YASKAWA Sigma-V Series User Manual page 122

3 Utility Function Mode
3.3.28 Reference Input-type Advanced Autotuning (Fn202)
(5) Notes on Reference Input-type Advanced Autotuning
Probable Causes of "NO-OP" Blinking
Probable Causes of "Error" Blinking and Remedies
The positioning
completion signal
(/COIN) did not turn ON
within approximately 10
seconds after
positioning adjustment
was completed.
The gain dropped
below the minimum
adjustable gain.
3-80
If "NO-OP" or "Error" blinks for approximately two seconds during
adjustment, the adjustment will be stopped.
"NO-OP" or "Error" will be turned OFF after the adjustment is canceled.
• When the main-circuit power is turned OFF.
• When an alarm or a warning occurs.
• When overtravel occurs.
• When a communications error occurs in the SigmaWin.
• When the second gain is selected at gain switching.
• When tuning less function is enabled and the load moment of inertia ratio/
mass ratio is not calculated.
In these cases, press the
Then, retry adjustment.
Press the Key and stop the adjustment once, and take the following
remedies to enable operation.
Error
The positioning completion
width is too small or P control
operation (proportional control)
is being used.
Machine vibration is occurring or
the positioning completion signal
(/COIN) is turning ON and OFF.
Key to cancel adjustment and remove the causes.
Probable Cause Corrective Actions
Increase the set value for Pn522.
If the P control is set, disable the
mode switch.
Increase the set value for Pn522.
If there is machine vibration, sup-
press the vibration with the anti-
resonance control adjustment
function.