Auto-Tuning Errors - Omron Q2V Series Technical Manual

7.7

Auto-Tuning Errors

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
End1 Excessive Rated Voltage Setting
Code Name
End2 Iron Core Saturation Coefficient
Code Name
End3 Rated Current Setting Alarm
Code Name
End4 Adjusted Slip Calculation Error
Code Name
End5 Resistance Tuning Error
Code Name
End6 Leakage Inductance Alarm
Code Name
End7 No-Load Current Alarm
Code Name
End8 HFI Alarm
SIEPCYEUOQ2V01A Q2V Technical Manual
Causes
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%.
Causes
The motor nameplate data entered during Auto-
Tuning is incorrect.
Auto-Tuning results were not in the applicable
parameter setting range, and E2-07 or E2-08 [Mbus
Reg1 Bit Select] have temporary values.
Causes
The rated current value is incorrect.
Causes
The Auto-Tuning results were not in the applicable
parameter setting range.
The motor rated slip that was measured after
Stationary Auto-Tuning was 0.2 Hz or lower.
The motor rated slip that was measured after
compensation with E2-08 [Mbus Reg1 Bit Select] is
not in the applicable range.
The secondary resistor measurement results were
not in the applicable range.
Causes
The Auto-Tuning results of the Line-to-Line
Resistance were not in the applicable range.
Causes
The Auto-Tuning results were not in the applicable
parameter setting range.
A1-02 [Control Method] setting is not applicable.
Causes
The Auto-Tuning results of the motor no-load
current value were not in the applicable range.
Auto-Tuning results were less than 5% of the motor
rated current.
Causes
• Inductance saliency ratio (E5-07/E5-06) is too
small.
• The drive cannot find the n8-36 [HFI Signal
Frequency] value.

7.7 Auto-Tuning Errors

Possible Solutions
• 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.
Possible Solutions
• Make sure that the input motor nameplate data is correct.
• Do Auto-Tuning again and correctly set the motor nameplate
data.
• Examine and repair damaged motor wiring.
• If you can uncouple the motor and load, remove the motor
from the machine and do Rotational Auto-Tuning again.
Possible Solutions
Do Auto-Tuning again and set the correct rated current shown on
the motor nameplate.
Possible Solutions
• 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.
Possible Solutions
• Make sure that the input motor nameplate data is correct.
• Examine and repair damaged motor wiring.
Possible Solutions
Make sure that the input motor nameplate data is correct, and do
Auto-Tuning again.
• Examine the value set in A1-02.
• Make sure that the input motor nameplate data is correct, and
do Auto-Tuning again.
Possible Solutions
Examine and repair damaged motor wiring.
Make sure that the input motor nameplate data is correct, and do
Auto-Tuning again.
Possible Solutions
• Set the correct value on the motor nameplate to [E5: PM
MOTOR SETTINGS] or do rotational/stationary Auto-Tuning.
• When it is necessary to set n8-35 = 2 [InitRotorPos Selection
= HiFreq Injection] or n8-57 = 1 [High-Freq Injection =
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 =1
[Pull-In] and n8-57 = 0 [Disabled]. Do not change the
settings unless necessary.
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