To Exhibit The Best Performance Of The Motor Performance (Offline Auto Tuning) - Mitsubishi Electric FR-A701 Instrucion Manual

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4.3.10 To exhibit the best performance of the motor performance (offline auto tuning)

(Pr. 71, Pr. 83, Pr. 84, Pr. 96)
The motor performance can be maximized with offline auto tuning.
• What is offline auto tuning?
When performing advanced magnetic flux vector control, real sensorless vector control or vector control, the
motor can be run with the optimum operating characteristics by automaticaly measuring the motor constants
(offline auto tuning) even when each motor constants differs, other manufacturer's motor is used, or the wiring
length is long.
Parameter
Name
Number
71
Applied motor
83
Rated motor voltage
84
Rated motor frequency
Auto tuning setting/
96
status
POINT
This function is made valid only when a value other than "9999" is set in Pr. 80 and Pr. 81 and advanced magnetic
·
flux vector control, real sensorless vector control or vector control is selected.
You can copy the offline auto tuning data (motor constants) to another inverter with the PU (FR-DU07/FR-PU07).
·
·
Even when motors (other manufacturer's motor, SF-JRC, etc.) other than Mitsubishi standard motor, high
efficiency motor (SF-JR SF-HR 3.7kW or more), Mitsubishi constant-torque motor (SF-JRCA four-pole, SF-HRCA
3.7kW or more) and vector control dedicated motor (SF-V5RU (1500r/min series)) are used or the wiring length is
long, using the offline auto tuning function runs the motor with the optimum operating characteristics.
Tuning is enabled even when a load is connected to the motor. (As the load is lighter, tuning accuracy is higher.
·
Tuning accuracy does not change even if the inertia is large.)
·
For the offline auto tuning, you can select either the motor non-rotation mode (Pr. 96 = "1") or rotation mode (Pr. 96
= "101").
The rotation mode has higher tuning accuracy than the non-rotation mode.
·
Reading/writing/copy of motor constants tuned by offline auto tuning are enabled.
·
The offline auto tuning status can be monitored with the PU (FR-DU07/FR-PU07/FR-PU04).
·
· Do not use an inverter with a surge voltage suppression filter (FR-ASF-H) connected between the inverter and motor.
Magnetic flux
Magnetic flux
Magnetic flux
Sensorless
Sensorless
Sensorless
Initial
Setting Range
Value
0 to 8, 13 to 18,
0
30, 33, 34, 40,
43, 44, 50, 53, 54
200/400V *
0 to 1000V
60Hz
10 to 120Hz
0
0
1
101
Before operation
Vector
Vector
Vector
Description
By selecting a standard motor or constant torque
motor, thermal characteristic and motor constants
of each motor are set.
Set the rated motor voltage(V).
* The initial value differs according to the voltage
level. (200V/400V)
Set the rated motor frequency (Hz).
Offline auto tuning is not performed
Offline auto tuning is performed without motor
running
Offline auto tuning is performed with motor running
4
71

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