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14-05-2026
How To Match Current Sensor Range With Motor Drive Requirements
Choosing the right current sensor range is critical for motor drive performance. If the sensor range is too small, the output may saturate during startup, acceleration, braking, overload, or fault conditions. If the range is too large, the system may lose measurement resolution during normal operation, reducing control accuracy and protection sensitivity. This guide explains how to match current sensor range with motor drive requirements, including rated current, peak current, overload current, phase current, DC bus current, response speed, accuracy, installation space, and output signal compatibility. It is written for engineers and procurement teams selecting current sensors for VFDs, servo drives, industrial motors, pumps, fans, compressors, CNC machines, robots, and power conversion equipment.
