Motor underload

What does 17 mean?

The motor underload protection has tripped, indicating that the motor's current draw is significantly lower than expected given its operating conditions and commanded speed. This typically suggests a loss of mechanical load, a broken coupling, or an issue with the driven equipment. Running under severe underload can sometimes lead to inefficient operation or potential runaway conditions in certain applications.

• Motor is drawing significantly less current than expected for the operating conditions.
• Mechanical load is too light or absent.
• Incorrect motor parameters leading to under-estimation of required torque.
• Encoder feedback suggesting no load when one exists.
• Minimum torque setting too low.

Click steps to track your progress.

1. 1

   Inspect the mechanical load connected to the motor — confirm it is present and properly engaged with the motor shaft.

2. 2

   Check for any broken belts, damaged couplings, or other mechanical failures that would cause the motor to lose its intended load.

3. 3

   Verify the motor's current draw against the expected current for the application and the drive's underload threshold settings.