Mitsubishi Electric 800 Series Instruction Manual page 316

• 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 I1 I2
R2/S
V
M
Equivalent circuit diagram of the motor
First motor Second
Pr. motor Pr.
82 455
90 458
91 459
92 460
93 461
94 462
859 860
298 560
717 741
720 737
NOTE
• If "9999" is set in the motor constant parameters, tuning data will be invalid and the constant values for Mitsubishi Electric
motors (SF-PR, SF-JR, SF-HR, SF-JRCA, SF-HRCA, GM-[], and GM-[]P) 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 efficiency motor
Mitsubishi Electric high-efficiency motor
Mitsubishi Electric constant-torque motor
Mitsubishi Electric high-performance energy-saving motor
Mitsubishi Electric geared motor
Other manufacturer's standard motor
Other manufacturer's constant-torque motor
2
M
）×100(％)
L1×L2
R1: Primary resistance
R2: Secondary resistance
I1: Primary leakage inductance
I2: Secondary leakage inductance
M: Excitation inductance
S: Slip
L1= I1+ M: Primary inductance
L2= I2+ M: Secondary inductance
Name
Motor excitation current (no load
current)
Motor constant (R1)
Motor constant (R2)
Motor constant (L1)/d-axis
inductance (Ld)
Motor constant (L2)/q-axis
inductance (Lq)
Motor constant (X)
Torque current/Rated PM motor
current
Frequency search gain
Starting resistance tuning
compensation coefficient 1
Starting resistance tuning
compensation coefficient 2
Motor
SF-JR
SF-JR 4P 1.5 kW or lower
SF-HR
Others
SF-JRCA 4P
SF-HRCA
Other (SF-JRC, etc.)
SF-PR
GM-[]/GM-[]P
—
—
Setting range
0 to 500 A, 9999
0 to 50 Ω, 9999
0 to 50 Ω, 9999
0 to 6000 mH, 9999
0 to 6000 mH, 9999
0% to 100%, 9999
0 to 500 A, 9999
0 to 32767, 9999
0% to 200%
0% to 200%
Pr.71 setting
3
23
43
3
13
53
13
73
1803
3
13
Setting
Initial value
increments
0.01 A
0.001 Ω
0.001 Ω
0.1 mH
0.1 mH
9999
0.1%
0.01 A
1
0.1%
0.1%
13.(C) Motor Constant Parameters
13.2 Offline auto tuning
11
12
13
14
15
16
17
18
19
20
315