YASKAWA Sigma-V Series User Manual page 116

3 Utility Function Mode
3.3.27 Advanced Autotuning (Fn201)
(6) Notes on Reference Input-type Advanced Autotuning
Probable Causes of "NO-OP" Blinking
Probable Causes of "Error" Blinking and Remedies
The gain dropped
below the minimum
adjustable gain.
An error occurred
during the
calculation of the
load moment of
inertia ratio/mass
ratio.
Travel distance
setting error
The positioning
completion signal
(/COIN) did not turn
ON within
approximately 10
seconds after
positioning
adjustment was
completed.
3-74
If "NO-OP" or "Error" appear during adjustment, the adjustment will be
stopped.
• 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
Machine vibration is occurring or
the positioning completion signal
(/COIN) is turning ON and OFF.
refer to (7) Errors during Calculation of Load Moment of Inertia
Ratio/Mass Ratio and Corrective Actions.
The travel distance is set to
approximately 0.5 rotation or
less, which is less than the mini-
mum adjustable travel distance.
If the SGMCS servomotor is
used, the travel distance is set to
0.05 rotations.
The positioning completion
width is too small or P control
operation (proportional control)
is being used.
Key to cancel adjustment and remove the causes.
Probable Cause Corrective Actions
Increase the set value for Pn522.
If there is machine vibration, sup-
press the vibration with the anti-
resonance control adjustment
function.
Increase the travel distance. It is
recommended to set the motor
rotations to around 3.
Increase the set value for Pn522.
If the P control is set, disable the
mode switch.