Mitsubishi Electric FR-E710W-0.1K, Instruction Manual

Page: 86 / 349

86
Adjustment of the output torque (current) of the motor
4.4.2 Advanced magnetic flux vector control (Pr. 71, Pr. 80, Pr. 81, Pr.89, Pr. 800)
Advanced magnetic flux vector control can be selected by setting the capacity, poles and type of the motor used in Pr.
80 and Pr. 81 .
Advanced magnetic flux vector control?
The low speed torque can be improved by providing voltage compensation to flow a motor current which meets the
load torque. Output frequency compensation (slip compensation) is made so that the motor actual speed
approximates a speed command value. Effective when load fluctuates drastically, etc.
When the FR-E500 series used for General-purpose magnetic flux vector control was replaced, select General-
purpose magnetic flux vector control only when the same operation characteristic is necessary.
(Refer to page 89)
Parameter
Number
Name
Initial
Value
Setting Range Description
71 Applied motor
0
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
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.
9999 V/F control
89
Speed control gain
(Advanced
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
.
800
Control method
selection
20
20 Advanced magnetic flux vector control
∗
30
General-purpose magnetic flux vector control
∗
(Refer to
page 89)
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 188)
∗
Set a value other than "9999" in Pr. 80 and Pr. 81 .
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 0.1kW or more.)
Motor to be used is any of Mitsubishi standard motor, high efficiency motor (SF-JR, SF-HR 0.2kW or more) or
Mitsubishi constant-torque motor (SF-JRCA four-pole, SF-HRCA 0.2kW to 15kW). When using a motor other
than the above (other manufacturer's motor), 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.)
Permissible wiring length between inverter and motor differs according to the inverter capacity and setting value
of
Pr. 72 PWM frequency selection (carrier frequency). Refer to page 21 for the permissible wiring length.
AD MFVC AD MFVC AD MFVC