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Pr.
Name
744
Second motor inertia
C207
(integer)
745
Second motor inertia
C208
(exponent)
463
Second motor auto
C210
tuning setting/status
458
Second motor
C220
constant (R1)
Second motor
460
constant (L1) / d-axis
C222
inductance (Ld)
Second motor
461
constant (L2) / q-axis
C223
inductance (Lq)
Second motor torque
860
current/Rated PM
C226
motor current
Second motor
738
induced voltage
C230
constant (phi f)
Second motor
1413
induced voltage
C235
constant (phi f)
exponent
739
Second motor Ld
C231
decay ratio
740
Second motor Lq
C232
decay ratio
Second starting
741
resistance tuning
C282
compensation
Second motor
742
magnetic pole
C285
detection pulse width
Second motor
746
protection current
C233
level
*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.
*3
The initial value differs according to the voltage class (200 V / 400 V).
*4
The setting range and unit change according to the Pr.71 (Pr.450) setting.
• The settings are valid under PM motor control.
• The offline auto tuning enables the operation with SPM motors and IPM motors other than the MM-EFS or MM-THE4. (When
a PM motor other than the IPM motor MM-EFS or MM-THE4 is used, always perform offline auto tuning.)
• Tuning is enabled even when a load is connected to the motor.
• Reading/writing of the motor constants tuned by offline auto tuning are enabled. The offline auto tuning data (motor constants)
can be copied to another inverter using the operation panel.
• The offline auto tuning status can be monitored on the operation panel or the parameter unit.
 Before performing offline auto tuning
Check the following points before performing offline auto tuning:
• The PM motor control is selected.
• A motor is connected. (Check that the motor is not rotated by an external force during tuning.)
Initial
Setting range
value
9999
10 to 999, 9999
9999
0 to 7, 9999
0, 101
1
0
11
*1*4
0 to 50 Ω, 9999
9999
0 to 400 mΩ, 9999
0 to 500 mH, 9999
9999
*2*4
0 to 50 mH, 9999
0 to 500 mH, 9999
9999
*2*4
0 to 50 mH, 9999
*1*4
0 to 500 A, 9999
9999
*2*4
0 to 3600 A, 9999
0 to 5000 mV (rad/s)
9999
9999
0 to 2
9999
9999
9999
0 to 100%, 9999
9999
0 to 100%, 9999
9999
0 to 200%, 9999
0 to 6000 μs, 10000 to
9999
16000 μs, 9999
100 to 500%
9999
9999
Set the inertia of the second motor.
9999: The MM-EFS/MM-THE4 inertia is used for the IPM motor
MM-EFS/MM-THE4.
No auto tuning for the second motor.
Offline auto tuning is performed without the motor rotating
(motor other than IPM motor MM-EFS or MM-THE4).
Offline auto tuning is performed without the motor rotating (V/F
control, IPM motor MM-EFS/MM-THE4).
*2*4
Tuning data of the second motor
*1*4
(The value measured by offline auto tuning is automatically
set.)
9999: The MM-EFS/MM-THE4 constant is used when the IPM
*1*4
motor MM-EFS/MM-THE4 is selected, and the inverter internal
data is used when a PM motor other than the MM-EFS or MM-
THE4 is selected.
*4
Set this parameter according to the PM motor specifications.
Value calculated based on the tuning data.
Set the exponent n when the induced voltage constant phi f
(Pr.738) is multiplied by 10
No exponent setting
Tuning data of the second motor
(The value measured by offline auto tuning is automatically
set.)
9999: The MM-EFS/MM-THE4 constant is used when the IPM
motor MM-EFS/MM-THE4 is selected, and the inverter internal
data is used when a PM motor other than the MM-EFS or MM-
THE4 is selected.
Set the maximum current (OCT) level of the second motor.
The MM-EFS/MM-THE4 constant is used when the IPM motor
MM-EFS or MM-THE4 is selected, and 200% is used when a
PM motor other than the MM-EFS or MM-THE4 is selected.
Description
n
.
5. PARAMETERS
5.10 (C) Motor constant parameters
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