Mitsubishi Electric FR-A800 Series Instruction Manual page 545

Pr. Name
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
738 Second motor induced
C230 voltage constant (phi f)
Second motor induced
1413
voltage constant (phi f)
C235
exponent
739 Second motor Ld
C231 decay ratio
740 Second motor Lq
C232 decay ratio
Second motor
746
protection current
C233
level
373
Encoder position
*6
tuning setting/status
C142
Control terminal
871
option—Encoder
*7
position tuning setting/
C243
status
1105
Encoder magnetic pole
*6
position offset
C143
Control terminal
887
option—Encoder
*7
magnetic pole position
C143
offset
*1 For the FR-A820-00077(0.75K) or lower and FR-A840-00038(0.75K) or lower, it is set to 85% of the inverter rated current.
*2 For the FR-A820-03160(55K) or lower, and FR-A840-01800(55K) or lower.
*3 For the FR-A820-03800(75K) or higher, and FR-A840-02160(75K) or higher.
*4 The initial value differs according to the voltage class (200 V / 400 V).
*5 The setting range and unit change according to the Pr.71 (Pr.450) setting.
*6 The setting is available when the FR-A8AL/FR-A8APR/FR-A8APS/FR-A8APA is installed.
*7 The setting is available when the FR-A8TP is installed.
• 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 Vector control is selected.
• Check that a motor is connected. (Check that the motor is not rotated by an external force during tuning.)
• The rated motor current should be equal to or less than the inverter rated current. (The motor capacity must be 0.4 kW or
higher.)
If a motor with substantially low rated current compared with the inverter rated current, however, is used, speed and torque
accuracies may deteriorate due to torque ripples, etc. Set the rated motor current to about 40% or higher of the inverter
rated current.
• The maximum frequency is 400 Hz.
544
5. PARAMETERS
5.13 (C) Motor constant parameters
Downloaded from ManualsNet.com
Initial
Setting range
value
0 to 50 Ω, 9999
9999
0 to 400 mΩ, 9999
0 to 500 mH, 9999
9999
0 to 50 mH, 9999
0 to 500 mH, 9999
9999
0 to 50 mH, 9999
0 to 500 A, 9999
9999
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
100 to 500%
9999
9999
0
0
1
0
0
1
0 to 16383
65535
65535
0 to 16383
65535
65535
search engine
*2*5
*3*5
*2*5
Tuning data of the second motor.
*3*5
(The value measured by offline auto tuning is automatically
*2*5 set.)
9999: Inverter internal data is used.
*3*5
*2*5
*3*5
*5
Set this parameter according to the PM motor specifications.
The value calculated from the parameter setting for motor
constant is used.
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: Inverter internal data is used.
Set the maximum current (OCT) level of the second motor.
200%
Encoder position tuning disabled.
Encoder position tuning enabled.
Encoder position tuning disabled.
Encoder position tuning enabled.
Encoder position tuning data set.
Encoder position tuning not performed.
Encoder position tuning data set.
Encoder position tuning not performed.
Description
n
.