YASKAWA GA50U Series

13 Troubleshooting
YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation 129
Code Name Causes Possible Solutions
The drive detected a minor fault
during Auto-Tuning.
1. Stop Auto-Tuning.
2. Examine the minor fault code and
remove the cause of the problem.
3. Do Auto-Tuning again.
Er-03
STOP Button was
Pressed
During Auto-Tuning, was
pushed.
Auto-Tuning did not complete correctly. Do
Auto-Tuning again.
Er-04
Line-to-Line Resistance
Error
The Auto-Tuning results were not
in the applicable parameter setting
range.
Auto-Tuning did not complete in a
pre-set length of time.
There is a defective motor cable or
cable connection.
• Examine and repair motor wiring.
• Disconnect the machine from the motor
and do Rotational Auto-Tuning again.
The motor nameplate data entered
during Auto-Tuning is incorrect.
• Make sure that the input motor
nameplate data is correct.
• Do Auto-Tuning again and correctly set
the motor nameplate data.
Er-05 No-Load Current Error
The Auto-Tuning results were not
in the applicable parameter setting
range.
Auto-Tuning did not complete in a
pre-set length of time.
• Examine and repair motor wiring.
• Disconnect the machine from the motor
and do Rotational Auto-Tuning again.
The motor nameplate data entered
during Auto-Tuning is incorrect.
• Make sure that the input motor
nameplate data is correct.
• Do Auto-Tuning again and correctly set
the motor nameplate data.
Rotational Auto-Tuning was done
with a load that was more than
30% of the rating connected to the
motor.
• Disconnect the machine from the motor
and do Rotational Auto-Tuning again.
• If you cannot uncouple the motor and
load, make sure that the load is less than
30% of the motor rating. If a mechanical
brake is installed in the motor, release the
brake during Rotational Auto-Tuning.
Er-08 Rated Slip Error
The motor nameplate data entered
during Auto-Tuning is incorrect.
• Make sure that the input motor
nameplate data is correct.
• Do Auto-Tuning again and correctly set
the motor nameplate data.
Auto-Tuning did not complete in a
pre-set length of time.
The Auto-Tuning results were not
in the applicable parameter setting
range.
• Examine and repair the motor wiring.
• If the motor and machine are connected
during Rotational Auto-Tuning, decouple
the motor from the machinery.
Rotational Auto-Tuning was done
with a load that was more than
30% of the rating connected to the
motor.
• Disconnect the machine from the motor
and do Rotational Auto-Tuning again.
• If you cannot uncouple the motor and
load, make sure that the load is less than
30% of the motor rating. If a mechanical
brake is installed in the motor, release the
brake during Rotational Auto-Tuning.