8.Maintenance
Trouble shooting when alarm occurs
8-17
■
Alarm Code 72 (Control Circuit Under-voltage 1)
Status at the time of alarm
Cause
1
2
Issued when power supply control is turned ON.
✔
✔
◆
Corrective actions
Cause
Investigation and corrective actions
1
■
Defect in internal circuit of driver.
■
Replace the driver.
2
■
Defect in external circuit.
■
Restart the power supply after removing
the connector; if alarm is not issued,
check the external circuit.
■
Restart the power supply after replacing
the converter; if alarm is not issued,
there is defect in internal circuit of
converter.
■
Alarm Code 73 (Control Circuit Under-voltage 2)
Status at the time of alarm
Cause
1
2
Issued when power supply control is turned ON.
✔
✔
◆
Corrective actions
Cause
Investigation and corrective actions
1
■
Defect in internal circuit of driver.
■
Replace the driver.
2
■
Defect in external circuit.
■
Restart the power supply after removing
the connector; if alarm is not issued,
check the external circuit.
■
Alarm Code 84 (Serial Encoder Communication Error)
Status at the time of alarm
Cause
1
2
3
Issued when power supply control is turned ON.
✔
✔
✔
Issued during operation.
✔
◆
Corrective actions
Cause
Investigation and corrective actions
1
■
Defect in internal circuit of converter.
■
Replace the converter.
2
■
Malfunction due to noise.
■
Confirm proper grounding of the driver.
■
Add ferrite core or similar
countermeasures against noise.
3
■
Converter encoder wiring has
abnormalities.
■
Check wiring and replace if necessary.
Summary of Contents for M-EGA-15A2301
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