Inverter overloaded

What does 9 mean?

The drive has been subjected to a load exceeding 100% of its rated capacity for an extended period. This indicates that the motor or the application demands more power than the drive can safely provide without risking thermal damage to its power components.

• Mechanical overload on the motor, demanding continuous current significantly higher than its rated value.
• Incorrect motor data entered into drive parameters (e.g., P1-04 for motor rated current, P1-05 for motor rated power), leading to miscalculation of thermal model.
• Insufficient drive sizing for the application, where the drive's continuous current rating is lower than the required motor load.
• Very low motor speed operation (below 10Hz) without proper motor cooling, causing the drive to compensate by reducing output.
• Output current measurement (Parameter P0-03) consistently exceeding the drive's continuous rating (e.g., >1.0 x In for an extended period).

Click steps to track your progress.

1. 1

   Measure the actual current draw from the motor during operation using a clamp meter on one output phase (U, V, or W) and compare to motor nameplate.

2. 2

   Verify all motor nameplate data (P1-04, P1-05, P1-06) entered into the drive's parameters is accurate.

3. 3

   Check for mechanical binding, worn bearings, or excessive friction in the driven equipment causing increased motor load.

4. 4

   Confirm the drive's continuous current rating is appropriate for the application's maximum continuous load.

5. 5

   Increase acceleration/deceleration ramp times (P1-02, P1-03) to reduce peak currents during transients if the application allows.