E6582175
F-93
6
Setting procedure Adjust the following parameters:
f402: Adjust the primary resistive component of the motor. Decreases in torque due to a possible voltage
drop during low-speed operation can be suppressed by setting a large value in this parameter. Be
careful as setting a value larger than necessary may lead to an increased current causing a trip at
low speeds. (Perform adjustments according to the actual operation.) If the test report exists, see
the stator resistance value per phase.
f402 =
3
X
Rs X f415 / Vtype X 100 [%]
Rs is Stator resistance per phase [ohm]) Vtype is 200 or 400 [V] (depend on voltage class)
f405: Set the motor's rated capacity according to the motor's name plate or test report.
f415: Set the rated current of the motor. For the rated current, see the motor's nameplate or test report.
f417: Set the rated rotational speed of the motor. For the rated current, see the motor's nameplate or test
report.
● Adjustment method for the moment of inertia of the load
f459: Adjusts the excess response speed. A larger value gives a smaller overshoot at the
acceleration/deceleration completion point. In the default settings, the moment of inertia of the load
(including the motor shaft) value is optimally set considering a motor shaft of 1.5x. When the
moment of inertia of the load is not 1.5x, set a value that matches that actual moment of inertia of
the load.
thr : If the rated capacity of the motor is one size smaller than that of the inverter, lower the thermal
protective level according to the rated current of the motor.
*Sensorless vector control may not operate properly if the motor capacity differs from the
applicable rated capacity of the inverter by more than two grades.
Caution:
If a combination of the inverter rating and the motor capacity is different for more than 2 items, PM
motor control may not operate correctly.
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