Auto-Tuning Fault Detection; Auto-Tuning Codes, Causes, And Possible Solutions - YASKAWA A1000 Series Technical Manual

6.7 Auto-Tuning Fault Detection

6.7 Auto-Tuning Fault Detection
Auto-Tuning faults are shown below. When the following faults are detected, the fault is displayed on the digital operator
and the motor coasts to a stop. Auto-Tuning faults do not trigger an multi-function terminal set for fault or alarm output.
An End error indicates that although Auto-Tuning has completely successful, there is some discrepancy in the
calculations the drive made. If an End
and perform Auto-Tuning again once the problem has been taken care of. If there appears to be no problem despite the
End error being displayed, go ahead and start the application.

◆ Auto-Tuning Codes, Causes, and Possible Solutions

Digital Operator Display
Cause
The torque reference exceeded 20% during
Auto-Tuning.
The results from Auto-Tuning the no-load current
exceeded 80%.
Digital Operator Display
Cause
Motor data entered during Auto-Tuning was
incorrect.
Results from Auto-Tuning are outside the parameter
setting range, assigning the iron-core saturation
coefficient (E2-07, E2-08) a temporary value.
Digital Operator Display
Cause
The correct current rating printed on the nameplate
was not entered into T1-04.
Digital Operator Display
Cause
The slip that was calculated is outside the allowable
range.
Digital Operator Display
Cause
The resistance value that was calculated is outside
the allowable range.
Digital Operator Display
Cause
The leakage inductance value that was calculated is
outside the allowable range.
Digital Operator Display
Cause
The entered no-load current value was outside the
allowable range.
Auto-Tuning results were less than 5% of the motor
rated current.
328
error occurs, check for what might be causing the error using the table below,
Table 6.18 Auto-Tuning Codes, Causes, and Possible Solutions
End1
Excessive V/f Setting (detected only during Rotational Auto-Tuning, and displayed after Auto-Tuning is complete)
• Before Auto-Tuning the drive, verify the information written on the motor nameplate and enter that data to T1-03 through T1-05.
• Enter proper information to parameters T1-03 to T1-05 and repeat Auto-Tuning.
• If possible, disconnect the motor from the load and perform Auto-Tuning. If the load cannot be uncoupled, simply use the Auto-
Tuning results as they are.
End2
Motor Iron-Core Saturation Coefficient (detected only during Rotational Auto-Tuning and displayed after Auto-Tuning is complete)
• Make sure the data entered to the T1 parameters match the information written on the motor nameplate.
• Restart Auto-Tuning and enter the correct information.
• Check and correct faulty motor wiring.
• Disconnect the motor from machine and perform Rotational Auto-Tuning.
End3
Rated Current Setting Alarm (displayed after Auto-Tuning is complete)
• Check the setting of parameter T1-04.
• Check the motor data and repeat Auto-Tuning.
End4 Adjusted Slip Calculation Error
• Make sure the data entered for Auto-Tuning is correct.
• Execute Rotational Auto-Tuning instead. If not possible, try Stationary Auto-Tuning 2.
End5 Resistance Tuning Error
• Double check the data that was entered for the Auto-Tuning process.
• Check the motor and motor cable connection for faults.
End6 Leakage Inductance Alarm
Double check the data that was entered for the Auto-Tuning process.
End7 No-Load Current Alarm
Check and correct faulty motor wiring.
Double check the data that was entered for the Auto-Tuning process.
Error Name
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YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual