Offline Auto Tuning For A Pm Motor (Motor Constant Tuning) - Mitsubishi Electric 800 Series Instruction Manual

13.3
Offline auto tuning for a PM motor (motor constant
tuning)
PM PM PM
The offline auto tuning enables the optimal operation of a PM motor.
• Automatic measurement of motor constants (offline auto tuning) enables optimal operation of motors for PM sensorless
vector control even when motor constants vary or when the wiring distance is long.
For the offline auto tuning under Advanced magnetic flux vector control and Real sensorless vector control, refer to
Pr. Name
71
Applied motor
C100
80
Motor capacity
C101
81
Number of motor poles
C102
9 Electronic thermal O/L
C103 relay
83
Rated motor voltage
C104
84
Rated motor frequency
C105
702
Maximum motor frequency 9999
C106
707
Motor inertia (integer)
C107
724
Motor inertia (exponent)
C108
96
Auto tuning setting/status
C110
90
Motor constant (R1)
C120
92 Motor constant (L1)/d-axis
C122 inductance (Ld)
93 Motor constant (L2)/q-axis
C123 inductance (Lq)
859 Torque current/Rated PM
C126 motor current
706 Induced voltage constant
C130 (phi f)
1412 Motor induced voltage
C135 constant (phi f) exponent
318
13.(C) Motor Constant Parameters

13.3 Offline auto tuning for a PM motor (motor constant tuning)

Initial
Setting range
value
0, 3, 5, 6, 10, 13, 15, 16,
20, 23, 40, 43, 50, 53, 70,
0
73, 1800, 1803, 8090,
*1
8093, 9090, 9093
0.1 to 30 kW
9999
9999
2, 4, 6, 8, 10, 12
9999
9999
Inverter
rated
0 to 500 A
*2
current
200/400/
0 to 1000 V
*3
575 V
10 to 400 Hz
9999
9999
0 to 400 Hz
9999
9999 10 to 999, 9999
9999 0 to 7, 9999
0
1
0
11
*4
9999
0 to 50 Ω, 9999
9999
0 to 500 mH, 9999
9999
0 to 500 mH, 9999
*4
9999
0 to 500 A, 9999
0 to 5000 mV (rad/s)
9999
9999
0 to 2
9999
9999
By selecting a motor, the thermal characteristic and motor
constant of each motor are set.
Set the applied motor capacity.
V/F control
Set the number of motor poles.
V/F control
Set the rated motor current.
Set the rated motor voltage (V).
Set the rated motor frequency (Hz).
Inverter internal data is used.
Set the permissible speed (frequency) of the motor.
The Pr.84 setting is used.
Set the motor inertia.
9999: Inverter internal data is used.
No offline auto tuning
Offline auto tuning is performed without the motor rotating.
Offline auto tuning is performed without the motor rotating
(under V/F control).
*4
Tuning data (The value measured by offline auto tuning is
automatically set.)
*4 9999: Inverter internal data is used.
Set this parameter according to the PM motor
*4
specifications.
The value calculated from the parameter setting for motor
constant is used.
Set the exponent n when the induced voltage constant phi
f (Pr.706) is multiplied by 10
No exponent setting
page
Description
n
.
309.