Chapter 10 Troubleshooting
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ASDA-A&A+ Series
Revision April 2009
10-5
: Watch dog execution time out
Potential Cause
Checking Method
Corrective Actions
Watch dog execution
error.
Check and reset the power supply.
If there are any abnormal
conditions after resetting the power
supply, please contact your
distributor for assistance or contact
with Delta.
: Encoder error (Position detector fault)
Potential Cause
Checking Method
Corrective Actions
The wiring of encoder is
in error.
1. Check if all wiring is correct.
2. Check if the users conduct the wiring by
the wiring information in the user manual.
Ensure all wiring is correct.
Encoder is loose
Examine the encoder connector.
Install the motor again.
The wiring of encoder is
defective.
Check if all connections are tight.
Conduct the wiring again.
Encoder is damage
Check the motor for the damage.
Repair or replace the motor.
The circuit (loop) of
Encoder is in error.
Check the drive for the damage.
Repair or replace the drive.
: Adjustment error
Potential Cause
Checking Method
Corrective Actions
The setting value of
drift adjustment has
exceeded its maximum
allowable value.
1. Remove
CN1
wiring.
2. Execute the drift adjustment again. (Set
P2-08 to 20 first, and then set P4-10 to 5.)
If the error does not clear after
executing the drift adjustment
again, please contact your
distributor for assistance or contact
with Delta.
: Emergency stop activated
Potential Cause
Checking Method
Corrective Actions
Emergency stop switch
is activated.
Check if emergency stop switch is On or Off. Activate emergency stop switch.
: Reverse (CWL) limit switch error
Potential Cause
Checking Method
Corrective Actions
Reverse limit switch is
activated.
Check if reverse limit switch is On or Off.
Activate reverse limit switch.
Servo system is not
stable.
Check the value of control parameter setting
and load inertia.
Modify parameter setting and re-
estimate motor capacity.
Call 1(800)985-6929 for Sales
deltaacdrives.com
Call 1(800)985-6929 for Sales
deltaacdrives.com