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ST130 | Error E.oC3 – What does it mean and what can be done?

If the error message E.oC3 appears on the ST130 inverter display, it indicates an overcurrent fault during constant speed operation of the connected motor.

Possible cause

Possible solution

Sudden increase in motor load

Avoid abrupt load changes

Supply voltage too low

Check mains connection

Missing or incorrect motor parameters

Enter correct motor parameters

Phase loss at inverter output

Check output wiring

Undersized inverter

Select a

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