10-16
10.4 Auto-tuning Error
When a fault occurs during auto-tuning of a standard AC motor, the
display will show the “AtErr” fault and the
motor stops. The fault information is displayed in parameter 17-11.
Note:
The fault contact output does not energize with an auto-tuning fault. Refer to Table 10.4.1, for fault
information during tuning, cause and corrective action.
Table 10.4.1 Auto-tuning fault and corrective actions
Error
Description
Cause
Corrective action
01
Motor data input error.
Motor Input data error
during auto-tuning.
Inverter output current
does not match motor
rated current.
Check the motor tuning
data (17-00 to 17-09).
Check inverter capacity
02
Motor lead to lead
resistance R1 tuning
error.
Auto-tuning is not
completed within the
specified time
Auto-tuning results fall
outside parameter setting
range.
Motor rated current
exceeded.
Motor was disconnected.
Check the motor tuning
data (17-00 to 17-09).
Check motor connection.
Disconnect motor load.
Check inverter current
detection circuit and
DCCTs.
Check motor installation.
03
Motor leakage
inductance tuning
error.
04
Motor rotor resistance
R2 tuning error.
05
Motor mutual
inductance Lm tuning
error.
07
Deadtime
compensation
detection error
06
Motor encoder error
PG feedback noise
Check motor rated
current.
Check PG card
grounding.
08
Motor acceleration
error (Rotational type
auto-tuning only).
Motor fails to accelerate in
the specified time (00-14=
20sec).
Increase acceleration
time (00-14).
Disconnect motor load.
09
Other
No load current is higher
than 70% of the motor
rated current.
Torque reference exceeds
100%.
Errors other than
ATE01~ATE08.
Check the motor tuning
data (17-00 to 17-09).
Check motor connection.
