6.7 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 6.12 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.6.7 Auto-Tuning Fault Detection322 YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
