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.

Tags: