Motor underload

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The motor underload protection has tripped, meaning the motor is drawing significantly less current than expected for its operation. This can indicate mechanical issues such as broken belts, disconnected couplings, or a process issue like a dry pump in fluid applications.

• Motor current consistently below expected minimum.
• Low load or no load conditions (P1-08 < P1-09).
• Motor not connected properly.
• Faulty motor or winding.
• Incorrect current sensing parameters.

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1. 1

   Check the motor and the connected load for any mechanical failures, such as broken belts, shear pins, or damaged impellers.

2. 2

   In pumping applications, verify that the pump has sufficient fluid and is not running dry.