Delta ASDA-A3 Series User Manual page 1168

ASDA-A3
AL026 Encoder unreliable internal data
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL027 Encoder internal reset error
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
Condition: internal data error occurs three consecutive times.
Cause:
External interference.
1.
Malfunction of the encoder hardware.
2.
If there is interference, check the following items:
Check if the motor is properly grounded. Make sure the ground end (encd) of
1.
the power cable is grounded to the servo drive heat sink.
Check if the connection for the encoder signal cable is normal. Make sure the
2.
encoder signal cable is separated from the power supply or any high-current
cables to avoid interference.
Use shielded cable for the encoder cable. Pull out the wire mesh and have it
3.
correctly grounded.
Check the communication error rate by setting P0.002 to -80. If the value is
4.
greater than 0 and increases continuously, check the previous three items
again. If the value is 0, send your servo motor back to the distributor or
contact Delta.
Cycle power on the servo drive.
Condition: encoder reset error.
Cause: encoder reset.
Check if there is poor connection for the encoder signal cable.
1.
Check if the power supply for the encoder is stable and make sure to use
2.
shielded cable.
Check if the operating temperature is over 95°C (203°F). Identify the cause for
3.
the high temperature and do not restart the operation before the temperature
drops to the allowable range.
If the issue persists, send your servo motor back to the distributor or contact Delta.
Cycle power on the servo drive.
Troubleshooting
14
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