Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 670 / 1218

(C) Motor constant parameters Parameters
5 - 468
●
Set a given value as the motor constant parameter. 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.
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 Ω, 9999 0.001 Ω
0 to 400 mΩ, 9999 0.01 mΩ
91 459 Motor constant (R2)
0 to 50 Ω, 9999 0.001 Ω
0 to 400 mΩ, 9999 0.01 mΩ
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
Tab. 5-187: Parameter setting ranges
NOTES 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.