Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации

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Selection and protection of a motor Parameter
6 - 76
Before performing offline auto tuning
Check the following before performing offline auto tuning.
●
Make sure general-purpose magnetic flux vector control (Pr. 80) is selected. (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.)
●
Offline auto tuning will not be performed properly if it is performed with a surge voltage
suppression filter (FFR-DT or FFR-SI) connected between the inverter and motor. Remove
it before starting tuning.
Setting
●
Select general-purpose magnetic flux vector control (refer to section 6.2.2).
●
Set "11" in Pr. 96 "Auto tuning setting/status" for tuning the motor constant R1 without running
the motor. It takes approximately 9s until tuning is completed.
●
Set the rated motor current (initial value is rated inverter current) in Pr. 9 "Electronic thermal
O/L relay". (Refer to section 6.7.)
●
Set the rated voltage of motor (initial value is 400V) in Pr. 83 "Motor rated voltage" and rated
motor frequency (initial value is 50Hz) in Pr. 84 "Rated motor frequency".
●
Set Pr. 71 "Applied motor" according to the motor used.
Refer to section for other settings of Pr. 71.
b
CAUTION:
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.
Motor Pr. 71
Mitsubishi standard motor
Mitsubishi high efficiency motor
SF-JR 3
SF-JR 4P-1.5 kW or less 23
SF-HR 43
Others 3
Mitsubishi constant-torque motor
SF-JRCA 4P 13
SF-HRCA 53
Others (SF-JRC, etc.) 13
Other manufacturer's standard motor — 3
Other manufacturer's constant-torque motor — 13
Tab. 6-8: Motor selection