The 23KM-C051-09V datasheet notes that this motor has high inductance (5.7 mH). Use a driver with a high PWM switching frequency (≥ 20 kHz) to avoid audible noise and excess heating. Also, enable " automatic current reduction " (half-current when idle) to reduce case temperature.
23KM-C051-09V high-torque hybrid stepper motor manufactured by Minebea (NMB) . This specific model is a frame size motor with a standard 1.8° step angle Core Specifications Based on the Minebea 23KM-C series documentation 23km-c051-09v datasheet
| Wire Color | Function | |------------|----------| | Red | Phase A+ | | Blue | Phase A– | | Green | Phase B+ | | Black | Phase B– | The 23KM-C051-09V datasheet notes that this motor has
| Manufacturer | Part Number | Notes | | :--- | :--- | :--- | | Moons' | MS23HS5P4100 | Slightly lower inductance | | Nippon Pulse | S21H5PM-L | Higher torque (3.2 N·m) | | OMC Stepper Online | 23HS45-5004S | 5.0A version | | Leadshine | 23HS45-5004 | Direct cross | 23km-c051-09v datasheet
Use a multimeter to measure coil resistance and inductance → infer current rating ( I = V / R ).