YASKAWA
TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
165
Code
Name
Causes
Possible Solutions
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.
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.