Справочник Пользователя для Mitsubishi Electronics FR-A700

8/24

BCN-C22005-634

*1

Initial values differ according to the inverter capacity. (55K or lower/75K or higher)

*2

The initial value differs according to the voltage level. (200V/400V)

Check the following before performing offline auto tuning.

· The PM sensorless vector control 

should be

 selected.

· A motor should be connected. Note that the motor should be at a stop at a tuning start.
·

The motor capacity should be equal to or one rank lower than the inverter capacity.

· The maximum frequency under PM sensorless vector control should be 300Hz.
· Even if tuning is performed without motor running (Pr. 96 Auto tuning setting/status = "11"), the motor may

run slightly. Therefore, fix the motor securely with a mechanical brake, or before tuning, make sure that
there will be no problem in safety if the motor runs. (Caution is required especially in vertical lift
applications). Note that if the motor runs slightly, tuning performance is unaffected.

· Tuning is not available during position control under PM sensorless vector control.

Tuning data unit 

switchover

0

0

Internal data converted value

1

Displayed in "A, 

, mH, %"

Induced voltage 

constant

9999

0

 to 5000mV • s/rad

Adjust the constant if the current fluctuates 
during operation after tuning.

9999

Constant value calculated based on the 
tuning data

Motor inertia (integer)

9999

10 to 999

Set the motor inertia.

9999

Uses the inertia of the MM-CF IPM motor

Motor d-shaft 

inductance Ld decay 

ratio

9999

0 to 100%, 9999

Tuning data
(The value measured by offline auto tuning 
is automatically set.)
9999: Motor constant of the MM-CF IPM 
motor. (Except 9999, the set value is the 
motor constant.)

Motor q-shaft 

inductance Lq decay 

ratio

9999

0 to 100%, 9999

Starting magnetic 

pole position 

detection pulse width

9999

0 to 6000µs, 9999

Motor inertia 

(exponent)

9999

1 to 7

Set the motor inertia.

9999

Uses the inertia of the MM-CF IPM motor

Motor protection 

current level

9999

0 to 500%

Set the maximum current (OCT) level of the 
motor (%).

9999

Uses the maximum current of MM-CF

Torque current

9999

55K or lower

0 to 500A

Tuning data
(The value measured by offline auto tuning 
is automatically set.)

75K or higher

0 to 3600A

9999

Uses the constant of the MM-CF IPM motor

· The settings are valid only under the PM sensorless vector control.
· When the wiring length between the inverter and the motor is long (30m or longer as a reference), use the

offline auto tuning function to drive the motor in the optimum operation characteristic.

· The offline auto tuning enables the operation with an IPM motor other than MM-CF.
· 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.)

· Reading/writing of motor constants tuned by offline auto tuning are enabled. You can copy the offline auto

tuning data (motor constants) to another inverter with the PU (FR-DU07/FR-PU07).

· 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/FR-BMF-H) to the 55K or lower and sine wave

filter (MT-BSL/BSC) to the 75K or higher between the inverter and motor.

bcnc22005634.fm  8 ページ  ２０１２年７月３日　火曜日　午前９時４３分