Mitsubishi Electric FR-A800, Instruction Manual

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(C) Motor constant parameters Parameters
5 - 442
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.
458
C220
Second motor
constant (R1)
9999
0 to 50 Ω, 9999
,
Tuning data of the second motor
(The value measured by offline auto tuning
is automatically set.)
9999: Uses the constant value of Mitsubishi
motor (SF-PR, SF-JR, SF-HR, SF-JRCA,
SF-HRCA and so on).
0 to 400 mΩ, 9999
,
459
C221
Second motor
constant (R2)
9999
0 to 50 Ω, 9999
,
0 to 400 mΩ, 9999
,
460
C222
Second motor
constant (L1) / d-
shaft inductance (Ld)
9999
0 to 6000 mH, 9999
,
0 to 400 mH, 9999
,
461
C223
Second motor
constant (L2) / q-
shaft inductance (Lq)
9999
0 to 6000 mH, 9999
,
0 to 400 mH, 9999
,
462
C224
Second motor
constant (X)
9999 0 to 100%, 9999
,
455
C225
Second motor
excitation current
9999
0 to 500 A, 9999
,
0 to 3600 A, 9999
,
860
C226
Second motor
torque current/
Rated PM motor
current
9999
0 to 500 A, 9999
,
0 to 3600 A, 9999
,
560
A712
Second frequency
search gain
9999
0 to 32767
The offline auto tuning automatically sets
the gain required for the frequency search
of the second motor.
9999
Uses the constant value of Mitsubishi motor
(SF-PR, SF-JR, SF-HR, SF-JRCA, SF-HRCA and
so on).
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.
Pr. Name
Initial
value
Setting range Description