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Troubleshooting

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ASDA-A3

14

AL018 OA and OB output error

Condition: the output frequency of the OA and OB pulses is higher than the

maximum output frequency of the hardware.

Trigger condition

and cause

Cause:

1. The resolution of the OA and OB pulses is set too high.

2. There is interference or cable damage causing communication error.

3. Encoder error.

1. The settings of P1.076 and P1.046 should follow these requirements:

P1.076 > motor speed and Motor speed ×P1.046×4<19.8×106

60

2. Check the communication error rate by setting P0.002 to -80. If this value

increases continuously, it means there is interference. Check the following

items:

(a) Check if the motor is properly grounded. Make sure the ground end

(green) of the power cable is grounded to the servo drive heat sink.

Checking method

and corrective action

(b) Check if the connection for the encoder signal cable is normal.

Make sure the encoder signal cable is separated from the power supply

or any high-current cables to avoid interference.

(c) Use shielded cable for the encoder cable. Pull out the wire mesh and

have it correctly grounded.

3. Check the fault record (P4.000 - P4.004) and see if an alarm has occurred

(AL011, AL024, AL025, or AL026). Use the checking methods and corrective

actions to clear the alarm if any of them occurs.

4. If you do not need to use the OA and OB pulses, set P2.065 [Bit 13] to 1 to

disable the detection function for OA and OB output error (AL018 / AL048).

How to clear the

alarm?

1. DI.ARST

2. Contact the distributor.

14-18

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