To Exhibit The Best Performance Of The Motor Performance (Offline Auto Tuning) (Pr. 71, Pr. 83, Pr. 84, Pr. 96) - Mitsubishi Electric FR-A700 Instruction Manual

Before operation
3.3.10 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 Motor rated 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, SF-TH, etc.) other than Mitsubishi standard motor, high
·
efficiency motor (SF-JR SF-HR 0.4kW or more), Mitsubishi constant-torque motor (SF-JRCA SF-HRCA four-pole
0.4kW to 55kW) and vector control dedicated motor (SF-V5RU) 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 connect a surge voltage suppression filter (FR-ASF-H) to the 55K or less and sine wave filter (MT-BSL/BSC) to
the 75K or more between the inverter and motor.
62
Magnetic flux Magnetic flux Magnetic flux Sensorless Sensorless Sensorless
Initial
Setting Range
Value
0 to 8, 13 to 18, 20,
0 23, 24, 30, 33, 34, 40, 43,
44, 50, 53, 54
200/400V * 0 to 1000V
60Hz 10 to 120Hz
0
1
0
101
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