ST300 Series | E12, what does this message mean, and what can be done?

If the error message E12 appears on the frequency converter display, it indicates an inverter overload.

Causes:
The acceleration ramp is too steep.
The inverter is restarted while the motor is still rotating.
The mains voltage is too low.
The load is too large, or the inverter power is too low.

Solutions:
Increase the acceleration time P00.11.
Avoid restarting immediately after stop in Free Stop mode.
Check the mains voltage.
Reduce the load or select an inverter with higher power.

If none of these causes apply, please contact technical support.

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