Offline Auto Tuning - Mitsubishi Electric 800 Series Instruction Manual

(C) Motor constant parameters
5.13.2

Offline auto tuning

The offline auto tuning enables the optimal operation of an motor.
• What is offline auto tuning?
Under Advanced magnetic flux vector control, real sensor vector control or vector control operation, measuring motor
constants automatically (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
C102 poles
9 Electronic thermal O/
C103 L relay
83
Rated motor voltage
C104
84 Rated motor
C105 frequency
707 Motor inertia
C107 (integer)
724 Motor inertia
C108 (exponent)
96 Auto tuning setting/
C110 status
90
Motor constant (R1)
C120
91
Motor constant (R2)
C121
Motor constant (L1)/
92
d-axis inductance
C122
(Ld)
Motor constant (L2)/
93
q-axis inductance
C123
(Lq)
94
Motor constant (X)
C124
82 Motor excitation
C125 current
859 Torque current/Rated
C126 PM motor current
298 Frequency search
A711 gain
426
PARAMETERS
Magnetic flux Magnetic flux Magnetic flux
page 436.
Initial
Setting range
value
0
0
1
0 to 6, 13 to 16, 30, 33, 34,
0 8090, 8093, 8094, 9090, 9093,
9094
0.4 to 55 kW

9999 0 to 3600 kW

9999
2, 4, 6, 8, 10, 12
9999
9999
Inverter 0 to 500 A

rated
0 to 3600 A

current

575 V 0 to 1000 V
10 to 400 Hz
9999
9999
9999 10 to 999, 9999
9999 0 to 7, 9999
0
1
0
11
101
0 to 50 Ω, 9999
9999
0 to 400 mΩ, 9999
0 to 50 Ω, 9999
9999
0 to 400 mΩ, 9999
0 to 6000 mH, 9999
9999
0 to 400 mH, 9999
0 to 6000 mH, 9999
9999
0 to 400 mH, 9999
9999 0 to 100%, 9999
0 to 500 A, 9999
9999
0 to 3600 A, 9999
0 to 500 A, 9999
9999
0 to 3600 A, 9999
0 to 32767
9999
9999
Sensorless Sensorless Sensorless Vector Vector Vector
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
or vector control dedicated motor selected by
Pr.71.
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
Performs offline auto tuning by rotating the motor
 
 
 
 
 
Tuning data
 
(The value measured by offline auto tuning is
  automatically set.)
9999: Uses the constant value of standard motor
 
or vector control dedicated motor selected by
Pr.71.

 
 


The offline auto tuning automatically sets the
gain required for the frequency search.
Uses the constant value of standard motor or
vector control dedicated motor selected by Pr.71.
Description
436)