YASKAWA GA50U Series

13 Troubleshooting
YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation 127
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.
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.
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.
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.
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.
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.
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.