Underload Min Alarm Trip

What does Min Alarm mean?

This fault indicates that the motor load has dropped below a predefined minimum threshold, typically signaling an underload condition. This can occur if a belt breaks, a pump runs dry, a conveyor jams causing a sudden load drop, or other process failures. It protects the driven equipment from damage caused by low-load or no-load operation (e.g., pump cavitation). Ignoring this can lead to equipment damage or process inefficiency.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the process to identify why the load has decreased unexpectedly.

2. 4

   Ensure the motor is properly coupled to the load and there are no slipping mechanisms.