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Mitsubishi Electronics FR-A701 ユーザーズマニュアル

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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
P M
P M
P M
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