Toshiba TOSVERT VF-MB1 Instruction Manual page 188

Set f400 to 2 to before the start of operation. Tuning is performed at the start of the motor.
6
[Selection 2: Setting PM motor control and manual tuning]
If an " etn1 " tuning error is displayed during auto-tuning or when vector control characteristics are to be
improved, set motor constants manually.
[Parameter setting]
f402 Automatic torque boost value
f405 Motor rated capacity
f415
f417
f459 Load inertia moment ratio
f912 Q axis inductance per phase
f913 D axis inductance per phase
thr
*1: Default setting values vary depending on the setup menu setting.
Setting procedure Adjust the following parameters:
f402 : Adjust the primary resistive component of the motor. Decreases in torque due to a possible voltage
Precautions on auto-tuning
(1) Conduct auto-tuning only after the motor has been connected and operation completely stopped.
If auto-tuning is conducted immediately after operation stops, the presence of a residual voltage
may result in abnormal tuning.
(2) Voltage is applied to the motor during tuning even though it barely rotates. During tuning, "  "
is displayed on the operation panel.
(3) Tuning is performed when the motor starts for the first time after f400 is set to 2 .
Tuning is usually completed within three seconds. If it is aborted, the motor will trip with the
display of etn1 and no constants will be set for that motor.
(4) High-speed motors or other special motors cannot be auto-tuned. For these motors, perform
manual tuning using Selection 2 described below.
(5) Provide cranes and hoists with sufficient circuit protection such as mechanical braking. Without
sufficient circuit protection, the resulting insufficient motor torque during tuning could create a risk
of machine stalling/falling.
(6) If auto-tuning is impossible or an " etn1 " auto-tuning error is displayed, perform manual tuning
with Selection 2.
Title Function
Motor rated current
Motor rated speed
Motor electronic thermal
protection level 1
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])
Adjustment range
0.1-30.0 (%)
0.01-22.00 (kW)
0.1-100.0 (A)
-1
100-64000 (min )
0.1-100.0 (times)
0.01-650.0 (mH)
0.01-650.0 (mH)
10-100 (%) / (A)
Vtype is 200 or 400 [V] (depend on voltage class)
F-68
E6581697
Default setting
Depends on
the capacity
(Refer to
section 11.4)
*1
1.0
10.00
10.00
100