YASKAWA Sigma-7 SGD7S Series

This concludes the procedure to perform autotuning without a host reference.
9.7.6 Troubleshooting Problems in Autotuning without a Host Reference
The following tables give the causes of and corrections for problems that may occur in
autotuning without a host reference.
Possible Cause Corrective Action
Main circuit power supply is OFF. Turn ON the main circuit power supply.
An alarm or warning occurred. Remove the cause of the alarm or
warning.
Overtraveling occurred. Remove the cause of overtraveling.
The second gains were selected with the
gain selection.
Disable automatic gain switching.
The HWBB was activated. Release the HWBB.
The setting of the travel distance is too
small.
Set the travel distance again in step 6 of
the procedure.
The settings for the tuning-less function
are not correct.
n Disable the tuning-less function
(Pn170 = n.0).
n Enable the tuning-less function (Pn170
= n.1) and specify moment of
inertia estimation.
Error Possible Cause Corrective Action
The gain adjustments were
not successfully completed.
Machine vibration occurs or
the positioning completion
signal is not stable when
the Servomotor stops.
n Increase the setting of
the positioning com-
pleted width (Pn522).
n Change the mode from
2 to 3.
n If machine vibration
occurs, suppress the
vibration with the anti-
resonance control
adjustment and the
vibration suppression
function.
An error occurred during
calculation of the moment
of inertia.
Refer to the following section for troubleshooting informa-
tion.
Ä ‘When an Error Occurs during Calculation of Moment
of Inertia’ page 334
Positioning was not com-
pleted within approximately
10 seconds after position
adjustment was completed.
The positioning completed
width is too narrow or pro-
portional control is being
used.
Increase the setting of the
positioning completed width
(Pn522).
Autotuning without a Host
Reference Was Not Per-
formed
When an Error Occurs
during Execution of Auto-
tuning without a Host Ref-
erence
Sigma-7 Series SERVOPACKs
Tuning
Autotuning without Host Reference > Troubleshooting Problems in Autotuning without a Host Reference
| | PROFINET Communications - SIEP YEUOC7P 02A Revision 0 | en | 333