Use power resistors in series with a higher voltage supply. For 26V operation, drive directly. For 12V operation, you need no resistors (since 26 Ohms limits current to 0.46A on 12V – safe but low torque).
Like all hybrid steppers, the torque of the BJ42D15-26V10 decreases as RPM increases. To maximize high-speed performance, it is recommended to use a higher input voltage to the driver (e.g., 12V or 24V), as this helps overcome the motor's back EMF. bj42d15 26v10 stepper motor datasheet
| Parameter | Value | |------------------------|---------------------------| | Temperature rise | 80°C max (rated current) | | Ambient temperature | –20°C to +50°C | | Storage temperature | –25°C to +70°C | | IP rating | IP30 (open frame) | Use power resistors in series with a higher voltage supply