Detailed operation by function groups
167
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Keypad display
Description
Tuning time
Determines motor stator resistance and d/q-
axis inductance (Ld, Lq) without rotating the
motor.
Approximately
90 sec
Determines motor stator resistance without
rotating the motor.
Approximately
30 sec
Determines motor d/q-axis inductance (Ld,
Lq) without rotating the motor.
Approximately
60 sec
Estimates initial pole position of the
synchronous motor by applying DC current,
without rotating the motor.
Approximately
5 sec
After obtaining the values required, PAR_51
automatically changes to “None” to stop auto-
tuning.
Error message will be displayed if correct
values cannot be obtained. If this happens,
ensure that all the motor and encoder
parameters were entered correctly, and then
repeat the auto- tuning procedure.
If an error message persists, stop the auto-
tuning procedure and contact LS ELECTRIC
technical service: www.lselectric.co.kr
Total time
elapsed:
1–2 min
Make sure to perform an auto-tuning before operating a synchronous motor with an inverter. Parameter
values related to a synchronous motor and its initial pole position may affect the inverter’s control ability.