Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 519

• 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 SF-V5RU (1500 r/min series) and so on) are used.
 Changing the motor constants (when setting the Pr.92 and Pr.93 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 =
Iq = I 2 - I 2
100 0
First motor Second
Pr. motor Pr.
82 455
90 458
91 459
92 460
93 461
94 462
859 860
298 560
*1 For the FR-A820-03160(55K) or lower, and FR-A840-01800(55K) or lower.
*2 For the FR-A820-03800(75K) or higher, and FR-A840-02160(75K) or higher.
NOTE
• If "wye connection" or "delta connection" is incorrectly selected in Pr.71, Advanced magnetic flux vector control, Real
sensorless vector control, and Vector control are not performed properly.
• 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 SF-V5RU (1500 r/min series) and so on) are used.
 Tuning the second motor
• When one inverter switches the operation between two different motors, set the second motor in Pr.450 Second applied
motor. (Refer to
518
5. PARAMETERS
5.13 (C) Motor constant parameters
5
15
rated current, I no load current
0 =
Name
Motor excitation current
(no load current)
Motor constant (r1)
Motor constant (r2)
Motor constant (x1)
Motor constant (x2)
Motor constant (xm)
Torque current/Rated PM motor
current
Frequency search gain
page 505.) In the initial setting, no second motor is applied.
Pr.71 setting
Wye connection motor
Setting range
*1
0 to 500 A, 9999
*2
0 to 3600 A, 9999
*1
0 to 50 Ω, 9999
*2
0 to 400 mΩ, 9999
*1
0 to 50 Ω, 9999
*2
0 to 400 mΩ, 9999
*1
0 to 50 Ω, 9999
*2
0 to 3600 mΩ, 9999
*1
0 to 50 Ω, 9999
*2
0 to 3600 mΩ, 9999
*1
0 to 500 Ω, 9999
*2
0 to 100 Ω, 9999
*1
0 to 500 A, 9999
*2
0 to 3600 A, 9999
0 to 32767, 9999
Delta connection motor
6
16
Setting increments
*1
0.01 A
*2
0.1 A
*1
0.001 Ω
*2
0.01 mΩ
*1
0.001 Ω
*2
0.01 mΩ
*1
0.001 Ω
9999
*2
0.1 mΩ
*1
0.001 Ω
*2
0.1 mΩ
0.01 Ω
*1
0.01 A
*2
0.1 A
1
Initial value