Delta ASDA-A3 Series User Manual page 776

ASDA-A3
AL079 Encoder parameter error
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL07B Encoder memory busy
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL07C Command to clear the absolute position is issued when the motor speed
is over 200 rpm
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL07D Motor stops operating when servo drive power is cycled before AL07C is cleared
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
The encoder is not cycled after the parameter is written, so the parameter value is
not updated.
Check if the parameter is written to the encoder. If so, cycle the encoder to update
the parameter.
Cycle power on the servo drive.
Encoder memory is busy.
Check if the motor is properly grounded. Make sure the power cable is grounded
1.
to the servo drive heat sink.
Make sure the encoder signal cable is separated from the power supply or any
2.
high-current cables to avoid interference.
Use shielded cable for the encoder and pull out the shielded mesh and
3.
ground it.
Check the motor speed and make sure it is within the rated range.
4.
If the issue persists, send your servo drive back to the distributor or contact Delta.
Cycle power on the servo drive.
The command to clear the absolute position is issued when the motor speed is
over 200 rpm.
Check if a command to clear the absolute position is issued while the motor speed
is over 200 rpm. If so, follow the procedure for clearing the absolute position to clear
this alarm.
Do not issue a command to clear the absolute position when the motor speed is
over 200 rpm.
Cycle power on the servo drive.
AL07C occurs and is not cleared before the power is cycled on the servo drive,
and the motor stops operating.
Use DI.ARST to clear the alarm. Once this alarm is cleared, AL07C occurs.
Follow the checking and troubleshooting methods to clear that alarm.
Cycle power on the servo drive.
Troubleshooting
13
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