Mitsubishi Electric 800 Series Instruction Manual page 439

(C) Motor constant parameters
Pr. Name
739 Second motor Ld decay
C231 ratio
740 Second motor Lq decay
C232 ratio
741 Second starting resistance
C282 tuning compensation
742 Second motor magnetic
C285 pole detection pulse width
746 Second motor protection
C233 current level

For FR-A860-00027, it is set to 85% of the inverter rated current.

For the FR-A860-01080 or lower.

For the FR-A860-01440 or higher.

The setting range and unit change according to the Pr.71 (Pr.450) setting.
POINT POINT
• The settings are valid under the PM sensorless vector control.
• The offline auto tuning enables the operation with SPM motors and IPM motors. (When a PM motor is used, always perform
the offline auto tuning.)
• Tuning is enabled even when a load is connected to the motor.
• Reading/writing of the motor constants tuned by offline auto tuning are enabled. The offline auto tuning data (motor
constants) can be copied to another inverter with the operation panel.
• The offline auto tuning status can be monitored with the operation panel and the parameter unit.
438
PARAMETERS
Initial
Setting range
value
9999 0 to 100%, 9999
9999 0 to 100%, 9999
9999 0 to 200%, 9999
0 to 6000 μs,
9999
10000 to 16000 μs, 9999
100 to 500%
9999
9999
Description
Tuning data of the second motor.
(The value measured by offline auto
tuning is automatically set.)
9999: The inverter internal data is used.
Set the maximum current (OCT) level of
the second motor.
Maximum current level of the motor:
200%