YASKAWA F7 User Manual

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Contents

Diagnostics & Troubleshooting 6 - 17Auto-Tuning FaultsAuto-Tuning faults are shown below. When the following faults are detected, the fault is displayed on the Digital Operator andthe motor coasts to a stop. No fault or alarm outputs will occur.Table 6.4 Auto-Tuning Fault Displays and ProcessingDigital OperatorDisplay Description Probable Cause Corrective ActionEr - 01Fault Motor Data Fault•There is an error in the data inputfor Auto-Tuning.•There is an error in the relationshipbetween the motor output and themotor rated current.•There is an error between the no-load current setting and the inputmotor rated current (when Auto-Tuning only line-to-lineresistance is performed for vectorcontrol).• Check Auto-Tuning input data (T1parameters).• Check Drive and motor capacityfor compatibility.• Check motor rated current andno-load current (E2-03 andT1-04).Er - 02Minor Fault Alarm An alarm is detected during Auto-Tuning.• Check Auto-Tuning input data (T1parameters).• Check output/motor wiring.• Check the load.Er - 03STOP key STOP Key Input The STOP key is pressed duringAuto-Tuning, and the Auto-Tuning isinterrupted. –Er - 04Resistance Line-to-Line Resistance FaultAuto-Tuning is not completed withinthe specified time.The Auto-Tuning result is outside theparameter setting range.• Check Auto-Tuning input data (T1parameters).• Check motor wiring.• If the motor and the machine areconnected, disconnect the motorfrom the machine.• For Er-08, if the setting of T1-03 ishigher than the Drive’s inputvoltage, change the input voltagesetting.Er - 05No-Load Current No-Load Current FaultEr - 08Rated Slip Rated Slip FaultEr - 09AccelerateAcceleration FaultDetected only for rotational Auto-Tuning.The motor did not accelerate in thespecified time (C1-01 + 10 seconds).• Increase C1-01 (Accel Time 1)• Increase L7-01 and L7-02(Forward/Reverse Torque Limits)if they are low.• If the motor and load areconnected, disconnect the motorfrom the load.Er - 11Motor SpeedMotor Speed FaultDetected only for rotational Auto-Tuning.The torque reference exceeded 100%during acceleration. Detected whenA1-02 = 2 or 3 (vector control).• Increase C1-01 (Accel Time 1)• Check the input data [particularlythe number of PG pulses (F1-01)and the number of motor poles(E2-04)].• If the motor and load areconnected, disconnect the motorfrom the load.