Instruction manual

115
4
PARAMETERS
4.2.34 General-purpose magnetic flux vector control selection (Pr. 80)
Pr. 80 "motor capacity"
You can set the general-purpose magnetic flux vector control.
 General-purpose magnetic flux vector control
Provides large starting torque and sufficient low-speed torque.
If the motor constants vary slightly, stable, large low-speed torque is provided without
specific motor constant setting or tuning.
If any of the following conditions are not satisfied, faults such as torque shortage and
speed fluctuation may occur. In this case, select V/F control.
<Operating conditions>
• The motor capacity is equal to or one rank lower than the inverter capacity.
• The number of motor poles is any of 2, 4, and 6. (4 poles only for the constant-torque
motor)
• Single-motor operation (one motor for one inverter) is performed.
• The wiring length between the inverter and motor is within 30m (98.42 feet). (If the
length is over 30m (98.42 feet), perform offline auto tuning with the cables wired.)
<Setting>
(1) General-purpose magnetic flux vector control
• The general-purpose magnetic flux vector control can be selected by setting the
capacity of the motor used in Pr. 80.
• When using constant-torque motor, set "1" in Pr. 71.
Parameter
Number
Factory
Setting
Setting Range Remarks
80 9999
0.4kW to 7.5kW,
9999
9999: V/F control
Parameter
Number
Setting Description
80
9999 V/F control
0.4 to 7.5 Set the motor capacity applied.
General-purpose magnetic
flux vector control
Pr. 71 "applied motor"
Pr. 83 "rated motor voltage"
Pr. 84 "rated motor frequency"
Pr. 96 "auto-tuning setting/status"
Related parameters
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