What is the LSo fault code and how do I fix it?
LSo stands for Low Speed Motor Step-Out and is detected when the drive detects step-out while running at low speed. Possible causes include an incorrectly set motor code, a load that is too heavy, or the drive incorrectly detecting the motor magnetic pole position. Solutions include setting E5-01 correctly, decreasing the load, setting b3-01 = 1 to enable Speed Search at Start, or performing High Frequency Injection Auto-Tuning for IPM motors. Do a Fault Reset to clear the fault after resolving the root cause. (Page 2)
From the official Yaskawa Ga800 Variable Speed Drive manual, page 2
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