Delta ASDA-A3 Series User Manual page 519

Troubleshooting
How to clear the
11
alarm?
AL018 Abnormal encoder signal output
Trigger condition
and causes
Checking methods
and corrective
actions
How to clear the
alarm?
AL019 Serial communication error
Trigger condition
and causes
11-14
the distributor or Delta.
If this alarm occurs when the drive is started, please reset the parameters
and then cycle the power. If the alarm occurs during operation, please reset
the alarm.
Condition: output frequency of the encoder is higher than the rated output
frequency of the hardware.
Causes:
1. Pulse resolution of the encoder is set too high.
2. There is interference or cable damage causing communication error.
3. Encoder error.
1. The setting of P1.076 and P1.046 should follow these requirements:
P1.076 > motor speed and
Motor speed
× P1 −
60
2. Please check the communication error status by setting P0.002 to -80.
If the value continuously increases, it means there is interference. Please
check the following:
(A) Make sure the servo motor is properly grounded and connect the
UVW connector (color green) to the heat sink of the servo drive.
(B) Check if the connection of encoder signal cable is normal. Make
sure that you separate the encoder signal cable from the main
power circuit cable to avoid interference.
(C) Use shielded cable for the encoder.
3. Check the error log (P4.000—P4.005) and see if an alarm has occurred
(AL011, AL024, AL025, and AL026). Use the checking methods and
corrective actions to clear the alarm if any of them occurs.
1. DI.ARST
2. Please send the product to the distributor or Delta.
Condition: RS-485 communication error.
Causes:
1. Improper setting of the communication parameters.
2. Incorrect communication address.
3. Incorrect communication value.
46 × 4 < 19.8 × 10 6
ASDA-A3
Revision December, 2017