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.

  1. 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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