ST600s | Err.07, what does this message mean, what can be done?

If the display of the frequency inverter shows the error message Err.07 appears, it is overvoltage during acceleration.

Causes:

  • A fault has occurred in the input voltage.
  • Strong energy feedback.
  • Missing brake units.
  • The dynamic brake is not activated.

Solutions:

  • Check the input power.
  • Check whether the acceleration time P00.11 is too short or whether the motor starts when turning.
  • Build in dynamic braking units.
  • Check the setting of the corresponding function codes P08.37 and P08.38.

If none of these error sources apply, please contact technical support.

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