7
-10
Errors During Autotuning
The errors that can occur during autotuning are given in the following table. If an error is detected, the motor
will coast to a stop and 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.
Errors when Using the Digital Operator Copy Function
The errors that can occur when using the copy function from the Digital Operator are given in the following
table. An error code will be displayed on the Digital Operator. If a Digital Operator key is pressed when an
error code is being displayed, the display will be cleared and o3-01 will be displayed. The error contact output
and alarm output will not be operated.
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.
The is an error between the no-load cur-
rent setting and the input motor rated
current (when autotuning for only line-
to-line resistance is performed for vector
control).
• Check the input data.
• Check the capacity of the Inverter and
motor.
• Check the motor rated current and no-
load current.
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 constant.
• Check the input data.
• Check motor wiring.
• If the motor is connected to the
machine, disconnect it.
Rated current setting
alarm
*
The rated current is set too high.
Check the input data (particularly the
motor rated current).
Table 7.5 Errors during Copy Function
Func-
tion
Display
Meaning
Probable causes
Corrective Actions
Read
Digital Operator
write-protected
o3-01 was set to 1 to read constants
when the Digital Operator was write-
protected (o3-02 = 0).
Set o3-02 to 1 to enable writing con-
stants into the Digital Operators mem-
ory.
Illegal read data
The read data length does not agree.
Repeat the read.
Check the Digital Operator cable.
Replace the Digital Operator.
The read data are incorrect.
Illegal write status
An attempted write of a constant to the
EEPROM of the Digital Operator
failed.
A low Inverter voltage has been
detected.
Repeat the read.
Replace the Digital Operator.
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