Changing The Motor Constants (If Setting Motor Constants In The Internal Data Of The Inverter) - Mitsubishi Electric FR-F800 Instruction Manual

(C) Motor constant parameters
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 so on) are used.
Changing the motor constants (If setting motor constants in the internal
data of the inverter)
• Set Pr.71 as follows.
Mitsubishi standard motor
Mitsubishi high-efficiency motor
Mitsubishi constant-torque motor
Mitsubishi high-performance energy-saving motor
Other manufacturer's standard motor
Other manufacturer's constant-torque motor
• 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.
First Second
motor motor
Pr. Pr.
Motor excitation
82 455
current
90 458 Motor constant (R1)
91 459 Motor constant (R2)
Motor constant (L1)/d-
92 460
axis inductance (Ld)
Motor constant (L2)/q-
93 461
axis inductance (Lq)
94 462 Motor constant (X)
Torque current/Rated
859 860
PM motor current
298 560 Frequency search gain

For the FR-F820-02330(55K) lower and FR-F840-01160(55K) or lower.

For the FR-F820-03160(75K) or higher and FR-F840-01800(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:
• 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 so on) are used.
348
PARAMETERS
Motor
SF-JR and SF-TH
SF-JR 4P 1.5 kW or lower
SF-HR
Others
SF-JRCA 4P
SF-TH (constant-torque)
SF-HRCA
Other (SF-JRC, etc.)
SF-PR
―
―
Pr.684 = 0 (initial value)
Name
Setting range
0 to ***, 9999
0 to 32767, 9999
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.)
Setting
Range indication
increments
0 to 500 A, 9999
0 to 3600 A, 9999
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
1
0 to 400 mH, 9999
0 to 6000 mH, 9999
0 to 400 mH, 9999
0 to 100%, 9999
0 to 500 A, 9999
0 to 3600 A, 9999
1 0 to 32767, 9999
Pr.71 setting
3 (4)
23 (24)
43 (44)
3 (4)
13 (14)
53 (54)
13 (14)
73(74)
3 (4)
13 (14)
Pr.684 = 1
Initial
Unit
value
indication
0.01 A
 
0.1 A
 
0.001 Ω
 
0.01 mΩ
 
0.001 Ω
 
0.01 mΩ
 
0.1 mH
 
0.01 mH 9999
 
0.1 mH
 
0.01 mH
 
0.1%

0.01%

0.01 A
 
0.1 A
 
1