Advanced Magnetic Flux Vector Control (Pr. 71, Pr. 80, - Mitsubishi Electric FR-A700 Instruction Manual

Adjust the output torque of the motor (current)
6.7.2 Advanced magnetic flux vector control (Pr. 71, Pr. 80, Pr. 81, Pr. 89, Pr. 450,
Pr. 451, Pr. 453, Pr. 454, Pr. 569, Pr. 800)
Advanced magnetic flux vector control can be selected by setting the capacity, number and type
of motor to be used in Pr. 80 and Pr. 81.
● What is advanced magnetic flux vector control?
The low speed torque can be improved by providing voltage compensation so that the motor
current which meets the load torque to flow. Output frequency compensation (slip compen-
sation) is made so that the motor actual speed approximates a speed command value.
Effective when load fluctuates drastically, etc.
Pr.
Name
No.
71
Applied motor
80
Motor capacity 9999
Number of motor
81
9999
poles
Speed control
89
gain (magnetic 9999
flux vector)
Second applied
450
9999
motor
Second motor
451
control method 9999
selection
Second motor
453
9999
capacity
Number of sec-
454
9999
ond motor poles
Second motor
569
speed control 9999
gain
Control method
800
selection
Use Pr. 178 to Pr. 189 to assign the terminals used for the X18 and MC signal.
6 - 150
Initial Setting
Description
Value Range
By selecting a standard motor or constant
0–8/13–18/20/23/
0 24/30/33/34/40/ torque motor, thermal characteristic and
43/44/50/53/54
motor constants of each motor are set.
01800
0.4–55kW
or less
Set the applied motor capacity.
02160
or 0–3600kW
more
9999 V/f control
2/4/6/8/10 Set the number of motor poles.
X18 signal-ON:
12/14/16/18/20
V/f control
9999 V/f control
Motor speed fluctuation due to load fluctua-
tion is adjusted during advanced magnetic
0–200%
flux vector control.
100% is a referenced value.
9999 Gain matching with the motor set in Pr. 71.
0–8/13–18/20/23/
Set when using the second motor.
24/30/33/34/40/
(same specifications as Pr. 71 )
43/44/50/53/54
9999 Function invalid (Pr. 71 is valid)
10/11/12 Real sensorless vector control
V/f control (advanced magnetic flux vector
20/9999
control)
01800
0.4–55kW
or less
Set the capacity of the second motor.
02160
or 0–3600kW
more
9999 V/f control
Set the number of poles of the second
2/4/6/8/10
motor.
9999 V/f control
Second motor speed fluctuation due to load
fluctuation is adjusted during advanced
0–200%
magnetic flux vector control.
100% is a referenced value.
9999 Gain matching with the motor set in Pr. 450.
0–5 Vector control
9 Vector control test operation
20
10/11/12 Real sensorless vector control
V/f control (advanced magnetic flux vector
20
control)
Magnetic flux Magnetic flux Magnetic flux
Parameters referred to
Set 10 + number of
motor poles.
Parameter
Refer to
Section
71 Applied motor 6.12.2
450 Second applied 6.12.2
motor
800 Control method 6.2.2
selection
451 Second motor 6.2.2
control method
selection