7
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Errors During Autotuning
The errors that can occur during autotuning are given in the following table. If an error is detected, an error
code will be displayed on the Digital Operator. The error contact output and alarm output will not function.
* Displayed after autotuning has been completed.
Table 7.4 Errors During Autotuning
Display
Meaning
Probable causes
Corrective Actions
Motor data error
There is an error in the data input for
autotuning.
There is an error in the relationship
between the motor output and the motor
rated current.
• Check the input data.
• Check the capacity of the Inverter and
motor.
Alarm
A minor fault occurred during autotun-
ing .
• Check the input data.
• Check wiring and the machine.
• Check the load.
STOP key input
The STOP Key was pressed to cancel
autotuning.
Line-to-line resis-
tance error
Autotuning was not completed in the
specified time.
The results of autotuning has exceeded
the setting range for a user Parameter.
• Check the input data.
• Check motor wiring.
• If the motor is connected to the
machine, disconnect it.
Current detection
error
The current flow exceeded the motor
rated current.
Check the current detection circuit,
motor wiring, current detector and
installation methods.
The detected current sign was the oppo-
site of what it should be.
There is a phase fault for U, V or W.
V/f settings exces-
sive
*
The torque reference exceeded 100%
and the no-load torque exceeded 70%
during autotuning.
• Check and correct the settings.
• Disconnect the load from the motor.
Rated current setting
alarm
*
The rated current is set high.
Check the input data (particularly the
motor output current and motor rated
current).
