Mitsubishi Electric FR-A700 Technical Manual page 224

2.7.4 Advanced magnetic flux vector control
[Pr. 71, 80, 81, 89, 450, 451*, 453*, 454*, 569*, 800]
Advanced magnetic flux vector control is a control method
which allows low-speed torque to be improved by dividing the
motor current into an excitation current and a torque current
and making voltage compensation to flow a motor current
which meets the load torque.
The magnitude of a load torque (i.e. motor slip) is estimated
from the magnitude of the torque current on the basis of more
accurate motor constants, thereby controlling the output
frequency (slip compensation) to make the actual motor speed
nearer to the speed command value.
Advanced magnetic flux vector control can be selected by
setting the capacity, poles and type of the motor.
[Pr. ] Name
71 Applied motor
80 Motor capacity
Number of motor
81
poles
Speed control
89 gain (magnetic
flux vector)
Second applied
450
motor
Second motor
451 control method
selection
Second motor
453
capacity
Number of second
454
motor poles
Second motor
569
speed control gain
Control method
800
selection
* Use [Pr. 178 to Pr. 189] to assign the terminals used for the X18 and MC signal.
** When [Pr. 80 Motor capacity = 9999] or [Pr. 81 Number of motor poles = 9999], control method is V/F control regardless of the [Pr. 800] setting.
Initial
Setting Range
Value
A700
0 to 8, 13 to 18, 20, 23, 24, 30,
33, 34, 40, 43, 44, 50, 53, 54
0
E700
0, 1, 3 to 6, 13 to 16, 23, 24,
40, 43, 44, 50, 53, 54
A700
55K or less: 0.4 to 55kW
75K or less: 0 to 3600kW
9999
E700
0.1 to 15kW
9999
2, 4, 6, 8, 10
9999 12, 14, 16, 18, 20
9999
0 to 200%
9999
9999
A700
0 to 8, 13 to 18, 20, 23, 24, 30,
33, 34, 40, 43, 44, 50, 53, 54
9999
E700
0, 1
9999
10, 11, 12
9999
20, 9999
55K or less 0.4 to 55kW
9999 75K or more 0 to 3600kW
9999
2, 4, 6, 8, 10
9999
9999
0 to 200%
9999
9999
0 to 5
9
10, 11, 12
20
20
30
(A700)(E700)
(*[Pr. 451 453, 454, 569] are not available for
,
Excitation
current
Vector division of motor current
Description
By selecting a standard motor or constant torque
motor, thermal characteristic and motor constants of
each motor are set.
Set the applied motor capacity.
V/F control
Set the number of motor poles.
X18 signal-ON:
Set 10 + number of motor poles.
V/F control *
V/F control
Motor speed fluctuation due to load fluctuation is
adjusted during Advanced magnetic flux vector control.
100% is a referenced value.
Gain matching with the motor set in [Pr. 71].
Set when using the second motor.
(Same specifications as [Pr. 71] )
Function invalid ([Pr. 71] is valid.)
Real sensorless vector control
V/F control (Advanced magnetic flux vector control)
Set the capacity of the second motor.
V/F control
Set the number of poles of the second motor.
V/F control
Second motor speed fluctuation due to load
fluctuation is adjusted during Advanced magnetic flux
vector control. 100% is a referenced value.
Gain matching with the motor set in [Pr. 451]
Vector control
Vector control test operation
Real sensorless vector control
V/F control **
Advanced magnetic flux vector control
General-purpose magnetic flux vector
control
258
PARAMETER
A700 E700
Motor current
Torque current
.)
E700
Available
Inverters
A700 D700
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