5.5 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. Check the cause of the Endo error using the tables in this section and perform Auto-Tuning again after fixingthe cause.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 5.5 Auto-Tuning Codes, Causes, and Possible SolutionsDigital Operator Display Error NameEnd1 Excessive V/f Setting (detected only during Rotational Auto-Tuning and displayed after Auto-Tuning iscomplete)Cause Possible SolutionsThe torque reference exceeded 20% duringAuto-Tuning. • Prior to Auto-Tuning, verify the information on the motor nameplate.• Enter proper values from motor nameplate to parameters T1-02 and T1-04 and repeat Auto-Tuning.• If possible, disconnect the motor from the load and perform Auto-Tuning. If the load cannot be uncoupled,use the current Auto-Tuning results.The results from Auto-Tuning the no-loadcurrent exceeded 80%.Digital Operator Display Error NameEnd2 Motor Iron-Core Saturation Coefficient (detected only during Rotational Auto-Tuning and displayed afterAuto-Tuning is complete)Cause Possible SolutionsMotor data entered during Auto-Tuningwas incorrect.• 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.Results from Auto-Tuning are outside theparameter setting range, assigning the iron-core saturation coefficients (E2-07 andE2-08) to temporary values.• Check and correct faulty motor wiring.• Disconnect the motor from machine and perform Rotational Auto-Tuning.Digital Operator Display Error NameEnd3 Rated Current Setting Alarm (displayed after Auto-Tuning is complete)Cause Possible SolutionsThe correct current rating printed on themotor nameplate was not entered intoT1-04.• Check the setting of parameter T1-04.• Check the motor data and repeat Auto-Tuning.Digital Operator Display Error NameEnd4 Adjusted Slip Calculation ErrorCause Possible SolutionsThe calculated slip is outside the allowablerange.• Make sure the data entered for Auto-Tuning is correct.• If possible, perform Rotational Auto-Tuning. If not possible, perform Stationary Auto-Tuning 2.Digital Operator Display Error NameEnd5 Resistance Tuning ErrorCause Possible SolutionsThe calculated resistance value is outsidethe allowable range.• Double-check the data entered for the Auto-Tuning process.• Check the motor and motor cable connection for faults.Digital Operator Display Error NameEnd6 Leakage Inductance AlarmCause Possible SolutionsThe calculated leakage inductance value isoutside the allowable range. Double-check the data entered for the Auto-Tuning process.5.5 Auto-Tuning Fault Detection150 YASKAWA ELECTRIC TOEP YAIP1U 01B YASKAWA AC Drive - P1000 Quick Start Guide
