Akn. No valid motor temperature received (A1, A2, A3, A4, A5 and A6)

  • Hello guys!

    I'm with a client of my company asking for support, he was a KUKA KRC4 Compact with a Agilus robot, he's randomly getting these messages:

    - Akn. No valid motor temperature received (A1, A2, A3, A4, A5 and A6) KSS26086
    - Akn. No heatsink temperature warning and error limit (A1, A2, A3, A4, A5, A6) KSS26126

    Do you guys have any idea of what could be done to make these errors stop appearing?

  • I would be more concerned about the Servo Parameter errors at the bottom.

    It's strange that they seem to be happening over the span of 10sec or so. An error cluster like this would normally happen all at once, in a mass cascade.

    If it were just the motors, I would suspect the RDC card. But the heatsink, AFAIK, is located in the KRC. I think there may be some intermittent communication failure between the motherboard and the power module.

  • Thank you for your response SkyeFire!

    I recommended my client my to clean up the KRC and check all cable as well connected, since the fault does not occur that often.

    If some else apper, I'll send it here, thank you once again.

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