Yaskawa servo drive maintenance alarm C90, AC9 fault handling method

Create Date: 2024-8-30 12:03:23|Source: YASKAWA/Yaskawa

1. Analysis of the causes of Yaskawa servo alarm C90 (AC9):

1. The encoder cable is broken or the encoder plug is made in poor process (there are also wiring errors in the alarm of the new machine);

2. The servo drive itself is faulty;

3. Environmental interference, caused by poor connection: such as high-power high-frequency interference equipment (pressur, inverter) in the working environment

4. The feedback unit of the servo motor encoder is faulty.

Second, the corresponding solution:

1. Check whether the encoder cable is good, and carefully check whether the plug, soldering point and cable bow and foot arrangement of the encoder are normal;

2. If you don't find the problem of wires and plugs, and then rule out the interference problem of the encoder cable, please separate the coding cable from other wires (power cables);

3. The interference problem of the line is good and solved, replace a new encoder line to try, no alarm appears after the replacement, and the follow-up needs to be tracked for 1-2 days;

4. If the encoder line alarm is replaced, then replace the motor - a power on to try it, the alarm will be eliminated after the replacement, and the faulty motor will be taken to the maintenance center for testing;

5. If the alarm cannot be eliminated after replacing the motor, then take the driver to detect.
Yaskawa servo drive maintenance alarm C90, AC9 fault handling method

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