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3-28
3-6 Auto-tuning Mode
The auto-tuning function automatically tunes and sets the required motor parameters
when operating in the open-loop or flux vector control modes.
When
the rated voltage, rated current, rated frequency
, rated rotational frequency
, and
number of poles listed on the motor’s nameplate have been input and the Run Key is
pressed, the motor parameters calculated from these values are written to E1-01
through E2-08 automatically.
The auto-tuning mode won’t be displayed if V/f control has been selected.
S Precautions for Auto-tuning Operation
Caution Do
not connect a load to the motor when performing auto-tuning. Doing so may re
-
sult in personal injury or equipment damage.
• The
Inverter
’
s auto-tuning function automatically determines the motor parameters while a servo sys
-
tem’s auto-tuning function determines the size of a load, so these auto-tuning functions are funda-
mentally different.
• If
a load is connected when auto-tuning is performed, not only will incorrect motor parameters be re
-
corded, but the motor may operate erratically resulting in dangerous conditions such as loads
falling
from vertical axis motors. Never perform auto-tuning with a load connected to the motor.
Preparing for Operation Chapter
3
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