Mitsubishi Electric FR-F820-00046 Instruction Manual page 374

Fr-f800 series
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• Set desired values as the motor constant parameters. The display units of the read motor constants can be changed with
Pr.684 Tuning data unit switchover. Setting Pr.684 = "1" disables parameter setting changes.
First motor
Second
Pr.
motor Pr.
82
455
Motor excitation 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
*1
For the FR-F820-02330(55K) or lower, and FR-F840-01160(55K) or lower.
*2
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: To slightly increase the Pr.90 value (5%)
When "2516" is displayed for Pr.90, set 2642 (2516 × 1.05 = 2641.8) in Pr.90.
(The value displayed has been converted into a value for internal use. Therefore, simple addition of a value to the
displayed value does not bring the desired effect.)
• If "9999" is set, tuning data will be invalid and the constant values for Mitsubishi Electric motors (SF-PR, SF-JR, SF-HR, SF-
JRCA, SF-HRCA and so on) are used.
 Changing the motor constants (when setting the Pr.92 and Pr.93 motor
constants in units of Ω)
• Set Pr.71 as follows.
Applied motor
Standard motor
Constant-torque motor
Pr.684 = 0 (initial value)
Name
Setting range
0 to ***, 9999
0 to 32767, 9999 1
Wye connection motor
5
15
Pr.684 = 1
Setting
Range indication
increments
0 to 500 A, 9999
0 to 3600 A, 9999
*1
0 to 50 Ω, 9999
0 to 400 mΩ, 9999
*1
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
0 to 32767, 9999
Pr.71 setting
Delta connection motor
6
16
5.10 (C) Motor constant parameters
Initial
Unit
value
indication
*1
*1
0.01 A
*2
*2
0.1 A
*1
0.001 Ω
*2
*2
0.01 mΩ
*1
0.001 Ω
*2
*2
0.01 mΩ
*1
*1
0.1 mH
9999
*2
*2
0.01 mH
*1
*1
0.1 mH
*2
*2
0.01 mH
*1
0.1%
*2
0.01%
*1
*1
0.01 A
*2
*2
0.1 A
1
5. PARAMETERS
1
2
3
4
5
6
7
8
9
10
373

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