‹ Autotuning Faults Autotuning faults are shown below. When the following faults are detected, the fault is displayed on the digital operator and the motor coasts to stop. No fault or alarm outputs will be operated. EN-24 Display Meaning Corrective Actions OPE08 Constant Selection Function Selection Error A setting has been made that is applicable with the cur- rent control method. Example: A function used only with open loop vector control was selected for V/f control. Verify the control method and the function. OPE010 V/f Ptrn Setting V/f Parameter Setting Error Check parameters (E1-). A frequency/voltage value may be set higher than the maximum frequency/voltage.
Display Meaning Corrective Actions Er-01 Fault Motor data fault • Check the input data. • Check the Inverter and motor capacity. • Check the motor rated current and no-load current set- ting. Er-02 Minor Fault Alarm • Check the input data. • Check wiring and the machine. • Check the load. Er-03 STOP key STOP key input - Er-04 Resistance Line-to-Line Resistance Fault Autotuning result is outside the parameter setting range. • Check the input data. • Check the motor wiring. • If the motor is connected to the machine, disconnect it. • If the setting of T1-03 is higher than the Inverter input power supply voltage (E1-01), change the input data.
Er-05 No-Load Current No-Load Current Fault Autotuning result is outside the parameter setting range. Er-08 Rated slip Rated Slip Fault Autotuning result is outside the parameter setting range. Er-09 Accelerate Acceleration Fault (Rotating autotuning only) The motor did not accelerate in the specified time (C1-10+10sec.) • Increase C1-01(Acceleration time) • Increase L7-01 and L7-02 (Torque limits) • If the motor is connected to the machine, disconnect it. Er-11 Motor Speed Motor Speed Fault (Rotating autotuning only) The torque reference exceeded 100% during accel- eration. Deteceted only when A1-02 = 2 or 3 (Vector control modes). • If the motor is connected to the machine, disconnect it.
• Increase C1-01 • Check the input data (particularly the number of PG pulses and the number of motor poles) Er-12 I-det. Circuit Current Detection Fault • The current exceeded the motor rated current. • Any of U/T1, V/T2 and W/T3 has open-phase. Check wiring of the Inverter and the mounting. Er-13 Leakage Induc- tance Fault Leakage Inductance Fault Autotuning result is outside the parameter setting range. Check motor wiring. End-1 V/f Over Setting Rated Current Setting Alarm Displayed after auto-tuning is complete During auto-tuning, the measured value of motor rated current (E2-01) was higher than the set value. Check the motor rated current value.
End-2 Saturation Motor Core Saturation Alarm (only for rotating autotuning) • Check the input data • Check the motor wiring. • If the motor is connected to the machine, disconnect it. End-3 Rated FLA Alm Rated Current Setting Alarm During autotuning the measured value of motor rated current (E2-01) was greater than the set value. Check the motor rated current value