Control Mode - Mitsubishi Electric FR-E720-008 Instruction Manual

4.3

Control mode

V/F control (initial setting), Advanced magnetic flux vector control and General-purpose magnetic flux vector control are
available with this inverter.
(1) V/F Control
It controls frequency and voltage so that the ratio of frequency (F) to voltage (V) is constant when changing frequency.
(2) Advanced (General-purpose) magnetic flux vector control
This control divides the inverter output current into an excitation current and a torque current by vector calculation and
makes voltage compensation to flow a motor current which meets the load torque.
General-purpose magnetic flux vector control is the same function as the FR-E500 series. For other cases, select
Advanced magnetic flux vector control.
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.
Wiring length from inverter to motor should be within 30m (98.4feet). (Perform offline auto tuning in the state
where wiring work is performed when the wiring length exceeds 30m (98.4feet).)

Control mode

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