Mitsubishi Electric FR-F800 Series Instruction Manual page 390

• Use the following formula to find the Pr.94 setting value and set a desired value as the motor constant parameter.
The setting value of Pr.94 = （1 -
R1
V
First motor
Pr.
82
90
91
92
93
94
859
298
*1 For the FR-F820-02330(55K) or lower, and FR-F840-01160(55K) or lower.
*2 For the FR-F820-03160(75K) or higher, and FR-F840-01800(75K) or higher.
NOTE
• If "9999" is set, tuning data will be invalid and the constant values for Mitsubishi Electric motors (SF-PR, SF-JR, SF-HR, SF-
JRCA, SF-HRCA and so on) are used.
 Changing the motor constants (when setting motor constants in the
internal data of the inverter)
• Set Pr.71 as follows.
Mitsubishi Electric standard motor
Mitsubishi Electric high-efficiency motor
Mitsubishi Electric constant-torque motor
Mitsubishi Electric high-performance energy-
saving motor
Other manufacturer's standard motor
Other manufacturer's constant-torque motor
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L1×L2
I1 I2
R1: Primary resistance
R2: Secondary resistance
I1: Primary leakage inductance
I2: Secondary leakage inductance
R2/S
M: Excitation inductance
M
S: Slip
L1= I1+ M: Primary inductance
L2= I2+ M: Secondary inductance
Equivalent circuit diagram of the motor
Second
Name
motor Pr.
Motor excitation current (no load
455
current)
458 Motor constant (R1)
459 Motor constant (R2)
Motor constant (L1)/d-axis
460
inductance (Ld)
Motor constant (L2)/q-axis
461
inductance (Lq)
462 Motor constant (X)
Torque current/Rated PM motor
860
current
560 Frequency search gain
Motor
SF-JR, SF-TH
SF-JR 4P 1.5 kW or lower
SF-HR
Others
SF-JRCA 4P, SF-TH (constant-torque)
SF-HRCA
Others (SF-JRC, etc.)
SF-PR
—
—
search engine
2
M
）×100(％)
Setting range
0 to 500 A, 9999
0 to 3600 A, 9999
0 to 50 Ω, 9999
0 to 400 mΩ, 9999
0 to 50 Ω, 9999
0 to 400 mΩ, 9999
0 to 6000 mH, 9999
0 to 400 mH, 9999
0 to 6000 mH, 9999
0 to 400 mH, 9999
0% to 100%, 9999
0 to 500 A, 9999
0 to 3600 A, 9999
0 to 32767, 9999
Setting
increments
*1 *1
0.01 A
*2 *2
0.1 A
*1 *1
0.001 Ω
*2 *2
0.01 mΩ
*1 *1
0.001 Ω
*2 *2
0.01 mΩ
*1 *1
0.1 mH
*2 *2
0.01 mH
*1 *1
0.1 mH
*2 *2
0.01 mH
*1
0.1%
*2
0.01%
*1 *1
0.01 A
*2 *2
0.1 A
1
Pr.71 setting
3 (4)
23 (24)
43 (44)
3 (4)
13 (14)
53 (54)
13 (14)
73 (74)
3 (4)
13 (14)
5.10 (C) Motor constant parameters
1
2
3
4
Initial value
5
6
7
9999
8
9
10
389
5. PARAMETERS