7.7 Auto-Tuning Errors
408 YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Code Name Causes Possible Solutions
End8 HFI Alarm
• Inductance saliency ratio (E5-07/E5-06) is too
small.
• The drive cannot find the n8-36 [HFI Frequency
Level for L Tuning] value.
• Set the correct value on the motor nameplate E5-xx [PM motor
parameters] or do Stationary/Rotational Auto-Tuning, and then
do High Frequency Injection Tuning again.
• When it is necessary to set n8-35 = 1 [Initial Pole Detection
Method = High Frequency Injection] or n8-57 = 1 [HFI Overlap
Selection = Enabled], make sure that there is no unusual noise in
the low speed range (10% or less) and that the motor does not
rotate in reverse at start.
If there is unusual noise in the low speed range (10% or less),
increase n8-41 in increments of 0.5. Set n8-41 > 0.0 for IPM
motors.
Note:
If the drive detects End8, it will automatically set n8-35 =0
[Pull-in] and n8-57 = 0 [Disabled]. Do not change the settings
unless necessary.
Code Name Causes Possible Solutions
End9 Initial Pole Detection Alarm
The drive cannot calculate the correct value for n8-84
[Polarity Detection Current] during High Frequency
Injection Tuning.
• Set the correct value on the motor nameplate E5-xx [PM motor
parameters] or do Stationary/Rotational Auto-Tuning, and then
do High Frequency Injection Tuning again.
• When n8-35 = 1 [Initial Pole Detection Method = High
Frequency Injection] or n8-57 = 1 [HFI Overlap Selection =
Enabled], make sure that the motor does not rotate in reverse at
start.
If there is unusual noise in the low speed range (10% or less),
increase n8-41 in increments of 0.5. Set n8-41 > 0.0 for IPM
motors.
Note:
If the drive detects End9, it will automatically set n8-35 =0
[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 [Motor 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
problem.
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.
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