Mitsubishi Electric FR-A820-00046 Instruction Manual page 622

(C) Motor constant parameters
Pr.
458
C220
459
C221
460
C222
461
C223
462
C224
455
C225
860
C226
560
A712
For FR-A820-00077(0.75K) or lower and FR-A840-00038(0.75K) or lower, it is set to 85% of the
inverter rated current.
For the FR-A820-03160(55K) or lower and FR-A840-01800(55K)or lower.
For the FR-A820-03800(75K) or higher and FR-A840-02160(75K)or higher.
Differs according to the voltage class. (200 V/400 V)
The setting range and unit change according to the Pr. 71 (Pr. 450) setting.
NOTES The function is enabled under Advanced magnetic flux vector control, Real sensorless vector con-
trol, and vector control.
Even if a motor other than Mitsubishi standard motors (SF-JR 0.4 kW or higher), high-efficiency
motors (SF-HR 0.4 kW or higher), Mitsubishi constant-torque motors (SF-JRCA 4P, SF-HRCA 0.4 kW
to 55 kW), Mitsubishi high-performance energy-serving motor (SF-PR), or vector control dedicated
motors (SF-V5RU (1500 r/min series)), such as other manufacturers' induction motors, SF-JRC, SF-
TH, etc., is used, or when the wiring length is long (approx. 30 m or longer), a motor can run with
the optimum operation characteristics by using the offline auto tuning function.
Tuning is enabled even when a load is connected to the motor.
During offline auto tuning, the motor rotation can be locked (Pr. 96 = "1") or unlocked (Pr. 96 =
"101"). The tuning is more accurate when the motor can rotate (unlocked).
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.
5 - 442
Initial
Name
value
Second motor
9999
constant (R1)
Second motor
9999
constant (R2)
Second motor
constant (L1) / d- 9999
shaft inductance (Ld)
Second motor
constant (L2) / q- 9999
shaft inductance (Lq)
Second motor
9999
constant (X)
Second motor
9999
excitation current
Second motor
torque current/
9999
Rated PM motor
current
Second frequency
9999
search gain
Setting range Description
0 to 50 Ω, 9999
0 to 400 mΩ, 9999
0 to 50 Ω, 9999
0 to 400 mΩ, 9999
0 to 6000 mH, 9999
0 to 400 mH, 9999 Tuning data of the second motor
(The value measured by offline auto tuning
0 to 6000 mH, 9999
is automatically set.)
9999: Uses the constant value of Mitsubishi
0 to 400 mH, 9999
motor (SF-PR, SF-JR, SF-HR, SF-JRCA,
SF-HRCA and so on).
0 to 100%, 9999
0 to 500 A, 9999
0 to 3600 A, 9999
0 to 500 A, 9999
0 to 3600 A, 9999
The offline auto tuning automatically sets
0 to 32767 the gain required for the frequency search
of the second motor.
Uses the constant value of Mitsubishi motor
9999 (SF-PR, SF-JR, SF-HR, SF-JRCA, SF-HRCA and
so on).
Parameters