oL4
Overtorque Detection 2
Yaskawa · V1000 AC Drive
What does oL4 mean?
This fault triggers when the drive's output current surpasses the level set in L6-05 for longer than the time specified in L6-06. Similar to oL3, it points to a machine issue, such as a locked rotor or improperly set load parameters. Persistent overtorque can lead to mechanical strain, premature equipment wear, or even motor damage.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Execute a Fault Reset to clear the fault from the drive's memory after troubleshooting.
Source: Yaskawa V1000 AC Drive
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