Delta ASD-A3-0121, User Manual

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ASDA-A3 Troubleshooting
Revision December, 2017
11-25
11
AL075 Absolute encoder position error
Trigger condition
and causes
Absolute encoder position error.
Checking methods
and corrective
actions
1. Check if the motor is well grounded; make sure the power cable is
grounded to the heat sink of the servo drive.
2. Make sure the encoder cable is separated from the power supply or any
high-current cables to avoid interference.
3. Use shielded cable for the encoder and pull out the shielded mesh and
ground it.
4. Check the motor speed and make sure it is within the rated range.
If the issue persists, please send your servo drive back to the distributor or
contact Delta.
How to clear the
alarm?
Cycle power on the servo drive.
AL077 Encoder computing error
Trigger condition
and causes
Encoder internal error (internal computing error).
Checking methods
and corrective
actions
1. Check if the motor is well grounded; make sure the power cable is
grounded to the heat sink of the servo drive.
2. Make sure the encoder cable is separated from the power supply or any
high-current cables to avoid interference.
3. Use shielded cable for the encoder and pull out the shielded mesh and
ground it.
4. Check the motor speed and make sure it is within the rated range.
If the issue persists, please send your servo drive back to the distributor or
contact Delta.
How to clear the
alarm?
Cycle power on the servo drive.
AL079 Encoder parameter error
Trigger condition
and causes
The encoder is not cycled after the parameter is written, so the parameter
value is not updated.
Checking methods
and corrective
actions
Check if the parameter is written to the encoder. If so, please cycle power on
the encoder to update the parameter.
How to clear the
alarm?
Cycle power on the servo drive.