Mitsubishi Electric 800 Series Instruction Manual page 435

(C) Motor constant parameters
Changing the motor constants (If setting the Pr.92 and Pr.93 motor
constants in units of [Ω])
• Set Pr.71 as shown below.
Applicable motor
Standard motor
Constant-torque motor
• Set given values as the motor constant parameters.
Iq = torque current, I
100 =
Iq = I 2 - I 2
100 0
First Second
motor Pr. motor Pr.
82 455
90 458
91 459
92 460
93 461
94 462
859 860
298 560

For the FR-A860-01080 or lower.

For the FR-A860-01440 or higher.
NOTE
• If "star 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 normally.
• "If "9999" is set, tuning data will be invalid and the motor constant values for standard motors / vector control dedicated
motors are used.
434
PARAMETERS
Pr.71 setting
Star connection motor
5
15
rated current, I no load current
0 =
Name
0 to 500 A, 9999
Motor excitation current
(No-load current)
0 to 3600 A, 9999
0 to 50 Ω, 9999
Motor constant (r1)
0 to 400 mΩ, 9999
0 to 50 Ω, 9999
Motor constant (r2)
0 to 400 mΩ, 9999
0 to 50 Ω, 9999
Motor constant (1)
0 to 3600 mΩ, 9999
0 to 50 Ω, 9999
Motor constant (2)
0 to 3600 mΩ, 9999
0 to 500 Ω, 9999
Motor constant (m)
0 to 100 Ω, 9999
0 to 500 A, 9999
Torque current/Rated PM
motor current
0 to 3600 A, 9999
Frequency search gain 0 to 32767, 9999
Delta connection motor
6
16
Setting range














Setting Initial
increments value
0.01 A

0.1 A

0.001 Ω

0.01 mΩ

0.001 Ω

0.01 mΩ

0.001 Ω

0.01 mΩ 9999

0.001 Ω

0.01 mΩ

0.01 Ω
0.01 A

0.1 A

1