No-Load Current Fault

What does Er - 05 mean?

During Auto-Tuning, this fault signifies that the process did not complete within the specified time or the measured no-load current was outside the expected range. This can be caused by incorrect motor data, wiring issues, or a connected load influencing the no-load measurement. An incorrect no-load current value will lead to suboptimal motor parameterization and control.

Complete Troubleshooting Guide

1. 1

   Re-verify all Auto-Tuning input data parameters (T1 group) for accuracy, particularly the motor's rated current and no-load current settings.

2. 2

   Inspect the motor wiring for proper connection, ensuring no external factors are influencing current measurements.

3. 3

   If the motor is connected to a mechanical load, disconnect it and re-attempt Auto-Tuning to ensure an accurate no-load current measurement.