YASKAWA GA700 Series Technical Manual page 354

7.5 Minor Faults/Alarms
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 assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
• If the drive detects this error, it will operate the motor as specified by the stop 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 assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
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 Com Error / Abnormal SD card
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 6A [MFDO Function Selection = Data Logger Error] will activate.
Code Name
LT-1 Cooling Fan Maintenance Time
Note:
When the estimated performance life is expired, the terminal set to H2-01 to H2-03 = 2F [MFDO Function Selection = Maintenance Notification] will activate.
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
SoftChargeBypassRelay
LT-3
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.
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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 is not correct.
• 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.
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
• 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. 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.
YASKAWA SIEPC71061705H GA700 Series Technical Manual