Mitsubishi Electric FR-E720-0.1KNC Instruction Manual page 155

Selection and protection of a motor
(5) Method to set the motor constants without using the offline auto tuning data
The Pr. 90 to Pr. 94 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. 90 to Pr. 94 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
Iq = I - I
100
Parameter
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
3)Refer to the following table and set Pr. 83 and Pr. 84.
Parameter
Number
83 Rated motor voltage
84 Rated motor frequency
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) constants are used.
NOTE
If "star connection" is mistaken for "delta connection" or vice versa during setting of Pr. 71, Advanced magnetic flux
vector control and General-purpose magnetic flux vector control cannot be exercised properly.
152
Star Connection Motor Delta Connection Motor
5
15
=rated current, I =no load current
100 0
2
0
Name Setting Range
0 to 500A, 9999
0 to 50Ω, 9999
0 to 50Ω, 9999
0 to 50Ω, 9999
0 to 50Ω, 9999
0 to 500Ω, 9999
Torque current 0 to 500A, 9999
Name Setting Range
6
16
Setting
Increments
0.01A
0.001Ω
0.001Ω
0.001Ω
0.001Ω
0.01Ω
0.01A
Setting
Increments
0 to 1000V 0.1V
10 to 120Hz 0.01Hz
Initial Value
9999
9999
9999
9999
9999
9999
9999
Initial Value
200V class 200V
400V class 400V
60Hz