Mitsubishi Electric 800 Series Instruction Manual page 362

 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 5
Constant-torque motor 15
• 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 Motor excitation current
(No-load current)
90 458 Motor constant (r1)
91 459 Motor constant (r2)
92 460 Motor constant (1)
93 461 Motor constant (2)
94 462 Motor constant (m)
859 860 Torque current/Rated PM
motor current
298 560 Frequency search gain
*1 For the FR-F860-00680 or lower.
*2 For the FR-F860-01080 or higher.
NOTE
• If "star connection" or "delta connection" is incorrectly selected in Pr.71, Advanced magnetic flux vector control is not
performed normally.
• If "9999" is set, tuning data will be invalid and the motor constant values for standard motors are used.
Pr.71 setting
Star connection motor Delta connection motor
6
16
rated current, I no load current
0 =
Name
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 50 Ω, 9999
0 to 3600 mΩ, 9999
0 to 50 Ω, 9999
0 to 3600 mΩ, 9999
0 to 500 Ω, 9999
0 to 100 Ω, 9999
0 to 500 A, 9999
0 to 3600 A, 9999
0 to 32767, 9999
Setting range 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
*2
0.01 mΩ
*1
0.001 Ω
*2
0.01 mΩ
*1 0.01 Ω
*2
*1
0.01 A
*2
0.1 A
1
Initial value
9999
*1
*2
*1
*2
*1
*2
*1
*2
*1
*2
*1
*2
5. PARAMETERS
5.10 (C) Motor constant parameters
3
4
5
5
5
6
7
8
9
10
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