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(1) Conduct auto-tuning only after the motor has been connected and operation
completely stopped. If auto-tuning is conducted immediately after operation stops, the
presence of a residual voltage may result in abnormal tuning.
(2) Voltage is applied to the motor during tuning even though it barely rotates. During
tuning, “tun1” is displayed on the keypad.
(3) Tuning is performed when the motor starts for the first time after f100 is set to 2.
Tuning is usually completed within three seconds. If it is aborted, the motor will trip
with the display of e-46 and no constants will be set for that motor.
(4) High-speed motors, high-slip motors or other special motors cannot be auto-tuned.
(5) Provide cranes and hoists with sufficient circuit protection such as mechanical
braking. Without sufficient circuit protection, the resulting insufficient motor torque
during tuning could create a risk of machine stalling/falling.
(6) If auto-tuning is impossible or an "e-46" auto-tuning error is displayed.
(7) If the inverter is tripped during auto-tuning because of an output phase failure (e-42),
check if the inverter is connected to the correctly. A check for output phase failures is
made during auto-tuning, regardless of the setting of the output phase failure
detection mode selection parameter (f406).
NO. Parameter Name Setting Range Default
f101 Base frequency 1 25.0~400.0 Hz 50.0
f102 Base frequency voltage1 50~660V varies by model
f103 Motor rated current varies by model varies by model
f104 Motor rated speed 100~15000 rpm varies by model
Set f101 ~f104, as specified on the nameplate of the motor.To use vector control, and
automatic energy saving, motor constant setting (motor tuning) is required.
NO. Parameter Name Setting Range
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General