Toshiba Tosvert VF-S15 Instruction Manual page 200

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
● 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
Caution:
6
[Selection 3: Setting PM motor control and optimization of starting torque]
Even if auto-tuning is done, motor cannot start due to heavy load, set the f915 to 4 to activate the
optimization of starting torque.
[Parameter setting]
Title
f915
●: f915=
Note2) When  (Auto-tuning error (PM motor)) trip occurs, use with f915=0.
Note3) f412, f458, f460 to f467, f480 to f499 (Motor specific coefficient 1 to 11) are
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.
*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.
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.
Function
0: Mode 0
1: Mode 1
PM control type 2: Mode 2
3: Mode 3
4: Mode 4
0 (Mode 0) : Without initial position detection (Rotor may rotate opposite direction at starting)
1 (Mode 1) : Initial position detection for high saliency motor
2 (Mode 2) : Initial position detection for high saliency motor Optimization for starting torque
3 (Mode 3) : Initial position detection for weak saliency motor
4 (Mode 4) : Initial position detection for weak saliency motor Optimization for starting torque
manufacturer setting parameters. Do not change the value of these parameters.
Adjustment range
F-88
E6581926
Default setting
3