ST600 | Err.76, what does this message mean and what can be done?

If the error message Err.76 appears on the display of the frequency inverter, it indicates an undervoltage at analog input AI3.

Causes:

• The input voltage at AI3 is too low.
• Nothing is connected to AI3.

Solutions:

• Check the wiring of AI3.
• Connect AI3 directly to the +10V source for verification.
• Check parameter P08.61.

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

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