Delta ASDA-A3 Series User Manual page 1169

Troubleshooting
AL028 Battery voltage error or encoder internal error
14
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL029 Gray code error
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL02A Number of revolutions of the encoder is in error
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
14-22
Condition: battery voltage is higher than the specification (> 3.8V) or the encoder
signal is in error.
Cause:
Voltage level of the battery is too high.
1.
Encoder internal error.
2.
Check if there is a charging circuit. Avoid incorrect wiring. If Pin 1 (5V) of CN2
1.
is connected to BAT+ of the encoder connector, it means the power (5V) of the
servo drive is being charged to the battery.
Check if the battery is correctly installed (voltage > 3.8V).
2.
Check if the motor is properly grounded. Make sure the ground end (green) of
3.
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
4.
encoder signal cable is separated from the power supply or any high-current
cables to avoid interference.
Use shielded cable for the encoder. Pull out the wire mesh and have it
5.
correctly grounded.
If the issue persists, send your servo drive and motor back to the distributor or
contact Delta.
Cycle power on the servo drive.
Absolute position within a single revolution is in error.
Cycle power on the servo drive to operate the motor. Then, check if the alarm
occurs again. If the issue persists, replace the encoder.
Cycle power on the servo drive.
Condition: the number of revolutions of the encoder is in error.
Cause: the internal signal of the encoder is abnormal causing error in the number
of revolutions.
Send your servo motor back to the distributor or contact Delta.
N/A
ASDA-A3