Simple Magnetic Flux Vector Control (Pr.80, Pr.90) - Mitsubishi Electric F700 Instruction Manual

4.3.2

Simple magnetic flux vector control (Pr.80, Pr.90)

Providing optimum excitation to the motor can also produce high torque in a low-speed range.
(Simple magnetic flux vector control)
Parameter
Name
Number
Motor capacity(simple
80
magnetic flux vector control)
90 Motor constant (R1)
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 156)
POINT
⋅ The number of motor poles should be any of 2, 4 and 6 poles.
⋅ Single-motor operation (One motor for one inverter)
⋅ The wiring length from inverter to motor should be within 30m
(1) Automatically control optimum torque (Pr.80)
⋅ When simple magnetic flux vector control is not used, set "9999" (initial value) in Pr.80.
⋅ Set the used motor capacity (equal to or one rank higher than the inverter capacity).
REMARKS
When using a constant-torque motor, set Pr. 71 Applied motor to "1" (constant-torque motor).
CAUTION
⋅ When simple magnetic flux vector control is selected, the rated motor frequency is set in Pr. 3 and the rated motor voltage is set in
Pr. 19. The base frequency voltage is handled as 200V class : 200V, 400V class : 400V when "9999" or "8888" is set in Pr. 19 .
⋅ Adjustable 5 points V/F, energy saving operation mode, optimum excitation control function only under V/F control. They do not
function for simple magnetic flux vector control.
(2) Set the motor constant (Pr.90)
⋅ Normally setting is not necessary. When you need more torque under simple magnetic flux vector control for other
manufacturer's motor, set the motor primary resistance value (R1) for
9999 (initial value), the motor constant is based on the Mitsubishi motor constant (SF-JR, SF-HRCA).
" "
♦ Parameters referred to ♦
Pr. 3 Base frequency, Pr. 19 Base frequency voltage
Pr. 60 Energy saving control selection
Pr. 71 Applied motor Refer to page 97
Pr. 77 Parameter write selection
Initial
Value
55K or less
9999
75K or more
55K or less
75K or more
9999
Refer to page 80
Refer to page 136
Refer to page 155
Adjust the output torque of the motor (current)
Setting Range
0.4 to
Set the capacity of the motor used to
55kW
select simple magnetic flux vector
0 to
control.
3600kW
9999 V/F control is performed
0 to 50Ω Used to set the motor primary
0 to resistance value.
400mΩ (Normally setting is not necessary.)
Use the Mitsubishi motor (SF-JR, SF-
9999
HRCA) constants
connection. When the setting value is
Description
71
4