A55
Alarm code A55 means .
Cause analysis: 1. External interference; 2. Motor damage; 3. Encoder cable damage; 4. Drive damage.
Remedy:
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The PE conductor of the robot power cable must be safely and reliably grounded;
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Check the encoder cable for damage that reduces interference immunity;
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Fit a ferrite ring around the encoder cable to improve interference immunity; Estun Robot Fault Analysis and Remedies
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Swap drives to determine whether the problem lies in the drive or motor.
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Try bringing a wire out from the encoder cable shield and connecting it to the motor body