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.
- 3
Perform a Fault Reset to clear the error after necessary repairs are completed.
Source: Yaskawa GA500 Maintenance and Troubleshooting
View Official PDF