Cause of tuning er-
ror
Alarm code:
25 Hex
Error sub
code
Cause and countermeasure
Insufficient magnetic
saturation
13C0 Hex
When the magnetic saturation characteristic of the motor is small and
the magnetic pole position cannot be distinguished
→Increase the value of 3007Hex-58Hex in stages taking about 120%
as the upper limit. When there is no apparent effect, set
3007Hex-1FHex = 0 or 3, and set to about 3004Hex-19Hex = 0.5 to
5.0 s.
Excessive magnetic
saturation
13C1 Hex
When the magnetic saturation characteristic of the motor is large, and
a large current flows for distinguishing the magnetic pole position,
which is dangerous
→Set 3007Hex-58Hex to a small value.
T
uning result abnor-
mality
13C3 Hex
5065 Hex
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.
7-8-2
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 (3004Hex-2BHex)/2nd Drive Control Selection (3009Hex-0FHex)
is set to “1: IM Dynamic torque vector control”
•
When 1st Drive Control Selection (3004Hex-2BHex)/2nd Drive Control Selection (3009Hex-0FHex)
is set to “0: IM V/f control,” and Slip compensation Function Selection (3052Hex-2BHex) is set to “1:
Enable” and 1st Torque Boost Function Selection (301FHex-0DHex)/2nd Torque Boost Function Se-
lection (301FHex-0EHex) is set to “1: Automatic torque boost”
Parameter No. Function name Data
Default da-
ta
Unit
3007Hex-06Hex/
3009Hex-14Hex
1st Online Tuning Function Se-
lection/2nd Online tuning Func-
tion Selection
0: Disable
1: Enable
0 -
7 Vector Control and Applied Functions
7-71
M1 Series EtherCAT Type User’s Manual (I670)
7-8 Motor tuning
7
7-8-2 Online Tuning
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