Overcurrent

What does Overcurrent mean?

The ACS880 drive's output current exceeded its maximum permissible level. This can lead to motor and drive overheating, potential damage to components, and unexpected system shutdowns.

• Mechanical binding or obstruction in the driven machinery causing an excessive motor load.
• Short circuit or ground fault in the motor windings or motor power cables.
• Incorrect motor parameters (e.g., 99.06 Motor nominal current, 99.07 Motor nominal speed) configured in the drive.
• Rapid acceleration or deceleration with insufficient ramp times (parameters in group 22 Ramps) for the connected load inertia.
• Over-sized motor for the application, causing the drive to struggle with control.

Click steps to track your progress.

1. 1

   Check for any mechanical binding, blockage, or excessive load on the driven machine that could cause the motor to draw high current.

2. 2

   Verify all motor nameplate data (current, voltage, speed, power) against the parameters configured in group 99 (Motor data) of the drive.

3. 3

   Inspect motor cables and motor windings for short circuits or ground faults using appropriate insulation resistance and continuity tests.

4. 4

   If occurring during transients, increase acceleration and deceleration ramp times (e.g., 22.01 Acc/Dec ramp set) to reduce current peaks.

5. 5

   Measure the motor phase currents during operation and compare them to the motor nominal current (99.06) to identify steady-state overload.