YASKAWA GA700 Technical Manual page 368

6.5 Minor Faults/Alarms
Code Name
LoG Com Error / Abnormal SD
card
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 6A [MFDO Function Select = Data Logger Error] will be ON.
Code Name
LT-1 Cooling Fan Maintenance
Time
Note:
When the estimated performance life is expired, the terminal assigned to H2-01 to H2-03 = 2F [MFDO Function Select = Maintenance
Notification] will be ON.
Code Name
LT-2 Capacitor Maintenance
Time
Note:
When the estimated performance life is expired, the terminal assigned to H2-01 to H2-03 = 2F [MFDO Function Select = Maintenance
Notification] will be ON.
Code Name
LT-3 SoftChargeBypassRelay
MainteTime
Note:
When the estimated performance life is expired, the terminal assigned to H2-01 to H2-03 = 2F [MFDO Function Select = Maintenance
Notification] will be ON.
Code Name
LT-4 IGBT Maintenance Time
(50%)
Note:
When the estimated performance life is expired, the terminal assigned to H2-01 to H2-03 = 2F [MFDO Function Select = Maintenance
Notification] will be ON.
Code Name
oH Heatsink Overheat
368
Causes
There is not a micro SD in the keypad.
• The drive is connected to USB.
• The number of log communication
files is more than 1000.
• The micro SD card does not have
available memory space.
• The line number data in a log
communication file was changed.
• A communication error between the
keypad and drive occurred during a
log communication.
Causes
The cooling fan is at 90% of its
expected performance life.
Causes
The capacitors for the main circuit and
control circuit are at 90% of expected
performance life.
Causes
The soft charge bypass relay is at 90%
of its expected performance life.
Causes
The IGBT is at 50% of its expected
performance life.
Causes
The ambient temperature is high and the
heatsink temperature is more than the
L8-02 [Overheat Alarm Level].
There is not sufficient airflow around
the drive.
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Possible Solutions
Put a micro SD card in the keypad.
Set o5-01 = 0 [Log Start/Stop Selection = OFF].
Possible Solutions
1. Use the procedures in this manual to replace the
cooling fan.
2. Set o4-03 = 0 [Fan Operation Time Setting = 0
h] to reset the cooling fan operation time.
Possible Solutions
Replace the control board or the drive. For
information about replacing the control board,
contact Yaskawa or your nearest sales
representative.
Possible Solutions
Replace the control board or the drive. For
information about replacing the control board,
contact Yaskawa or your nearest sales
representative.
Possible Solutions
Check the load, carrier frequency, and output
frequency.
Possible Solutions
• Measure the ambient temperature.
• Increase the airflow around the drive.
• Install a cooling device (cooling fan or air
conditioner) to lower the ambient temperature.
• Remove objects near the drive that are producing
too much heat.
• Give the drive the correct installation space as
shown in the manual.
• Make sure that there is sufficient circulation
around the control panel.
• Examine the drive for dust or other unwanted
materials that could clog the cooling fan.
• Remove unwanted materials that prevent air
circulation.