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Troubleshooting

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ASDA-A3

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AL285 Software negative limit

Trigger condition

and cause

Condition: the feedback position exceeds the software negative limit.

Cause: the software negative limit is triggered.

Checking method

and corrective action

Software negative limit triggering is determined by the feedback position. Set an

appropriate deceleration time to achieve the desired effect. For more information,

refer to the description of P5.003.

How to clear the

alarm?

The alarm is automatically cleared after the motor moves away from the limit.

AL289 Position counter overflows

Trigger condition

and cause

Position counter overflows.

1. Set the gear ratio according to the actual application requirements and the

total traveling distance of the absolute motor to avoid overflow of the feedback

Checking method

counter.

and corrective action 2. If P2.069.Z is set to 1 (enabling the function of preventing the rotary axis

position from being lost when overflow occurs), set P2.070 [Bit 2] to 1 (no

overflow warning).

How to clear the

alarm?

DI.ARST

AL301 CANopen synchronization failure

Trigger condition

and cause

Condition: the synchronization with the controller fails when you use the CANopen

IP mode (B mode).

Cause: communication fails to synchronize.

1. Make sure the communication between the servo drive and controller is good.

Checking method 2. After eliminating any problems that you find, allow the controller to re-send the

and corrective action

synchronization signal and ensure that it is sent successfully.

How to clear the

alarm?

3. Modify the setting for P3.009 (the default value is suggested).

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

AL302 Synchronization signal of CANopen is sent too soon

Trigger condition

and cause

Condition: the synchronization signal is received too early when you use the

CANopen IP mode (B mode).

Cause: the synchronization signal of CANopen is sent too soon.

1. Make sure the setting of communication cycle period (OD 1006h) is identical

Checking method

to that of the controller.

and corrective action 2. Modify the synchronization error range setting (P3.009.U). (For A3-M and

A3-F models.)

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