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Fanuc PSM Alarm H - Power Supply Alarms

FANUC Alarm Codes >> FANUC Power Supply Alarms >> PSM Alarm H

FANUC Spindle Amplifier Alarm Codes A, A0

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

Models AffectedDescriptionTroubleshooting

For the PSM-5.5 to PSM-11

The temperature of the regenerative resistor has arisen abnormally.

  1. Regenerative resistance not detected
    1. Check the wiring for regenerative resistance
  2. Insufficient regenerative resistance
    1. Review the specification for the regenerative resistance
  3. Excessive regenerative power
    1. Reduce the frequency at which acceleration/deceleration occurs
  4. Regenerative resistor cooling fan stopped
    1. Check to see if the regenerative resistor cooling fan has stopped
  5. Contact Tristar for further support.

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Contact Tri Star CNC Services


Nationwide FANUC PSM Alarm H Troubleshooting, Repairs & Replacement Service

Give Tri Star CNC a call and we’ll help you determine the source of the FANUC Power Supply Alarm H 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.

FANUC Power Supply 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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