Mitsubishi Electric 800 Series Instruction Manual page 361

 Changing the motor constants (If setting motor constants in the internal
data of the inverter)
• Set Pr.71 as follows.
Motor
Standard motor
Constant-torque 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.
82 455
90 458
91 459
92 460
93 461
94 462
859 860
298 560
*1 For the FR-F860-00680 or lower.
*2 For the FR-F860-01080 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 motor constant values for standard motors are used.
360
5. PARAMETERS
5.10 (C) Motor constant parameters
3 (4)
13 (14)
3 (4)
13 (14)
Name
Setting range
Motor excitation 0 to ***, 9999
current
Motor constant (R1)
Motor constant (R2)
Motor constant (L1)/d-
axis inductance (Ld)
Motor constant (L2)/q-
axis inductance (Lq)
Motor constant (X)
Torque current/Rated
PM motor current
Frequency search gain 0 to 32767, 9999
Pr.71 setting
Pr.684 = 0 (initial value)
Setting
increments
1
1
Pr.684 = 1
Range indication Unit
indication
*1
0 to 500 A, 9999 0.01 A
*2 *2
0 to 3600 A, 9999 0.1 A
*1
0 to 50 Ω, 9999 0.001 Ω
*2
0 to 400 mΩ, 9999 0.01 mΩ
*1
0 to 50 Ω, 9999 0.001 Ω
*2
0 to 400 mΩ, 9999 0.01 mΩ
*1
0 to 6000 mH, 9999 0.1 mH
*2
0 to 400 mH, 9999 0.01 mH
*1
0 to 6000 mH, 9999 0.1 mH
*2
0 to 400 mH, 9999 0.01 mH
0 to 100%, 9999 *1
0.1%
0.01%
*1
0 to 500 A, 9999 0.01 A
*2 *2
0 to 3600 A, 9999 0.1 A
0 to 32767, 9999 1
Initial
value
*1 9999
*1
*2
*1
*2
*1
*2
*1
*2
*2
*1