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| Alarm Code | Problem | Likely Fix | | :--- | :--- | :--- | | | Encoder communication error | Check CN2 connector for bent pins; replace cable. | | AL.32 | Overcurrent | Test motor winding resistance between U-V, V-W, W-U (should be ~0.8 ohms). | | AL.51 | Overspeed | Reduce command pulse frequency or check feedback cable shield. | | AL.E9 | Main circuit undervoltage | Measure L1-L2 (should be >170V AC). | kuzu v0 120