Toshiba VF-S15 Instruction Manual page 199

[Selection 4: Setting vector control and manual tuning independently]
If an "etn1" tuning error is displayed during auto-tuning or when vector control characteristics are to be
improved, set independent motor constants.
[Parameter setting]
*1: Default setting values vary depending on the setup menu setting. Refer to section 11.5.
Setting procedure Adjust the following parameters:
f401: Set the compensation gain for the slipping of the motor. A higher slip frequency reduces motor
f402: Adjust the primary resistive component of the motor. Torque reduction due to possible voltage drop
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.
f416: Set the ratio of the no-load current of the motor to the rated current. Enter the value in % that is
f417: Set the rated rotational speed of the motor. For the rated current, see the motor's nameplate or test
● 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
thr : If the rated capacity of the motor is one size smaller than that of the inverter, lower the thermal
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Title Function
f401
Slip frequency gain
f402 Automatic torque boost value
f405 Motor rated capacity
f415
Motor rated current
f416
Motor no-load current
f417
Motor rated speed
f459 Load inertia moment ratio
f462
Speed reference filter coefficient
Motor electronic thermal
thr
protection level 1
slipping correspondingly. After setting f417, set f401 for fine adjustment. Be careful as
inputting a value larger than necessary causes hunting and other unstable operation.
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 and then cause
a trip at low speeds. (Perform adjustments according to the actual operation.)
obtained by dividing the no-load current specified in the motor's test report by the rated current. A
larger value increases the excitation current.
report.
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 1x. When the
moment of inertia of the load is not 1x, set a value that matches that actual moment of inertia of
the load.
protective level according to the rated current of the motor.
Caution:
If a combination of the inverter rating and the motor capacity is different for more than 2 classes,
vector control may not operate correctly.
Adjustment range
0-250 (%）
0.1-30.0 (%)
0.01-22.00 (kW)
0.01-100.0 (A)
10-90 (%)
-1
100-64000 (min )
0.1-100.0 (times)
0-100
10-100 (%) / (A)
F-87
E6581611
Default setting
70
Depends on
the capacity
(Refer to
section 11.4)
*1
1.0
35
100
6