Mitsubishi FR-A740-00023-EC, Instruction Manual

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188
Selection and protection of a motor
(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.
2) In the parameter setting mode, read the following parameters and set desired values.
3)Refer to the following table and set Pr. 83 and Pr. 84 .
Star Connection
Motor
Delta Connection
Motor
Setting
Standard motor 5 6
Constant-torque motor 15 16
Parameters
Number
Name Setting Range
Setting
Increments
Initial
Value
82
Motor excitation current
(no load current)
01800 or less 0 to 500A, 9999 0.01A
9999
02160 or more 0 to 3600A, 9999 0.1A
90 Motor constant (r1)
01800 or less 0 to 50
Ω
, 9999 0.001
Ω
9999
02160 or more 0 to 400m
Ω
, 9999 0.01m
Ω
91 Motor constant (r2)
01800 or less 0 to 50
Ω
, 9999 0.001
Ω
9999
02160 or more 0 to 400m
Ω
, 9999 0.01m
Ω
92 Motor constant (x1)
01800 or less 0 to 50
Ω
, 9999 0.001
Ω
9999
02160 or more 0 to 3600m
Ω
, 9999 0.01m
Ω
93 Motor constant (x2)
01800 or less 0 to 50
Ω
, 9999 0.001
Ω
9999
02160 or more 0 to 3600m
Ω
, 9999 0.01m
Ω
94 Motor constant (xm)
01800 or less 0 to 500
Ω
, 9999
0.01
Ω
9999
02160 or more 0 to 100
Ω
, 9999
859 Torque current
01800 or less 0 to 500A, 9999 0.01A
9999
02160 or more 0 to 3600A, 9999 0.1A
Parameter
Number
Name Setting Range
Setting
Increments
Initial
Value
83 Motor rated voltage 0 to 1000V 0.1V 400V
84 Rated motor frequency 10 to 120Hz 0.01Hz 50Hz
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.
Iq = I
100
2
- I
0
2
Iq = torque current, I
100 =
rated current, I
0 =
no load current