19 Troubleshooting
YASKAWA TOEPC71061737B GA800 Drive Installation & Primary Operation 125
◆ Auto-Tuning Errors
This table gives information about errors detected during Auto-Tuning. If the drive detects an Auto-Tuning error, the
keypad will show the error and the motor will coast to stop. The drive will not send notification signals for faults and
alarms when Auto-Tuning errors occur.
Two types of Auto-Tuning errors are: Endx and Erx. Endx identifies that Auto-Tuning has successfully completed
with calculation errors. Find and repair the cause of the error and do Auto-Tuning again, or set the motor parameters
manually. You can use the drive in the application if you cannot find the cause of the Endx error.
Erx identifies that Auto-Tuning was not successful. Find and repair the cause of the error and do Auto-Tuning again.
Code Name Causes Possible Solutions
End1 Excessive Rated Voltage Setting
The torque reference was more than 20% during
Auto-Tuning or the no-load current that was
measured after Auto-Tuning is more than 80%.
• Make sure that the input motor nameplate data is correct.
• Do Auto-Tuning again and correctly set the motor nameplate
data.
• If you can uncouple the motor and load, remove the motor from
the machine and do Rotational Auto-Tuning again.
• If you cannot uncouple the motor and load, use the results from
Auto-Tuning.
End2 Iron Core Saturation Coefficient
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.
End3 Rated Current Setting Alarm
The rated current value is incorrect. Do Auto-Tuning again and set the correct rated current shown on the
motor nameplate.
End4 Adjusted Slip Calculation Error
The Auto-Tuning results were not in the applicable
parameter setting range.
• Make sure the input motor nameplate data is correct.
• Do Rotational Auto-Tuning again and correctly set the motor
nameplate data.
• If you cannot uncouple the motor and load, do Stationary Auto-
Tuning 2.
End5 Resistance Tuning Error
The Auto-Tuning results of the Line-to-Line
Resistance were not in the applicable range.
• Make sure that the input motor nameplate data is correct.
• Examine and repair damaged motor wiring.
End6 Leakage Inductance Alarm
The Auto-Tuning results were not in the applicable
parameter setting range.
Make sure that the input motor nameplate data is correct, and do
Auto-Tuning again.
End7 No-Load Current Alarm
The Auto-Tuning results of the motor no-load current
value were not in the applicable range.
Examine and repair damaged motor wiring.
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 to E5-xx [PM
Motor Settings] or do rotational/stationary Auto-Tuning.
• 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.
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.
End9 Initial Pole Detection Alarm
The drive cannot calculate the correct value for n8-84
[Polarity Detection Current] during High Frequency
Injection Tuning.
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.
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.
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.
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.
Er-03 STOP Button was Pressed
You pushed during Auto-Tuning.
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.
• Examine and repair motor wiring.
• Disconnect the machine from the motor and do Rotational Auto-
Tuning again.
Er-05 No-Load Current Error
The Auto-Tuning results were not in the applicable
parameter setting range.
• Examine and repair motor wiring.
• Disconnect the machine from the motor and do Rotational Auto-
Tuning again.
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