2026-01-15 11:03 PM
Hi,
Currently I am evaluating HSO [High Sensitivity Observer (Sensorless)] in our custom Inverter board () with B-MOTOR-PMSMA1 motor. But when I start the motor it jerks and giving Over Current SW Fault.
Our custom board has following key components.
The same inverter board with B-MOTOR-PMSMA1 motor is working for Observer + PLL configuration.
I suspect that this board is having current sensor with ± 37.5 A measurement range designed for higher wattage motor giving fluctuation/slow response for B-MOTOR-PMSMA1 motor with 2.8A current rating.
Please help me to identify root cause of update project configuration to make it run with B-MOTOR-PMSMA1.
Attached following items for your reference.
Our end goal is to run Higher watt motor with our custom board. But first we need to understand HSO before and its tuning with smaller motor.