Toshiba TOSVERT VF-AS3 Instruction Manual page 333

Due to residual voltage, auto-tuning may not be properly performed immediately after
running motor is stopped.
• There would be almost no rotation of the motor during offline auto-tuning, but you must keep
in mind that voltage is still applied during this time.
• During auto-offline tuning, "Atn" will be displayed on the LCD screen.
• Offline auto-tuning takes a few seconds. If any failure is found, tripping will occur with auto-
tuning error "Etn1" or "Etn2", and motor parameters will not be set.
• Offline auto-tuning cannot be performed on special motors. Calculate the motor parameters
using "Setting method 2".
• If offline auto-tuning cannot be performed or auto-tuning error "Etn1" or "Etn2" occurs, set
manually using "Setting method 3".
■ Setting method 2: Make auto-tuning of motor parameter after automatic setting.
Set PM motor control and then perform motor parameters auto calculation.
Check the motor name plate and set the following parameters first.
• <vL: Base frequency 1> (Rated frequency)
• <vLv: Base frequency voltage 1> (Rated voltage)
• <F405: Motor rated capacity>
• <F415: Motor rated current>
• <F417: Motor rated speed>
Next, set <Pt: V/f Pattern> to "6: PM motor control". For details of setting methods, refer to [5. 3. 4].
Then, select <F400> = "4: Motor parameters auto calculation (0 after execution)" and perform <vLv:
Base frequency voltage> auto calculation.
This setting can be made without connecting the motor since it only calculates.
After automatic setting of motor parameter with <F400> = "4", be sure to set <F400> to "2: Auto-
tuning at run command (0 after execution)" and execute an auto-tuning.
Since calculation is performed based on general trend, the calculation results may not be correct. In
this case, set the parameter manually.
■ Setting method 3: Manually setting motor parameter
Set <Pt: V/f Pattern> to "6: PM motor control" and set the motor parameter manually.
If tuning error "Etn1" is displayed during auto-tuning setting or when you want to improve PM motor
control characteristics, set motor parameters individually. For details of setting methods, refer to [5.
3. 4].
4) Parameter setting
Title Parameter name
F402 Automatic torque boost
F405 Motor rated capacity
F415 Motor rated current
F417 Motor rated speed
F459 Load inertia ratio
F460 Speed control response
1
Adjustment range
0.1 - 30.00
0.01 - 315.0
*1
100 - 64000
0.1 - 100.0
0.0 - 25.0
6-91
E6582062
Unit Default setting
%
*1
kW *1
*1 *1
A
-1 *2
min
Times 1.0
- 0.0
6. [Advanced] How to use parameters
3
4
6
9