YASKAWA GA500 Maintenance & Troubleshooting page 65

Code Name
Note:
• The drive detects this error if the PID feedback input is lower than the level set in b5-13 for longer than b5-14.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
• If the drive detects this error, it will operate the motor as specified by the stopping method set in b5-12 [Feedback Loss Detection Select].
Code Name
HCA High Current Alarm
Note:
• The drive detects this error if the drive output current is more than the overcurrent alarm level (150% of the rated current).
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name
L24v Loss of External Power 24 Supply
Note:
• Set o2-23 [External 24V Powerloss Detection] to enable or disable L24v detection.
• The drive will not output an alarm signal for this alarm.
Code Name
LoG Log Com Error
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.
YASKAWA TOEPYAIGA5001A GA500 DRIVE MAINTENANCE & TROUBLESHOOTING
Causes
A fault occurred in the feedback input circuit of the
drive.
Causes
The load is too heavy.
The acceleration time is too short.
The drive is trying to operate a specialized motor or a
motor that is larger than the maximum applicable
motor output of the drive.
The current level temporarily increased because of
speed search after a momentary power loss or while
trying to Auto Restart.
Causes
The voltage of the backup 24 V power supply has
decreased. The main circuit power supply is operating
correctly.
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.
2.5 Minor Faults/Alarms
Possible Solutions
Replace the board or the drive. For information about replacing the
control board, contact Yaskawa or your nearest sales representative.
Possible Solutions
• Decrease the load for applications with repetitive starts and
stops.
• Replace the drive with a larger capacity model.
• Calculate the torque necessary during acceleration related to the
load inertia and the specified acceleration time.
• Increase the values set in C1-01, C1-03, C1-05, or C1-07
[Acceleration Times] until you get the necessary torque.
• Increase the values set in C2-01 to C2-04 [S-Curve
Characteristics] until you get the necessary torque.
• Replace the drive with a larger capacity model.
• Examine the motor nameplate, the motor, and the drive to make
sure that the drive rated current is larger than the motor rated
current.
• Replace the drive with a larger capacity model.
If speed search or Auto Restart cause an increase in current, the
drive can temporarily show this alarm. The time that the drive
shows the alarm is short. No more steps are necessary to clear the
alarm.
Possible Solutions
• Examine the external 24 V power supply for disconnected wires
and wiring errors and repair the problems.
• Examine the external 24 V power supply for problems.
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 board or the drive. For information about replacing the
control board, contact Yaskawa or your nearest sales representative.
Possible Solutions
Replace the board or the drive. For information about replacing the
control board, contact Yaskawa or your nearest sales representative.
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