Yaskawa AC Drive Z1000 Bypass Technical Manual - Manual (Page 249)

6.7 Auto-Tuning Fault Detection
When the Auto-Tuning faults shown below are detected, the fault is displayed on the 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 in this section, and perform Auto-Tuning again or
manually set the motor parameters after fixing the problem. Start the application if no problem can be diagnosed despite the
existence of the Endo error.
u Auto-Tuning Codes, Causes, and Possible Solutions
Table 6.11 Auto-Tuning Codes, Causes, and Possible Solutions
HOA Keypad Display Error Name
End3 Rated Current Setting Alarm (displayed after Auto-Tuning is complete)
Cause Possible Solutions
The correct current rating printed on the motor
nameplate was not entered into T1-04
• Check the setting of parameter T1-04.
• Check the motor data and repeat Auto-Tuning.
HOA Keypad Display Error Name
End4 Adjusted Slip Calculation Error
Cause Possible Solutions
The calculated slip is outside the allowable range Make sure the data entered for Auto-Tuning is correct.
HOA Keypad Display Error Name
End5 Resistance Tuning Error
Cause Possible Solutions
The calculated resistance value is outside the
allowable range
• Double-check the data entered for the Auto-Tuning process.
• Check the motor and motor cable connection for faults.
HOA Keypad Display Error Name
End7 No-Load Current Alarm
Cause Possible Solutions
The entered no-load current value was outside the
allowable range
Check and correct faulty motor wiring.
Auto-Tuning results were less than 5% of the
motor rated current
Double-check the data entered for the Auto-Tuning process.
HOA Keypad Display Error Name
Er-01 Motor Data Error
Cause Possible Solutions
Motor data or data entered during Auto-Tuning
was incorrect
.
• Check that the motor data entered to T1 parameters matches motor nameplate input before Auto-
Tuning.
• Restart Auto-Tuning and enter the correct information.
Motor output power and motor-rated current
settings (T1-02 and T1-04) do not match
• Check the drive and motor capacities.
• Correct the settings of parameters T1-02 and T1-04.
Motor rated current and detected no-load current
are inconsistent
• Check the motor rated current and no-load current.
• Correct the settings of parameters T1-04 and E2-03.
Base frequency and motor rated speed (T1-05 and
T1-07) do not match
• Correct the settings of parameters T1-05 and T1-07.
• Check that the correct number of poles were entered to T1-06.
HOA Keypad Display Error Name
Er-02 Minor Fault
Cause Possible Solutions
An alarm was triggered during Auto-Tuning Exit the Auto-Tuning menu, check the alarm code, remove the alarm cause, and repeat Auto-Tuning.
6.7 Auto-Tuning Fault Detection
YASKAWA ELECTRIC SIEP YAIZ1B 01D YASKAWA AC Drive – Z1000 Bypass Technical Manual 249
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Diagnostics & Troubleshooting