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EN-24
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.
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
Display Meaning Corrective Actions