Cause of tuning er-
ror
Error sub
code
Cause and countermeasure
Tuning result abnor-
mality
When unbalance between phases or a phase loss is detected, or when
an open output or short-circuit causes the tuning result to be abnormal-
ly small or large
→Check that there is no error occurring in the wiring between the in-
verter and motor.
→When there is an electromagnetic contactor (MC) between the inver-
ter and motor, check to see if the contact is open.
6-8-2
Online Tuning
When dynamic torque vector control or slip compensation control is adopted and operation is per-
formed for a long time, motor constants change according to the rise in motor temperature. When mo-
tor constants change, the speed compensation amount of the motor changes, and this sometimes re-
sults in the motor speed deviating from the initial motor rotation speed. By enabling online tuning, the
motor constants corresponding to the change in motor temperature are identified and fluctuation in
motor speed is reduced.
Online tuning can be used in either of the following cases after having performed rotation tuning by
auto-tuning.
•
When 1st Drive Control Selection (F42)/2nd Drive Control Selection (A14) is set to “1: IM Dynamic
torque vector control”
•
When 1st Drive Control Selection (F42)/2nd Drive Control Selection (A14) is set to “0: IM V/f con-
trol,” and Slip compensation Function Selection (H442) is set to “1: V
alid” and 1st Torque Boost
Function Selection (E112)/2nd Torque Boost Function Selection (E113) is set to “1: Automatic torque
boost”
Parameter
No.
Function name Data Default data Unit
P05/A19
1st Online Tuning Func-
tion Selection/2nd Online
tuning Function Selection
0: Disable
1: Enable
0 -
6 Vector Control and Applied Functions
6-71
M1 Series Standard Type User's Manual (I669)
6-8 Motor tuning
6
6-8-2 Online Tuning
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