7.7 Auto-Tuning Errors
252 SIEPCYEUOQ2V01A Q2V Technical Manual
Code Name Causes Possible Solutions
End9 Initial Pole Detection Alarm
The drive cannot calculate the correct value for n8-
84 [Polarity Det Current] during High Frequency
Injection Tuning.
When n8-35 = 2 [InitRotorPos Selection = HiFreq Injection] or
n8-57 = 1 [High-Freq Injection = Enabled], make sure that the
motor does not rotate in reverse at start.
Note:
If the drive detects End9, it will automatically set n8-35 =1
[Pull-In] and n8-57 = 0 [Disabled]. Do not change the
settings unless necessary.
Code Name Causes Possible Solutions
Er-01 Motor Data Error
The motor nameplate data entered during Auto-
Tuning is incorrect.
• Make sure that the motor nameplate data is correct.
• Do Auto-Tuning again and correctly set the motor nameplate
data.
The combination of the motor rated power and
motor rated current do not match.
• Examine the combination of drive capacity and motor output.
• Do Auto-Tuning again, and correctly set the motor rated power
and motor rated current.
The combination of the motor rated current that was
entered during Auto-Tuning and E2-03 [Mot No-
Load Current] do not match.
• Examine the motor rated current and the no-load current.
• Set E2-03 correctly.
• Do Auto-Tuning again, and correctly set the motor rated
current.
The combination of the setting values of Motor
Base Frequency and Motor Base Speed do not
match.
Do Auto-Tuning again, and correctly set the Motor Base
Frequency and Motor Base Speed.
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
prblem.
3. Do Auto-Tuning again.
Code Name Causes Possible Solutions
Er-03 STOP Button was Pressed
During Auto-Tuning, was pushed.
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.
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