuning complete
Once one-touch tuning is complete, the parameters will be set automatically. If tuning did not complete properly, a tuning error
will be displayed.
Page 29 Servo parameters adjusted with one-touch tuning
9.
Tuning result check
Check the tuning results.
When the tuning result is not satisfactory, the servo parameters can be returned to the value before the one-touch tuning or
the initial value.
Page 34 Initializing one-touch tuning
10.
End
3 ADJUSTMENT METHOD
3.2 One-touch tuning
3
17
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