Delta ASDA-A3 Series User Manual page 1191

Troubleshooting
AL075 Encoder absolute number of revolutions is in error
Trigger condition
and cause
14
Checking method
and corrective action
How to clear the
alarm?
AL077 Encoder internal error
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL079 Encoder parameter setting incomplete
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
14-44
The absolute number of revolutions in the encoder is in error.
Check if the motor is properly grounded. Make sure the ground end (green) 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 motor speed and make sure it is within the rated range.
4.
If the issue persists, send your servo motor back to the distributor or contact Delta.
Cycle power on the servo drive.
Encoder internal error (internal computing error).
Check if the motor is properly grounded. Make sure the ground end (green) 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 motor speed and make sure it is within the rated range.
4.
If the issue persists, send your servo motor back to the distributor or contact Delta.
Cycle power on the servo drive.
The servo drive is not cycled after the encoder parameter is written to the encoder,
so the parameter value is not updated.
Check if the encoder parameter is written. If so, cycle power to activate the
parameter.
Cycle power on the servo drive.
ASDA-A3