Mitsubishi Electric FR-A700 Instruction Manual page 412

Selection and protection of a motor
Method to set the motor constants without using the offline auto tuning data
The Pr. 90 and Pr. 94 motor constants may either be entered in [ Ω, mΩ ] or in [mH]. Before start-
ing operation, confirm which motor constant unit is used.
To enter the Pr. 90 to Pr. 94 motor constants in [Ω]/[mΩ]
Set Pr. 71 according to the motor used:
Standard motor
Constant-torque motor
Tab. 6-55: Setting of parameter 71
In the parameter setting mode, read the following parameters and set desired values.
I = torque current, I
q
I =
q
Pr.
82
90
91
92
93
94
859
Tab. 6-56: Setting of parameter 82, 90 to 94 and 859
Refer to the following table and set Pr. 83 and Pr. 84.
Pr.
83
84
Tab. 6-57: Setting of parameter 83 and 84
NOTES
When "9999" is set in Pr. 90 to Pr. 94, Mitsubishi motor (SF-JR, SF-HR, SF-JRCA, SF-
HRCA) constants are used.
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 can-
not be exercised properly
6 - 232
= rated current, I
100
2 2
I – I
100 0
Name
01800 or less
Motor excitation cur-
rent (no load current)
02160 or more
01800 or less
Motor constant R1
02160 or more
01800 or less
Motor constant R2
02160 or more
01800 or less
Motor constant L1
02160 or more
01800 or less
Motor constant L2
02160 or more
01800 or less
Motor constant X
02160 or more
01800 or less
Torque current
02160 or more
Name
Motor rated voltage
Rated motor frequency
Star Connection Motor
5
15
= no load current
0
Setting Range
0–500A, 9999
0–3600A, 9999
0–50Ω, 9999
0–400mΩ, 9999
0–50Ω, 9999
0–400mΩ, 9999
0–50Ω, 9999
0–3600mΩ, 9999
0–50Ω, 9999
0–3600mΩ, 9999
0–500Ω, 9999
0–100Ω, 9999
0–500A, 9999
0–3600A, 9999
Setting Range Setting Inrements
0–1000V
10–120Hz
Parameter
Delta Connection Motor
6
16
Setting Inre-
Initial Value
ments
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
0.1V 400V
0.01Hz 50Hz