Mitsubishi FR-A800

(C) Motor constant parameters
PARAMETERS
449
5
GROUP
C
NOTE
• If "9999" is set, tuning data will be invalid and the constant values for Mitsubishi motors (SF-PR, SF-JR, SF-HR, SF-JRCA,
SF-HRCA and SF-V5RU (1500 r/min series) and so on) are used.
Changing the motor constants (If setting motor constants in the internal
data of the inverter)
•Set Pr.71 as follows.
• Set given values as the motor constant parameters. The displayed increments of the read motor constants can be changed
with Pr.684 Tuning data unit switchover.
 For the FR-A820-03160(55K) lower and FR-A840-01800(55K) or lower.
 For the FR-A820-03800(75K) or higher and FR-A840-02160(75K) or higher.
NOTE
• As the motor constants measured in the offline auto tuning have been converted into internal data (****), refer to the following
setting example when making setting:
• Setting example: To slightly increase the Pr.90 value (5%)
If Pr.90 = "2516" is displayed,
the value is calculated with 2516  1.05 = 2641.8. Therefore set Pr.90 = "2642".
(The value displayed has been converted into a value for internal use. Hence, simple addition of a given
value to the displayed value has no significance.)
• If "9999" is set, tuning data will be invalid and the constant values for Mitsubishi motors (SF-PR, SF-JR, SF-HR, SF-JRCA,
SF-HRCA and SF-V5RU (1500 r/min series) and so on) are used.
Motor Pr.71 setting
Mitsubishi standard motor
Mitsubishi high-efficiency motor
SF-JR and SF-TH 3 (4)
SF-JR 4P 1.5 kW or lower 23 (24)
SF-HR 43 (44)
Others 3 (4)
Mitsubishi constant-torque motor
SF-JRCA 4P
SF-TH (constant-torque)
13 (14)
SF-HRCA 53 (54)
Other (SF-JRC, etc.) 13 (14)
Mitsubishi high-performance energy-saving motor SF-PR 73(74)
Vector control dedicated motor
SF-V5RU (1500 r/min series)
SF-THY
33 (34)
SF-V5RU (other than the 1500 r/min series) 13 (14)
Other manufacturer's standard motor  3 (4)
Other manufacturer's constant-torque motor  13 (14)
First
motor
Pr.
Second
motor
Pr.
Name
Pr.684 = 0 (initial value) Pr.684 = 1
Initial
value
Setting range
Setting
increments
Range indication
Unit
indication
82 455
Motor excitation
current
0 to ***, 9999 1
0 to 500 A, 9999
 0.01 A
9999
0 to 3600 A, 9999
 0.1 A
90 458 Motor constant (R1)
0 to 50 , 9999
 0.001 
0 to 400 m, 9999 0.01 m
91 459 Motor constant (R2)
0 to 50 , 9999
 0.001 
0 to 400 m, 9999 0.01 m
92 460
Motor constant (L1)/d-
axis inductance (Ld)
0 to 6000 mH, 9999
 0.1 mH
0 to 400 mH, 9999 0.01 mH
93 461
Motor constant (L2)/q-
axis inductance (Lq)
0 to 6000 mH, 9999
 0.1 mH
0 to 400 mH, 9999 0.01 mH
94 462 Motor constant (X) 0 to 100%, 9999
0.1%

0.01%
859 860
Torque current/Rated
PM motor current
0 to 500 A, 9999
 0.01 A
0 to 3600 A, 9999 0.1 A
298 560 Frequency search gain 0 to 32767, 9999 1 0 to 32767, 9999 1