Delta ASDA-A3 Series User Manual page 762

ASDA-A3
AL025 Encoder internal error
Checking method
and corrective
action
How to clear the
alarm?
AL026 Encoder unreliable internal data
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
AL027 Encoder internal reset error
Trigger condition
and cause
Checking method
and corrective action
How to clear the
alarm?
(b) Check if the connection for the encoder signal cable is normal.
Make sure the encoder signal cable is separated from the power supply
or any high-current cables to avoid interference.
Use shielded cable for the encoder.
(c)
Make sure the motor shaft does not move when power is turned on.
2.
Cycle power on the servo drive.
Condition: internal data error occurs three consecutive times.
Cause:
External interference.
1.
Malfunction of the encoder hardware.
2.
To correct the interference, check the following descriptions:
1. Make sure the servo motor is properly grounded and connect the ground of the
UVW connector (green) to the servo drive heat sink.
2. Check if the connection for the encoder signal cable is normal. Make sure the
encoder signal cable is separated from the power supply or any high-current
cables to avoid interference.
3. Use shielded cable for the encoder.
4. Set P0.002 to -80 by using the panel to monitor the communication error status. If
the value is greater than 0 and the value increases continuously, check steps 1 -
3 again. If the value is 0, send your motor back to the distributor or contact Delta.
Cycle power on the servo drive.
Condition: encoder reset error.
Cause: encoder reset.
1. Check if the encoder signal cable is firmly connected.
2. Check if the power supply for the encoder is stable and make sure to use
shielded cable.
3. Check if the operation temperature is over 95°C. Identify the cause for the high
temperature and do not restart the operation before the temperature falls back
into the allowable range.
If the issue persists, send your servo drive back to the distributor or contact Delta.
Cycle power on the servo drive.
Troubleshooting
13
13-17