
(C) Motor constant parameters
432
Changing the motor constants
• If the motor constants are known, the motor constants can be set directly or set using data measured through offline auto
tuning.
• According to the
Pr.71 (Pr.450)
setting, the range of the motor constant parameter setting values and units can be
changed. The setting values are stored in the EEPROM as motor constant parameters, and three types of motor constants
can be stored.
Changing the motor constants (If setting the Pr.92 and Pr.93 motor
constants in units of mH)
• Set
Pr.71
as shown below.
• Use the following formula to find the
Pr.94
setting value and set a given value as the motor constant parameter.
For the FR-A860-01080 or lower.
For the FR-A860-01440 or higher.
NOTE
• “If "9999" is set, tuning data will be invalid and the motor constant values for standard motors / vector control dedicated
motors are used.
Motor
Pr.71 setting
Standard motor
0 (initial value)
Constant-torque motor
1
Vector control dedicated motor
30
The setting value of Pr.94 = (1 -
M
2
)
100(%)
L1
L2
Equivalent circuit diagram of the motor
First
motor Pr.
Second
motor Pr.
Name
Setting range
Setting
increments
Initial
value
82
455
Motor excitation current
(No-load current)
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
0 to 400 m
Ω
0.01 m
91
459
Motor constant (R2)
0 to 50
Ω
, 9999
0.001
0 to 400 m
Ω
0.01 m
92
460
Motor constant (L1)/d-axis
inductance (Ld)
0 to 6000 mH, 9999
0 to 400 mH, 9999
0.01 mH
93
461
Motor constant (L2)/q-axis
inductance (Lq)
0 to 6000 mH, 9999
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
L1= I1+ M: Primary inductance
L2= I2+ M: Secondary inductance
M
V
R2/S
R1
I1
I2
R1: Primary resistance
I1: Primary leakage inductance
I2: Secondary leakage inductance
M: Excitation inductance
S: Slip
R2: Secondary resistance
Содержание 800 Series
Страница 11: ...MEMO 10 ...
Страница 17: ...MEMO 16 ...
Страница 95: ...MEMO 94 ...
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Страница 681: ...MEMO 680 ...