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

6.7 Auto-Tuning Fault Detection

6.7

Auto-Tuning Fault Detection

When the Auto-Tuning faults shown below are detected, the fault is displayed on the digital operator and the motor coasts to
a stop. Auto-Tuning faults do not trigger a multi-function terminal set for fault or alarm output.
An Endo error indicates that although Auto-Tuning has successfully completed, there is some discrepancy in the calculations.
If an Endo error occurs, check for the cause of the error using the table below, and perform Auto-Tuning again after fixing
the problem. Start the application if no problem can be diagnosed despite the existence of the Endo error.
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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.
328
Table 6.17 Auto-Tuning Codes, Causes, and Possible Solutions
Excessive V/f Setting (detected only during Rotational Auto-Tuning, and displayed after Auto-Tuning is
End1
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.
Motor Iron-Core Saturation Coefficient (detected only during Rotational Auto-Tuning and displayed after
End2
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.
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
Error Name
Possible Solutions
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual