Mitsubishi Electric FR-A700 Series, Technical Manual

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258
PARAMETER
2.7.4 Advanced magnetic flux vector control
[Pr. 71, 80, 81, 89, 450, 451*, 453*, 454*, 569*, 800]
(A700)(E700)
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. 451
,
453, 454, 569
] are not available for .)
A700 E700
E700
Motor current
Torque current
Excitation
current
Vector division of motor current
[ Pr. ] Name
Initial
Value
Setting Range Description
Available
Inverters
71 Applied motor 0
0 to 8, 13 to 18, 20, 23, 24, 30,
33, 34, 40, 43, 44, 50, 53, 54
0, 1, 3 to 6, 13 to 16, 23, 24,
40, 43, 44, 50, 53, 54
By selecting a standard motor or constant torque
motor, thermal characteristic and motor constants of
each motor are set.
{ {
80 Motor capacity 9999
55K or less: 0.4 to 55kW
75K or less: 0 to 3600kW
0.1 to 15kW
Set the applied motor capacity.
{ {
9999 V/F control
81
Number of motor
poles
9999
2, 4, 6, 8, 10 Set the number of motor poles. { {
12, 14, 16, 18, 20
X18 signal-ON:
V/F control
*
Set 10 + number of motor poles. { —
9999 V/F control { {
89
Speed control
gain (magnetic
flux vector)
9999
0 to 200%
Motor speed fluctuation due to load fluctuation is
adjusted during Advanced magnetic flux vector control.
100% is a referenced value.
{ {
9999 Gain matching with the motor set in [ Pr. 71 ].
450
Second applied
motor
9999
0 to 8, 13 to 18, 20, 23, 24, 30,
33, 34, 40, 43, 44, 50, 53, 54
0, 1
Set when using the second motor.
(Same specifications as [
Pr. 71
] )
{ {
9999 Function invalid ([
Pr. 71
] is valid.)
451
Second motor
control method
selection
9999
10, 11, 12 Real sensorless vector control
{ —
20, 9999 V/F control (Advanced magnetic flux vector control)
453
Second motor
capacity
9999
55K or less 0.4 to 55kW
Set the capacity of the second motor.
{ — 75K or more 0 to 3600kW
9999 V/F control
454
Number of second
motor poles
9999
2, 4, 6, 8, 10 Set the number of poles of the second motor.
{ —
9999 V/F control
569
Second motor
speed control gain
9999
0 to 200%
Second motor speed fluctuation due to load
fluctuation is adjusted during Advanced magnetic flux
vector control. 100% is a referenced value.
{ —
9999 Gain matching with the motor set in [ Pr. 451 ]
800
Control method
selection
20
0 to 5
V/F control **
Vector control
{
— 9 Vector control test operation
10, 11, 12 Real sensorless vector control
20 Advanced magnetic flux vector control
{
30
General-purpose magnetic flux vector
control
—
* 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.
A700 D700
A700
E700
A700
E700
A700
E700