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FANUC Servo Amplifier Alarm 04, 4

FANUC Alarm Codes >> FANUC Servo Amplifier Alarms >> Servo Amplifier Alarm 04, 4

Disclaimer: Attempting repairs yourself can be dangerous and can void your warranty. Contact us for support.

FANUC Servo Amplifier Alarm Codes 04, 4

ModelDescriptionRemedy

Fanuc Alpha Power Supply Alarms (6077, 6087)

ai B Power Supply Alarms (6200, 6202)

Fanuc Alpha i Power Supply Alarms (6110, 6115, 6140)

DC voltage (DC link) has dropped.

  1. Check the DC voltage of the main circuit power supply for abnormally low levels.
  2. Inspect if the circuit breaker is tripped.
  3. Contact Tri Star for further support.

C Series Fanuc Servo Amplifer Alarms (6066)

Fanuc Servo Amplifer Alarms (6089)

Fanuc Servo Amplifer Alarms (6090)

Regenerative discharge energy is too high. The regenerative discharge circuit is abnormal.

  1. Check the regenerative discharge circuit for abnormalities.
  2. Contact Tri Star for further support.

Beta Fanuc Servo Amplifer Alarms (6093)

Servo motor has overheated (estimated value).

  1. Check the motor for signs of overheating, such as excessive heat or burning smells.
  2. Allow the motor to cool down completely before attempting to restart.
  3. Inspect the motor cooling system, including fans and coolant levels, for proper operation.
  4. Ensure that the motor load is within the specified limits and that there are no mechanical issues causing excessive strain.
  5. Contact Tri Star for further support.

Fanuc Alpha i Power Supply Alarms (6110, 6115, 6140)

The temperature of the heat sink has risen.

  1. Check the heat sink for any obstructions blocking airflow or causing overheating.
  2. Inspect the cooling fan attached to the heat sink to ensure it is functioning properly.
  3. Clean the heat sink and cooling fan to remove any dust or debris that may be impeding airflow.
  4. Allow the heat sink to cool down completely before attempting to restart the system.
  5. Contact Tri Star for further support.

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Relevant 6077, 6087 digital servo amplifiers to the 04, 4 alarm:

Relevant 6200, 6202 digital servo amplifiers to the 04, 4 alarm:

Relevant 6110, 6115, 6140 digital servo amplifiers to the 04, 4 alarm:

Relevant 6066 digital servo amplifiers to the 04, 4 alarm:

Relevant 6089 digital servo amplifiers to the 04, 4 alarm:

Relevant 6090 digital servo amplifiers to the 04, 4 alarm:

Relevant 6093 digital servo amplifiers to the 04, 4 alarm:


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Give Tri Star CNC a call and we’ll help you determine the source of the FANUC error and find solutions ASAP. We offer FREE phone support (call 815-578-9145 now), competitive repair pricing, or quick turnaround on a replacement component from our exchange stock if necessary. If you need on-site support we can point you in the right direction through our field service network.

1-year warranty on FANUC CNC parts exchangeFANUC-GE Parts Exchange & Repair Warranty Information

Exchange FANUC parts and repaired parts include a 1-year warranty. Tri Star CNC, LLC warrants the COMPLETE ASSEMBLY REPAIR – not just the parts and labor.

Get more details on our FANUC warranty and please contact us for further CNC machine support.

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