UL5

Mechanical Weakening Detection 2

Yaskawa · GA500 Maintenance and Troubleshooting

What does UL5 mean?

This error is generated when the drive detects an undertorque condition that satisfies the criteria for mechanical weakening, as configured by the L6-08 [Mechanical Fatigue Detect Select] parameter. This suggests potential wear, damage, or loosening of mechanical components within the system. Unresolved mechanical weakening can lead to catastrophic equipment failure.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Perform a Fault Reset to clear the error after necessary repairs are completed.

Source: Yaskawa GA500 Maintenance and Troubleshooting
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