Auto-Tuning Fault Detection - YASKAWA U1000 Series Technical Manual

6.7 Auto-Tuning Fault Detection

6.7 Auto-Tuning Fault Detection
Auto-Tuning faults in this section are displayed on the digital operator and will cause the motor to coast to a stop.
Auto-tuning faults do not trigger a multi-function digital output set for fault or alarm output.
An (End) error on the digital operator display indicates Auto-Tuning has successfully completed with discrepancies in
the calculations. Check the cause of the (End) error using the tables in this section and perform Auto-Tuning again
after fixing the cause.
The drive may be used in the application if no cause can be identified despite the existence of an (End) error.
An (Er-) error indicates that Auto-Tuning has not completed successfully. Check for the cause of the error using the
tables in this section, and perform Auto-Tuning again after fixing the cause.
◆ 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
A1-02 setting error
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.
Digital Operator Display
Cause
Motor data or data entered during Auto-Tuning was
incorrect.
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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
• Check the setting of parameter A1-02.
• Check the control mode and repeat Auto-Tuning.
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.
Er-01 Motor Data Error
• Check that the motor data entered to T1 parameters matches motor nameplate input before Auto-Tuning.
• Start Auto-Tuning over again and enter the correct information.
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
Error Name
Possible Solutions
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual