Motor Speed Fault

What does Er - 11 mean?

Detected during rotational Auto-Tuning in vector control (A1-02=2 or 3), this fault indicates that the torque reference exceeded 100% during acceleration. This typically points to an issue with acceleration time, incorrect PG (encoder) pulse data, or an excessive mechanical load on the motor. Exceeding torque limits during tuning will lead to inaccurate motor parameterization and potentially inefficient operation.

Complete Troubleshooting Guide

1. 1

   Increase the acceleration time (C1-01) to reduce the required torque demand during the acceleration phase of Auto-Tuning.

2. 2

   Verify the accuracy of input data, specifically the number of PG pulses (F1-01) from the encoder and the number of motor poles (E2-04).

3. 3

   If the motor is connected to a mechanical load, disconnect it and attempt rotational Auto-Tuning again without the load.