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.
Table 7.4 Errors During Autotuning
Display
Meaning
Probable causes
Corrective Actions
ER-01
Data Invalid
Motor data error
There is an error in the relationship
between the rated frequency, the rated
number of motor rotation, and the num-
ber of motor pole.
Correct the data as follows: number of
motor rotation < 120
×
rated frequency/
number of motor pole.
ER-02
Accelerate
Acceleration error
The motor did not
accelerate in the spec-
ified time.
• Torque limits function is operating.
• Acceleration time is too long.
• The load is connected to the motor.
• Check and correct the setting values of
L7-01 to 04 (torque limits).
• Increase the setting value of the C1-01
(Acceleration Time).
• Disconnect the load from the motor.
ER-03
PG Direction
Motor Direction
Error
Speed reference and
speed feedback indi-
cations differ when
the torque command
exceeds 100%.
There is a faulty connection between the
Inverter, PG (A-phase and B-phase), and
motor (U-phase, V-phase, and W-phase).
• Check the PG wiring.
• Check the motor wiring.
• Check the PG rotation direction and
setting value of H7-05 (PG rotation
direction).
ER-04
Motor Speed
Motor speed error
Torque reference
value has exceeded
100% for 3 seconds
during autotuning.
• The motor power cable is discon-
nected.
• The load is connected to the motor.
• Check the wiring and correct the dis-
connection.
• Disconnect the load from the motor.
ER-05
Resistance
Line-to-line resis-
tance error
• Autotuning was not completed in the
specified time.
• The setting value of the motor rated
current is wrong.
• The motor power cable is discon-
nected.
• Check and correct the input data.
• Check the wiring and correct the dis-
connection.
ER-06
No-Load Current
No-load current error
ER-07
Motor core satura-
tion 1
Motor core satura-
tion error 1
ER-08
Motor core satura-
tion 2
Motor core satura-
tion error 2
ER-09
Rated FLA Alm
Rated current setting
alarm
• Autotuning was not completed in the
specified time.
• The load is connected to the motor.
Disconnect the load from the motor.
ER-10
STOP key
STOP key input
The STOP Key was pressed to cancel
autotuning.
−
ER-11
I-det. Circuit
Current detection
error
The current flow
exceeded the motor
rated current.
The detected current
sign was the opposite
of what it should be.
• The setting value of the motor rated
current is wrong.
• There is an error in the current detec-
tor.
• Check and correct the input data.
• Check the current detection circuit,
motor wiring, current detector, and
installation methods.
ER-12
Base Block
Base block stop
The base block command was input
from the PLC to cancel autotuning.
Clear the base block command from the
PLC.
