Filter
Top Products
4
PARAMETERS
199
Selection and protection of a motor
4.13.4 Online auto tuning (Pr. 95, Pr. 574)
(1) Start-time online auto tuning (Pr. 95 = "1")
· By quickly tuning the motor constants at a start, high accuracy operation unaffected by the motor temperature and
stable operation with high torque down to ultra low speed can be performed.
· Make sure Advanced magnetic flux vector control (Pr. 80, Pr. 81), Real sensorless vector control or vector control (Pr.
800 ) is selected.
· Before performing online auto tuning, perform offline auto tuning without fail.
<Operation method>
1) Refer to page 189 to perform offline auto tuning.
2) Check that "3" or "103" (offline auto tuning completion) is set in Pr. 96 Auto tuning setting/status.
3) Set "1" (start-time online auto tuning) in Pr. 95 Online auto tuning selection.
Online auto tuning is performed from the next starting.
4) Before starting operation, check that the following parameters have been set.
5) When performing PU operation, press / of the operation panel.
For External operation, turn ON the run command (STF signal or STR signal).
When online auto tuning is selected under Advanced magnetic flux vector control, Real sensorless vector control
or vector control, excellent torque accuracy is provided by temperature compensation even if the secondary
resistance value of the motor varies with the rise of the motor temperature.
Parameter
Number
Name
Initial
Value
Setting Range Description
95
Online auto tuning
selection
0
0 Online auto tuning is not performed
1 Start-time online auto tuning
2 Magnetic flux observer (normal tuning)
574
Second motor online
auto tuning
00, 1
Select the second motor online auto tuning.
(same as Pr. 95)
Parameter
Number
Description
9 Used as rated motor current and electronic thermal relay parameters.
71 Applied motor
80
Motor capacity (down to one rank lower than the inverter capacity, note
that the capacity should be 0.4kW or higher)
81 Number of motor poles
CAUTION
· For using start-time online auto tuning in elevator, examine the utilization of a brake sequence for the brake opening timing at a
start. Though the tuning ends in about a maximum of 500ms after a start, torque is not provided fully during that period.
Therefore, note that there may be a possibility of drop due to gravity.
It is recommended to perform tuning using a start time tuning signal (X28). (Refer to page 201.)
Magnetic flux
Magnetic flux
Magnetic flux
Sensorless
Sensorless
Sensorless
Vector
Vector
Vector