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Online Auto Tuning - Mitsubishi Electric FR-F820-00046 Instruction Manual

Fr-f800 series.
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• Set desired values as the motor constant parameters. The displayed increments of the read motor constants can be
changed with Pr.684 Tuning data unit switchover. Setting Pr.684 = "1" disables parameter setting changes.
First motor
Second
Pr.
motor Pr.
90
458
92
460
93
461
706
738
859
860
1412
1413
*1
For the FR-F820-02330(55K) or lower, and FR-F840-01160(55K) or lower.
*2
For the FR-F820-03160(75K) or higher, and FR-F840-01800(75K) or higher.
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, tuning data will be invalid. The MM-EFS or MM-THE4 constant is used for the IPM motor MM-EFS or MM-
THE4, and the inverter internal constant is used for a PM motor other than MM-EFS or MM-THE4.
• To change a motor induced voltage constant of PM motors, the setting in Pr.706 Induced voltage constant (phi f) or Pr.738
Second motor induced voltage constant (phi f) must be changed. If the constant after the change exceeds the setting range
of Pr.706 or Pr.738 (0 to 5000 mV (rad/s)), set Pr.1412 Motor induced voltage constant (phi f) exponent or Pr.1413 Second
motor induced voltage constant (phi f) exponent. Set a value in the exponent n in the formula, Pr.706 (Pr.738) × 10
(rad/s)], to set the induced voltage constant (phi f).
• When Pr.71 (Pr.450) = "8093, 8094, 9093, or 9094", or Pr.1412 (Pr.1413) = "9999", the motor induced voltage constant is as
set in Pr.706 (Pr.738). (No exponent setting)
Parameters referred to
Pr.9 Electronic thermal O/L
Pr.71 Applied
motorpage 362
Pr.178 to Pr.189 (Input terminal function

5.10.4 Online auto tuning

Magnetic flux
Magnetic flux
Magnetic flux
If online auto tuning is selected under Advanced magnetic flux vector control, favorable torque accuracy is retained by adjusting
temperature even when the resistance value varies due to increase in the motor temperature.
Pr.
95
Online auto tuning selection
C111
574
Second motor online auto tuning
C211
 Online auto tuning at startup (Pr.95/Pr.574 = "1")
• By promptly tuning the motor status at startup, accurate operation without being affected by motor temperature is achieved.
Also high torque can be provided at very low speed and stable operation is possible.
• Under Advanced magnetic flux vector control (Pr.80 Motor capacity, Pr.81 Number of motor poles), select the online
auto tuning at startup.
382
5. PARAMETERS
5.10 (C) Motor constant parameters
Name
Setting range
Motor constant (R1)
Motor constant (L1)/d-
axis inductance (Ld)
Motor constant (L2)/q-
axis inductance (Lq)
0 to ***, 9999
Induced voltage
constant (phi f)
Torque current/Rated
PM motor current
Motor induced voltage
constant (phi f)
exponent
relaypage 252
selection)page 355
Name
Initial value
0
0
Pr.684 = 0 (initial value)
Setting
increments
1
Setting range
0
1
0, 1
Pr.684 = 1
Setting
Setting range
increments
*1
0 to 50 Ω, 9999
0.001 Ω
*2
0 to 400 mΩ, 9999
0.01 mΩ
*1
0 to 500 mH, 9999
0.01 mH
*2
0 to 50 mH, 9999
0.001 mH
*1
0 to 500 mH, 9999
0.01 mH
*2
0 to 50 mH, 9999
0.001 mH
0 to 5000 mV (rad/s),
0.1 mV (rad/s)
9999
*1
0 to 500 A, 9999
0.01 A
*2
*2
0 to 3600 A, 9999
0.1 A
0 to 2, 9999
1
Description
No online auto tuning
Online auto tuning is performed at startup.
Select online auto tuning for the second motor.
(The settings are the same as those in Pr.95.)
Initial
value
*1
*2
*1
*2
*1
*2
9999
*1
n
[mV

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