High Accuracy Operation Unaffected By The Motor Temperature; Online Auto Tuning - Mitsubishi Electric FR-A700 Instruction Manual

Simple mode parameter list
5.1.10 High accuracy operation unaffected by the motor temperature (online
auto tuning)
When online auto tuning is selected under advanced magnetic flux vector control, real sensor-
less vector control or vector control, excellent torque accuracy is provided by temperature com-
pensation even if the secondary resistance value of the motor varies with the rise of the motor
temperature.
Pr.
Name
No.

Online auto tuning

95
selection
Start-time online auto tuning (Pr. 96 = 1)
● By quickly tuning the motor constants at a start, high accuracy operation unaffacted 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 ) or real sensorless vector
control (Pr.800 ) is selected. (Refer to section 5.1.7.)
● Before performing online auto tuning, perform offline auto tuning without fail.
Operation method:
Check that "3" or "103" (offline auto tuning completion) is set in Pr. 96 "Auto tuning setting/
status".
Set "1" (start-time online auto tuning) in Pr. 95 "Online auto tuning selection". Online auto
tuning is performed from the next starting.
When performing PU operation, press the FWD or REV key of the operation panel. For
external operation, turn on the run command (STF signal or STR signal).
b
CAUTION:
For using start-time online auto tuning in vertical lift applications, examine the
utilization of a brake sequence for the brake opening timing at a start. Torque is not
provided fully during the tuning period. Therefore, note that there may be a possibility
of drop due to gravity.
5 - 30
Magnetic flux Magnetic flux Magnetic flux Sensorless Sensorless Sensorless
Initial
Setting Range
Value
0
0 1
2
Vector Vector Vector
Description
Online auto tuning is not performed
Start-time online auto tuning
Magnetic flux observer (normal tuning)
Basic settings