5.7 Auto-Tuning Fault DetectionAuto-Tuning faults in this section are displayed on the digital operator and will cause the motor to coast to a stop. Auto-Tuningfaults do not trigger a multi-function digital output set for fault or alarm output.An Endo error on the digital operator display indicates Auto-Tuning has successfully completed with discrepancies in thecalculations. Restart Auto-Tuning after fixing the cause of the Endo error.The drive may be used in the application if no cause can be identified despite the existence of an Endo error.An Ero error indicates that Auto-Tuning has not completed successfully. Check for the cause of the error using the tables inthis section, and perform Auto-Tuning again after fixing the cause.u Auto-Tuning Codes, Causes, and Possible SolutionsTable 5.13 Auto-Tuning Codes, Causes, and Possible SolutionsHOA Keypad Display Error NameEnd3 Rated Current Setting Alarm (displayed after Auto-Tuning is complete)Cause Possible SolutionsThe correct current rating printed on the motornameplate 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 NameEnd4 Adjusted Slip Calculation ErrorCause Possible SolutionsThe calculated slip is outside the allowable range Make sure the data entered for Auto-Tuning is correct.HOA Keypad Display Error NameEnd5 Resistance Tuning ErrorCause Possible SolutionsThe calculated resistance value is outside theallowable range• Double-check the data entered for the Auto-Tuning process.• Check the motor and motor cable connection for faults.HOA Keypad Display Error NameEnd7 No-Load Current AlarmCause Possible SolutionsThe entered no-load current value was outside theallowable range Check and correct faulty motor wiring.Auto-Tuning results were less than 5% of themotor rated current Double-check the data entered for the Auto-Tuning process.HOA Keypad Display Error NameEr-01 Motor Data ErrorCause Possible SolutionsMotor data or data entered during Auto-Tuningwas incorrect• Make sure motor data entered to T1-oo match motor nameplate information.• Restart Auto-Tuning and enter the correct information.Motor output power and motor-rated currentsettings (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 currentare 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 andT1-07) do not match• Correct the settings of parameters T1-05 and T1-07.• Check that the correct number of poles were entered to T1-06.5.7 Auto-Tuning Fault DetectionYASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive – Z1000 User Manual 2295 Troubleshooting
