Angle Error

What does ASF mean?

A fault related to an incorrect angle setting, which can impact precise motor control and synchronization. This typically indicates an issue with the feedback device or its configuration.

• Incorrect encoder offset angle (e.g., Parameter P7-31) after mechanical adjustment, encoder replacement, or motor change.
• Encoder feedback signal noise due to insufficient shielding, poor grounding (e.g., on cable X1-A, X1-B), or ground loop issues.
• Damaged encoder disk, broken sensor, or loose mounting causing inconsistent pulse generation or signal loss.
• Motor phase sequence mismatch with drive output, leading to incorrect commutation angle detection by the control algorithm.
• Excessive mechanical play, backlash, or slippage in the motor shaft-encoder coupling assembly.

Click steps to track your progress.

1. 1

   1. Perform a static autotune (e.g., set Parameter P0-01 = 1) to recalibrate motor parameters and encoder angle offset.

2. 2

   2. Verify encoder cable connections (e.g., terminals X1/X2, pins A+, A-, B+, B-, Z+, Z-, GND) for secure fit and proper shielding.

3. 3

   3. Measure encoder power supply voltage (e.g., 5VDC or 24VDC) at the encoder terminals to ensure it is within specified range.

4. 4

   4. Inspect the encoder for physical damage, contamination, or loose mounting bolts on the motor shaft.

5. 5

   5. Manually rotate motor shaft to confirm encoder pulses are generated correctly using an oscilloscope on signal lines A and B.