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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) - Mitsubishi Electric FR-A740-00023 Instruction Manual

Fr-a700 series.
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Adjust the output torque of the motor (current)
4.8.2
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 compensation) is made so that the motor
actual speed approximates a speed command value. Effective when load fluctuates drastically, etc.
Parameter
Name
Number
71
Applied motor
80
Motor capacity
81
Number of motor poles
Speed control gain
89
(magnetic flux vector)
450
Second applied motor
Second motor control
451
method selection
453
Second motor capacity
Number of second motor
454
poles
Second motor speed
569
control gain
800
Control method selection
* Use Pr. 178 to Pr. 189 to assign the terminals used for the X18 and MC signal. (Refer to page 222 )
POINT
If the following conditions are not satisfied, select V/F control since malfunction such as insufficient torque and
uneven rotation may occur.
• The motor capacity should be equal to or one rank lower than the inverter capacity. (note that the capacity should
be 0.4kW or more)
• Motor to be used is either Mitsubishi standard motor (SF-JR, SF-HR two-pole, four-pole, six-pole 0.4kW or more)
or Mitsubishi constant torque motor (SF-JRCA, SF-HRCA four-pole 0.4kW to 55kW). When using a motor other
than the above (SF-TH, other manufacturer's motors, etc.), perform offline auto tuning without fail.
• Single-motor operation (one motor run by one inverter) should be performed.
• The wiring length from inverter to motor should be within 30m. (Perform offline auto tuning in the state where
wiring work is performed when the wiring length exceeds 30m.)
• For 02160 or more, do not use an option sine wave filter (MT-BSL/BSC) between the inverter and motor.
140
Magnetic flux
Magnetic flux
Magnetic flux
Initial
Setting Range
Value
0 to 8, 13 to 18,
0
20, 23, 24, 30, 33, 34, 40,
43, 44, 50, 53, 54
01800 or less 0.4 to 55kW
02160 or
9999
0 to 3600kW
more
9999
2, 4, 6, 8, 10
9999
12, 14, 16, 18, 20
9999
0 to 200%
9999
9999
0 to 8, 13 to 18,
20, 23, 24, 30, 33, 34, 40,
9999
43, 44, 50, 53, 54
9999
10, 11, 12
9999
20, 9999
01800 or less 0.4 to 55kW
02160 or
9999
0 to 3600kW
more
9999
2, 4, 6, 8, 10
9999
9999
0 to 200%
9999
9999
0 to 5
9
20
10, 11, 12
20
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: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. 450.
Vector control
Vector control test operation
Real sensorless vector control
V/F control (advanced magnetic flux vector
control)
Set 10 + number
of motor poles.

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