YASKAWA CIPR-GA50C series, Technical Manual

Page: 273 / 766

T
roubleshooting
7
7.7 Auto-Tuning Errors
YASKAWA SIEPC71061753A GA500 Technical Manual 273
7.7 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.
Code Name Causes Possible Solutions
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.
Auto-Tuning results were not in the applicable
parameter setting range, and
E2-07 or E2-08 [Motor
Saturation Coefficient 2] have temporary values.
• 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.
Code Name Causes Possible Solutions
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.
Code Name Causes Possible Solutions
End4 Adjusted Slip Calculation Error 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 [Motor Saturation
Coefficient 2] is not in the applicable range.
The secondary resistor measurement results were
not in the applicable 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.
Code Name Causes Possible Solutions
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.
Code Name Causes Possible Solutions
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.
A1-02 [Control Method Selection] setting is not
applicable.
• Examine the value set in A1-02 .
• Make sure that the input motor nameplate data is correct, and
do Auto-Tuning again.
Code Name Causes Possible Solutions
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.
Auto-Tuning results were less than 5% of the motor
rated current. Make sure that the input motor nameplate data is correct, and do
Auto-Tuning again.
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 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.