Delta ASDA-A3 Series, User Manual, Page: 791 / 845

Troubleshooting ASDA-A3
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AL404 Value of PR special filter setting is too high
Trigger condition
and cause
Condition: the value of the PR special filter (P1.022) is set too high causing the
internal following error exceeding the allowable range.
Cause: the following error of the internal position exceeds the allowable range.
Checking method
and corrective action
Check the setting of P1.022. If the value is too high, the following error exceeds
the allowable range faster. Adjust the value of P1.022.
How to clear the
alarm?
DI.ARST
AL500 STO function is enabled
Trigger condition
and cause
Safe torque off function (STO) is enabled.
Checking method
and corrective action
Safe torque off function (STO) is enabled. Check why it is enabled.
How to clear the
alarm?
1.
Use DI.ARST or set P0.001 to 0 or 0x6040.Fault Reset.
2.
If not using STO, plug the short circuit device into CN10 or wiring to short
circuit the block. Follow the instructions in Section 3.10.5 for the STO wiring.
AL501 STO_A lost (signal loss or signal error)
Trigger condition
and cause
Loss of STO_A signal or STO_A and STO_B signals are not synchronized for more
than 1 second.
Checking method
and corrective
action
Make sure the wiring of STO_A is correct.
How to clear the
alarm?
Cycle power on the servo drive.
AL502 STO_B lost (signal loss or signal error)
Trigger condition
and cause
Loss of STO_B signal or STO_A and STO_B signals are not synchronized for
more than 1 second.
Checking method
and corrective action
Make sure the wiring of STO_B is correct.
How to clear the
alarm?
Cycle power on the servo drive.
AL503 STO self-diagnostic error
Trigger condition
and cause
An error occurs during STO self-diagnosis, which may be caused by an
abnormality in the STO circuit.
Checking method
and corrective action
N/A
How to clear the
alarm?
Contact the distributor.