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E6580757
F-37
6
[Parameter setting]
Title Function Adjustment range Default setting
Auto-tuning
0: Auto-tuning disabled (Use of internal parameters)
1: Application of individual settings of ∼
2: Auto tuning enabled (returns to "1" after auto-tuning)
0
Set to " ".
Set
to " " if the motor capacity is one size smaller than the applicable rated capacity of the inverter.
✩ Precautions on auto-tuning
(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.
(3) Tuning is usually completed within three seconds. If it is aborted, the motor will trip with the dis-
play of " " and no constants will be set for that motor.
(4) High-speed motors, high-slip motors or other special motors cannot be auto-tuned. For these
motors, perform manual tuning using Selection 3 described below.
(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 " " auto-tuning error is displayed, perform manual tuning
with Selection 3.
[Selection 3: Setting vector control and manual tuning independently]
If an " " tuning error is displayed during auto-tuning or when vector control characteristics are to be
improved, independent motor constants can be set.
Title Function Adjustment range Default setting
Auto-tuning
0: Auto-tuning disabled (Use of internal pa-
rameters)
1: Application of individual settings of
∼
2: Auto-tuning enabled (returns to "1" after
auto-tuning)
0
Slip frequency
0.0 ∼ 10.0 (Hz)
*
Motor primary constant
0 ∼ 255
*
Motor secondary constant
0 ∼ 255
*
Motor excitation constant
0 ∼ 255
*
Magnification of load inertia
moment
0 ∼ 200 (time)
0
Rated capacity ratio of motor
to inverter
0: Same capacity as inverter
1: One size smaller than inverter
0
* The default settings of the above parameters vary with capacity. See section 11.