5.6.5 Troubleshooting Problems In Autotuning With A Host Reference; Automatically Adjusted Function Settings - YASKAWA SGD7S series Product Manual

5.6 Autotuning with a Host Reference

5.6.5 Troubleshooting Problems in Autotuning with a Host Reference

11.
When tuning has been completed, click the Finish Button.
The results of tuning will be set in the parameters and you will return to the Tuning Dialog Box.
This concludes the procedure to perform autotuning with a host reference.
5.6.5 Troubleshooting Problems in Autotuning with a Host
Reference
The following tables give the causes of and corrections for problems that may occur in autotun-
ing with a host reference.
 Autotuning with a Host Reference Was Not Performed
Main circuit power supply is OFF.
An alarm or warning occurred.
Overtraveling occurred.
The second, third, or fourth gains were selected with
the gain selection.
The HWBB was activated.
 Troubleshooting Errors
The gain adjustments
were not successfully
completed.
Positioning was not
completed within
approximately 10
seconds after posi-
tion adjustment was
completed.
 Adjustment Results Are Not Satisfactory for Position Control
You may be able to improve the adjustment results by changing the settings of the positioning
completed width (Pn522) and the electronic gear ratio (Pn20E/Pn210).
If satisfactory results are still not possible, adjust the overshoot detection level (Pn561). That
may improve the adjustment results.
• Pn561 = 100% (default setting)
This will allow tuning with overshooting that is equivalent to the positioning completed width.
• Pn561 = 0%
This will allow tuning to be performed without overshooting within the positioning completed
width, but the positioning completed width may be extended.
Pn561
5.6.6

Automatically Adjusted Function Settings

These function settings are the same as for autotuning without a host reference. Refer to the
following section.
5.5.6 Automatically Adjusted Function Settings on page 5-26
5-34
Possible Cause
Error Possible Cause
Machine vibration
occurs or positioning
completion is not stable
when the Servomotor
stops.
The positioning com-
pleted width is too nar-
row or proportional
control is being used.
Overshoot Detection Level
Setting Range Setting Unit
0 to 100
Turn ON the main circuit power supply.
Remove the cause of the alarm or warning.
Remove the cause of overtraveling.
Select the first gains.
Release the HWBB.
• Increase the setting of the positioning completed width
(Pn522).
• Change the mode from 2 to 3.
• If machine vibration occurs, suppress the vibration with
the anti-resonance control function and the vibration
suppression function.
• Increase the setting of the positioning completed width
(Pn522).
• Set V_PPI to 0 in the servo command output signals
(SVCMD_IO).
Default Setting
1% 100
Corrective Action
Corrective Action
Speed Position
When Enabled Classification
Immediately
Torque
Setup