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ASDA-A3

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Troubleshooting

AL3E2 Communication synchronization signal is sent too soon

Trigger condition

and cause

Condition: the synchronization signal is received too early.

Cause: the communication synchronization signal is sent too soon.

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

to that of the controller.

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

and corrective action

A3-F models.)

3. Ensure the correct time sequence of sending packets from the controller.

A drift or delay in packet sending time causes synchronization failure.

How to clear the

alarm?

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

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AL3E3 Communication synchronization signal timeout

Trigger condition The target command is not received within a continuous communication cycle in IP

and cause

mode (except the CANopen B mode).

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

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

to that of the controller.

Checking method 3. Modify the synchronization error range setting (P3.009.U). (For A3-M and

and corrective action

A3-F models.)

4. Modify the setting of IP command timeout (P3.022.YX). (For A3-E models.)

5. Ensure the correct time sequence of sending packets from the controller.

A drift or delay in packet sending time causes synchronization failure.

How to clear the

alarm?

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

AL3F1 Absolute position command of the communication type servo drive is in error

Trigger condition

and cause

Condition: when the bus communication type (CANopen, DMCNET, and

EtherCAT) servo drive is in combination with an incremental motor and the position

overflow occurs with the absolute origin position not established, the absolute

positioning command is issued.

Cause:

1. The absolute origin position is not established.

2. Overflow occurs since the motor keeps rotating in the same direction.

Checking method

and corrective action

Establish the absolute origin position.

How to clear the

alarm?

Establish the absolute origin position.

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