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Troubleshooting

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ASDA-A3

14

AL400 Roaty axis position setting error

Trigger condition

and cause

Condition: the position offset of the motor in 1 ms exceeds the setting of P2.052

(Rotary axis position scale).

Cause: the value of P2.052 is set too small.

Checking method

and corrective action

Check if P2.052 is set according to the specifications in the manual.

How to clear the

alarm?

DI.ARST

AL401 NMT reset command is received when servo is on

Trigger condition

and cause

NMT reset command is received when the servo is on.

Checking method Check if the NMT reset command is received when the servo is on.

and corrective action Use NMT: reset node or OD 6040h [Bit 7] (Fault reset).

How to clear the

alarm?

DI.ARST

AL404 PR special filter setting value is too great

Trigger condition

and cause

Condition: the value of the PR command special filter (P1.022) is set too great

causing the following error of the internal position to exceed the allowable range.

Cause: the following error of the internal position exceeds the allowable range.

Checking method Check the setting of P1.022. If the value is too great, the following error exceeds

and corrective action the allowable range in a short time. Adjust the value of P1.022.

How to clear the

alarm?

DI.ARST

AL422 Write-in failed caused by power supply cut-off

Condition: if P2.069.Z is set to 1 (enabling the function of preventing the rotary axis

position from being lost when overflow occurs) and the power supply is cut off, the

motor fails to store the current position.

Cause:

Trigger condition 1. The load is over the rated range and the servo drive is in a continuous

and cause

overload condition.

2. After firmware update, the internal variables vary from versions.

3. The servo drive hardware EEPROM is abnormal.

4. The hardware of the servo drive is short-circuited.

5. AL520 occurred and causes malfunction of the servo drive.

1. Set P0.002 to 12 for monitoring if the average load rate [%] is continuously

Checking method

and corrective action

over 100%. If so, increase the motor capacity or reduce the load. Refer to

Appendix A for Graph of load and operating time.

14-68

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