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Fanuc Spindle Amplifier Alarm A4

FANUC Alarm Codes >> FANUC Spindle Amplifier Alarms >> Spindle Amplifier Alarm A4

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FANUC Spindle Amplifier Alarm A4

Models AffectedDescriptionTroubleshooting

Fanuc 6072, 6078, 6082, 6088, 6102 amps

A parity error was detected in the SRAM on the SPM control printed circuit board.
    1. If an alarm is issued when the power to the PSM is turned on
      1. The ROM is not installed correctly, no ROM is installed, or the ROM specification is incorrect. If the ROM on the SPM control printed circuit board is once replaced, check the following:
        1. Installation direction
        2. Occurrence of a bent lead and so forth
        3. Matching of the ROM series with the unit. Check subsection 2.2.3 of part I.
      2. Printed circuit board failure.
        1. Replace the SPM or SPM control printed circuit board.
    2. If an alarm is issued during motor activation
      1. Influence of noise
        1. Referring to Chapter 5, "Installation", of "FANUC SERVO AMPLIPHER a series Descriptions (B-65162E)," check the GND-related wiring.

 

Relevant 6078 model digital spindle amplifiers with the A4 alarm:

Relevant 6082 model digital spindle amplifiers with the A3 alarm:

Relevant 6088 model digital spindle amplifiers with the A3 alarm:

Relevant 6102 model digital spindle amplifiers with the A3 alarm:


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How Tri Star CNC Can Help with FANUC Alarm Code A4

Our servo error experts at Tri Star CNC can help you troubleshoot and provide solutions for your FANUC servo amp alarms. We offer FREE phone support with REAL humans, call 815-578-9145 and we’ll walk through the servo issue with you. If you need on-site support you can check out our field service network to find a service provider near you.

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