YASKAWA GA50U Series

13 Troubleshooting
128 YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation
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.
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.
The combination of the motor
rated power and motor rated
current do not match.
• Examine the combination of drive
capacity and motor output.
• Do Auto-Tuning again, and correctly set
the motor rated power and motor rated
current.
The combination of the motor
rated current that was entered
during Auto-Tuning and E2-03
[Motor No-Load Current] do not
match.
• Examine the motor rated current and the
no-load current.
• Set E2-03 correctly.
• Do Auto-Tuning again, and correctly set
the motor rated current.
The combination of the setting
values of Motor Base Frequency
and Motor Base Speed do not
match.
Do Auto-Tuning again, and correctly set the
Motor Base Frequency and Motor Base
Speed.
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.
You did Auto-Tuning while the
drive had a minor fault or alarm.
Clear the minor fault or alarm and do Auto-
Tuning again.
There is a defective motor cable or
cable connection.
Examine and repair motor wiring.
The load is too large. • Decrease the load.
• Examine the machine area to see if, for
example, the motor shaft is locked.