YASKAWA E-V Series User Manual page 124

Display on the Digital
Step
Operator
10
(2) Failure in Operation
If "NO-OP" or "Error" blinks during adjustment, the adjustment will be stopped.
Probable Causes of "NO-OP" Blinking
• The main circuit power supply is OFF.
• An alarm or warning has occurred.
• An overtravel has occurred.
• A SigmaWin+ communications error has occurred.
• Gain setting 2 is selected by gain switching.
• Jcalc is set to OFF (mass ratio not calculated) and the tuning-less function is set to effective.
Press the Key and stop the adjustment once, and take a corrective action to enable operation.
Probable Causes of "Error" Blinking and Remedies
Press the Key and stop the adjustment once, and take the following remedies to enable operation.
Error
Travel distance setting
error
An error occurred during
the calculation of the
mass ratio.
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.
Keys
Probable Cause
The travel distance is set to approximately 5
mm or less, which is less than the minimum
adjustable travel distance.
Refer to (3) Errors during Calculation of Mass Ratio.
The positioning completed width is too
small or P control operation (proportional
control) is being used.
Machine vibration is occurring or the posi-
tioning completion signal (/COIN) is turn-
ing ON and OFF.
5.3 Advanced Autotuning (Fn201)
Operation
Press the Key to complete the advanced autotun-
ing operation. The screen in step 1 will appear again.
Corrective Actions
Increase the travel distance. It is recom-
mended to set the travel distance to 90 mm.
Increase the set value for Pn522. If the
mode switch is used, increase the set value
or disable the mode switch.
Increase the set value for Pn522.
When 2 is set to the mode, change the set-
ting to 3 or 1, and perform advanced auto-
tuning again. If there is machine vibration,
suppress the vibration with the anti-reso-
nance control adjustment function and the
vibration suppression function.
5
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