Delta ASDA-A3 Series User Manual page 531

Troubleshooting
AL07B Encoder memory busy
Trigger condition
11
and causes
Checking methods
and corrective
actions
How to clear the
alarm?
AL07C Command to clear the absolute position is issued when the motor speed is
Trigger condition
and causes
Checking methods
and corrective
actions
How to clear the
alarm?
AL07D Servo drive power is cycled before AL07C is cleared
Trigger condition
and causes
Checking methods
and corrective
actions
How to clear the
alarm?
11-26
Encoder memory is busy.
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.
Cycle power on the servo drive.
over 200 rpm
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 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.
Please follow the checking and troubleshoot methods to clear that alarm.
Cycle power on the servo drive.
ASDA-A3
Revision December, 2017