Mitsubishi Electric FR-D720S SC EC Instruction Manual page 123

Basic settings
NOTES
This function is valid only when a value other than "9999" is set in Pr. 80 and General-pur-
pose magnetic flux vector control is selected.
You can copy the offline auto tuning data (motor constants) to another inverter with the PU
(FR-PU07).
Even when motors (other manufacturer's motor, SF-JRC, etc.) other than Mitsubishi stand-
ard motor, high efficiency motor (SF-JR, SF-HR 0.2kW or more), and Mitsubishi constant-
torque motor (SF-JRCA, SF-HRCA four-pole 0.2kW to 7.5kW) are used or the wiring length
is long, using the offline auto tuning function runs the motor with the optimum operating
characteristics.
Tuning is enabled even when a load is connected to the motor. As the motor may run slightly,
fix the motor securely with a mechanical brake or make sure that there will be no problem in
safety if the motor runs (caution is required especially in elevator). Note that tuning perform-
ance is unaffected even if the motor runs slightly.
Reading/writing/copy of motor constants tuned by offline auto tuning are enabled.
The offline auto tuning status can be monitored with the operation panel and PU (FR-PU04/
FR-PU07).
Do not connect a surge voltage suppression filter (FFR-DT or FFR-SI) between the inverter
and motor.
Check the following before performing offline auto tuning:
● Make sure general-purpose magnetic flux vector control (Pr. 80) is selected (refer to section
5.1.7). (Tuning can be performed even under V/f control selected by turning on X18.)
● A motor should be connected. Note that the motor should be at a stop at a tuning start.
● The motor capacity should be equal to or one rank lower than the inverter capacity. (Capacity
should be 0.1kW or more.)
● A high-slip motor, high-speed motor and special motor cannot be tuned.
(The maximum frequency is 120Hz.)
● As the motor may run slightly, fix the motor securely with a mechanical brake or make sure
that there will be no problem in safety if the motor runs (caution is required especially in
elevator). Note that tuning performance is unaffected even if the motor runs slightly.
● Do not connect a surge voltage suppression filter (FFR-DT or FFR-SI) between the inverter
and motor.
FR-D700 SC EC
Simple mode parameter list
5 - 15