6.8 Auto-Tuning Errors
514 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Code Name Causes Possible Solutions
Er-02 Drive in an Alarm State
The motor nameplate data entered during Auto-
Tuning is incorrect.
• Make sure that the motor nameplate data entered in Auto-Tuning
is correct.
• Do Auto-Tuning again and correctly set the motor nameplate
data.
You did Auto-Tuning while the drive had a minor
fault or alarm.
Clear the minor fault or alarm and do Auto-Tuning again.
There is a defective motor cable or cable connection. Examine and repair motor wiring.
The load is too large. • Decrease the load.
• Examine the machine area to see if, for example, the motor shaft
is locked.
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.
Code Name Causes Possible Solutions
Er-03 OFF Button was Pressed
You pushed during Auto-Tuning.
Auto-Tuning did not complete correctly. Do Auto-Tuning again.
Code Name Causes Possible Solutions
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.
Code Name Causes Possible Solutions
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.
Code Name Causes Possible Solutions
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.
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