Mitsubishi Electronics FR-A701 ユーザーズマニュアル
8/28
BCN-C22005-675
*
The initial value differs according to the voltage level. (200V/400V)
(1) Before performing offline auto tuning
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
· 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.
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.
711
Motor d-axis
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.)
(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.)
712
Motor q-axis
inductance Lq decay
ratio
9999
0 to 100%, 9999
721
Starting magnetic
pole position
detection pulse width
9999
0 to 6000µs, 9999
724
Motor inertia
(exponent)
9999
1 to 7
Set the motor inertia.
9999
Uses the inertia of the MM-CF IPM motor
725
Motor protection
current level
9999
0 to 500%
Set the maximum current (OCT) level of the
motor (%).
motor (%).
9999
Uses the maximum current of MM-CF
859
Torque current
9999
0 to 500A
Tuning data
(The value measured by offline auto tuning
is automatically set.)
(The value measured by offline auto tuning
is automatically set.)
9999
Uses the constant of the MM-CF IPM motor
POINT
· 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
· 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 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 use an inverter with a surge voltage suppression filter (FR-ASF-H/FR-BMF-H) connected between the
· Do not use an inverter with a surge voltage suppression filter (FR-ASF-H/FR-BMF-H) connected between the
inverter and the motor.
Parameter
Number
Name
Initial
Value
Setting Range
Description
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