Mitsubishi Electric FR-A720-0.4K Instruction Manual page 216

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
Name
Number
1 Maximum frequency
Electronic thermal O/
9
L relay
High speed maximum
18
frequency
71 Applied motor
80 Motor capacity
Number of motor
81
poles
83 Rated motor voltage
Rated motor
84
frequency
90 Motor constant (R1)
Motor constant (L1)/d-
92
shaft inductance
Motor constant (L2)/q-
93
shaft inductance
Auto tuning setting/
96
status
Initial
Setting Range
Value
120/
0 to 120Hz
60Hz
*1
Rated
inverter 0 to 500A
current
120/
120 to 400Hz
60Hz
*1
0 to 8, 13 to 18, 20, 23, 24, 30,
0 33, 34, 40, 43, 44, 50, 53, 54,
330, 333, 334, 8093, 8094
55K or lower
9999 75K or higher
9999
2, 4, 6, 8, 10
9999 12, 14, 16, 18, 20
9999
200/
0 to 1000V
400V
*2
60Hz 10 to 300Hz
55K or lower 0 to 50, 9999
9999
75K or higher
55K or lower (0 to 1000mH),
9999
75K or higher
55K or lower
9999
75K or higher
0
1
0
11
101
7/24
Set the upper limit of the output frequency.
Set the rated motor current.
Set when performing the operation at
120Hz or more. (Limited at 300Hz under
PM sensorless vector control)
Setting a motor type selects its thermal
characteristic and the motor constant.
0.4 to 55kW
Set the applied motor capacity.
0 to 3600kW
V/F control
Set the number of motor poles.
X18 signal-ON:V/F
control
V/F control
Set the rated motor voltage (V).
Set the rated motor frequency (Hz).
(Limited at 120Hz when Pr. 71 is set to a
motor other than IPM)
0 to 400m,
9999
0 to 50,
Tuning data
9999
(The value measured by offline auto tuning
0 to 3600m
is automatically set.)
(0 to 400mH),
9999: Motor constant of the MM-CF IPM
9999
motor. (Except 9999, the set value is the
0 to 50,
motor constant.)
(0 to 1000mH),
9999
0 to 3600m
(0 to 400mH),
9999
Offline auto tuning is not performed
Offline auto tuning is performed without
motor running (other than MM-CF)
Offline auto tuning is performed without
motor running (MM-CF)
Offline auto tuning by rotating a general-
purpose motor (no tuning during PM
sensorless vector control)
P M P M P M
Description
Set 10 + number of
motor poles.
BCN-C22005-634