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7/28 BCN-C22005-675
1.3 Offline auto tuning for an IPM motor (motor constant tuning)
(Pr.1
, Pr.9, Pr.18, Pr.71, Pr.80, Pr.81, Pr.83, Pr.84, Pr.90, Pr.92, Pr.93, Pr.96,
Pr.684, Pr.706, Pr.707, Pr.711, Pr.712, Pr.721, Pr.724, Pr.725, Pr.859)
The offline auto tuning for an IPM motor enables the optimal operation of an IPM motor.
What is offline auto tuning?
Under PM sensorless vector control, setting motor constants automatically (offline auto tuning) enables
optimal operation of motors even when motor constants vary or when the wiring distance is long. The offline
auto tuning also enables the operation with an IPM motor other than MM-CF.
Parameter
Number
Name
Initial
Value
Setting Range Description
1 Maximum frequency
120Hz
0
to
120Hz
Set the upper limit of the output frequency.
9
Electronic thermal O/
L relay
Rated
inverter
current
0 to 500A Set the rated motor current.
18
High speed maximum
frequency
120Hz
120 to 400Hz
Set when performing the operation at
120Hz or more. (Limited at 300Hz under
PM sensorless vector control)
71 Applied motor
0
0 to 8, 13 to 18, 30, 33, 34, 40,
43, 44, 50, 53, 54, 330, 333,
334, 8093, 8094
Setting a motor type selects its thermal
characteristic and the motor constant.
80 Motor capacity
9999
0.4 to 55kW Set the applied motor capacity.
9999 V/F control
81
Number of motor
poles
9999
2, 4, 6, 8, 10 Set the number of motor poles.
12, 14, 16, 18, 20
X18 signal-ON:V/F
control
Set 10 + number of
motor poles.
9999 V/F control
83 Rated motor voltage
200/
400V
*
0 to 1000V Set the rated motor voltage (V).
84
Rated motor
frequency
60Hz 10 to 300Hz
Set the rated motor frequency (Hz).
(Limited at 120Hz when Pr. 71 is set to a
motor other than IPM)
90 Motor constant (R1)
9999 0 to 50, 9999
Tuning data
(The value measured by offline auto tuning
is automatically set.)
9999: Motor constant of the MM-CF IPM
motor. (Except 9999, the set value is the
motor constant.)
92
Motor constant (L1)/d-
axis inductance
9999
0 to 50,
(0 to 1000mH), 9999
93
Motor constant (L2)/q-
axis inductance
9999
0 to 50
,
(0 to 1000mH)
,
9999
96
Auto tuning setting/
status
0
0 Offline auto tuning is not performed
1
Offline auto tuning is performed without
motor running (other than MM-CF)
11
Offline auto tuning is performed without
motor running (MM-CF)
101
Offline auto tuning by rotating a general-
purpose motor (no tuning during PM
sensorless vector control)
684
Tuning data unit
switchover
0
0 Internal data converted value
1 Displayed in "A, , mH, %"
706
Induced voltage
constant
9999
0
to 5000mV • s/rad
Adjust the constant if the current fluctuates
during operation after tuning.
9999
Constant value calculated based on the
tuning data
707 Motor inertia (integer)
9999
10 to 999 Set the motor inertia.
9999 Uses the inertia of the MM-CF IPM motor
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