Mitsubishi Electric 800 Series Instruction Manual page 317

• Set desired values as the motor constant parameters.
First Second
motor Pr. motor Pr.
82 455
90 458
91 459
92 460
93 461
94 462
859 860
298 560
717 741
720 737
NOTE
• As the motor constants measured in the offline auto tuning have been converted into internal data (****), refer to the following
setting example when making setting. (The value displayed has been converted into a value for internal use. Therefore, simple
addition of a value to the displayed value does not bring the desired effect.)
Setting example: To slightly increase the Pr.90 value (5%)
When "2516" is displayed for Pr.90, set 2642 (2516 × 1.05 = 2641.8) in Pr.90.
• 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 the Pr.92, Pr.93, and Pr.94
motor constants in units of Ω)
• Set Pr.71 as follows.
Applied motor
Standard motor
Constant-torque motor
• Set desired values as the motor constant parameters.
Iq = torque current, I
100 =
2 2
Iq = I - I
100 0
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 "wye connection" or "delta connection" is incorrectly selected in Pr.71, Advanced magnetic flux vector control and Real
sensorless vector control are not performed properly.
• 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.
316
13.(C) Motor Constant Parameters
13.2 Offline auto tuning
Name
Motor excitation 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
Wye connection motor
5
15
rated current, I no load current
0 =
Name
Motor excitation current (no load current) 0 to 500 A, 9999
Motor constant (r1)
Motor constant (r2)
Motor constant (x1)
Motor constant (x2)
Motor constant (xm)
Torque current/Rated PM motor current
Frequency search gain
Starting resistance tuning compensation
coefficient 1
Starting resistance tuning compensation
coefficient 2
Setting range
0 to ***, 9999
0 to 32767, 9999
0% to 200%
0% to 200%
Pr.71 setting
Delta connection motor
6
16
Setting range
0 to 50 Ω, 9999
0 to 50 Ω, 9999
0 to 50 Ω, 9999
0 to 50 Ω, 9999
0 to 500 Ω, 9999
0 to 500 A, 9999
0 to 32767, 9999
0% to 200%
0% to 200%
Setting
increments
1
9999
1
0.1%
0.1%
Setting increments Initial value
0.01 A
0.001 Ω
0.001 Ω
0.001 Ω
0.001 Ω
0.01 Ω
9999
0.01 A
1
0.1%
0.1%
Initial
value