Mitsubishi Electric 800 Series Instruction Manual page 354

5.10.2 Offline auto tuning
Magnetic flux Magnetic flux Magnetic flux
The offline auto tuning enables the optimal operation of an motor.
• Under Advanced magnetic flux vector control, automatic measurement of motor constants (offline auto tuning) enables
optimal operation of motors even when motor constants vary, when a motor of another company is used, or when the wiring
distance is long.
For the offline auto tuning for a PM motor, refer to
Pr. Name
684 Tuning data unit
C000 switchover
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
707 Motor inertia (integer)
C107
724 Motor inertia (exponent) 9999
C108
96 Auto tuning setting/
C110 status
90 Motor constant (R1)
C120
91 Motor constant (R2)
C121
92 Motor constant (L1)/d-
C122 axis inductance (Ld)
93 Motor constant (L2)/q-
C123 axis inductance (Lq)
94 Motor constant (X)
C124
82 Motor excitation current 9999
C125
859 Torque current/Rated
C126 PM motor current
298 Frequency search gain
A711
450 Second applied motor
C200
page 363.
Initial value Setting range
0 0
1
0 0 to 6, 13 to 16, 8090, 8093,
8094, 9090, 9093, 9094
9999
*1
0.4 to 55 kW
*2
0 to 3600 kW
9999
9999 2, 4, 6, 8, 10, 12
9999
Inverter
*1
0 to 500 A
rated
*2
0 to 3600 A
current
575 V 0 to 1000 V
9999 10 to 400 Hz
9999
9999 10 to 999, 9999
0 to 7, 9999
0 0
1
11
101
9999
*1 *3
0 to 50 Ω, 9999
0 to 400 mΩ, 9999
9999
*1 *3
0 to 50 Ω, 9999
0 to 400 mΩ, 9999
9999
0 to 6000 mH, 9999
0 to 400 mH, 9999
9999
0 to 6000 mH, 9999
0 to 400 mH, 9999
9999
*3
0 to 100%, 9999
*1 *3
0 to 500 A, 9999
0 to 3600 A, 9999
9999
*1*3
0 to 500 A, 9999
0 to 3600 A, 9999
9999 0 to 32767
9999
9999 0, 1, 3 to 6, 13 to 16, 8090, 8093,
8094, 9090, 9093, 9094
9999
Internal data converted value
The value is indicated with "A, Ω, mH or %".
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).
Use the value set in Pr.3 Base frequency.
Set the motor inertia.
9999: Uses the constant value of standard motor.
No offline auto tuning
Performs offline auto tuning without rotating the
motor
Performs offline auto tuning without rotating the
motor (V/F control)
(Refer to page 363)
Performs offline auto tuning by rotating the motor
Tuning data
(The value measured by offline auto tuning is
*2 *3
automatically set.)
9999: Uses the constant value of standard motor.
*2 *3
*1 *3
*2 *3
*1 *3
*2 *3
*2 *3
*2*3
The offline auto tuning automatically sets the gain
required for the frequency search.
Uses the constant value of standard motor.
Set this parameter when using the second motor.
(the same specifications as Pr.71).
The function is disabled.
5.10 (C) Motor constant parameters
Description
5. PARAMETERS
3
4
5
5
5
6
7
8
9
10
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