Mitsubishi Electric FR-A720-0.4K Instruction Manual page 199

(5) Method to set the motor constants without using the offline auto tuning data
The Pr. 92 and Pr. 93 motor constants may either be entered in [Ω] or in [mH]. Before starting operation, confirm which
motor constant unit is used.
• To enter the Pr. 92 and Pr. 93 motor constants in [Ω]
<Operating procedure>
1) Set Pr. 71 according to the motor used.
Standard motor
Setting
Constant-torque motor
2) In the parameter setting mode, read the following parameters and set desired values.
Iq = torque current, I
2 2
Iq = I - I
100 0
Parameters
Number
Motor excitation current
82
(no load current)
90 Motor constant (r1)
91 Motor constant (r2)
92 Motor constant (x1)
93 Motor constant (x2)
94 Motor constant (xm)
859 Torque current
3)Refer to the following table and set Pr. 83 and Pr. 84 .
Parameter
Number
83 Motor rated voltage
84 Rated motor frequency
* The initial value differs according to the voltage level. (200V/400V)
REMARKS
· When "9999" is set in Pr. 82, Pr. 90 to Pr. 94, Pr. 859, Mitsubishi motor (SF-JR, SF-HR,SF-JRCA, SF-HRCA, SF-V5RU) constants
are used.
CAUTION
· If "star connection" is mistaken for "delta connection" or vice versa during setting of Pr. 71, advanced magnetic flux vector
control, real sensorless vector control and vector control cannot be exercised properly.
Star Connection
Motor
5
15
rated current, I no load current
100 = 0 =
Name
55K or less
75K or more
55K or less
75K or more
55K or less
75K or more
55K or less
75K or more
55K or less
75K or more
55K or less
75K or more
55K or less
75K or more
Name Setting Range
0 to 1000V
10 to 120Hz
Selection and protection of a motor
Delta Connection
Motor
6
16
Setting Range
0 to 500A, 9999
0 to 3600A, 9999
0 to 50Ω, 9999
0 to 400mΩ, 9999
0 to 50Ω, 9999
0 to 400mΩ, 9999
0 to 50Ω, 9999
0 to 3600mΩ, 9999
0 to 50Ω, 9999
0 to 3600mΩ, 9999
0 to 500Ω, 9999
0 to 100Ω, 9999
0 to 500A, 9999
0 to 3600A, 9999
Setting
Increments
0.1V
0.01Hz
Setting Initial
Increments Value
0.01A
9999
0.1A
0.001Ω
9999
0.01mΩ
0.001Ω
9999
0.01mΩ
0.001Ω
9999
0.01mΩ
0.001Ω
9999
0.01mΩ
0.01Ω 9999
0.01A
9999
0.1A
Initial
Value
200V/400V
60Hz
189
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