ou3

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ou3 fault in drive indicates Over voltage in constant speed comes when the inverter's internal main circuit DC voltage to reach or exceed the specified value.

Cause :  

Over voltage in constant speed comes when the inverter's internal main circuit DC voltage to reach or exceed the specified value.

Solutions: 

  1. The protection circuit is activated to stop the inverter output.
  2. The circuit may also be activated by a surge voltage produced in the power supply system.
  3. Power supply abnormal.
  4. Check the input power source.
  5. Large load inertia.
  6. Add suitable braking devices.

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