Rated current 1,5A, 2 Phase, 4-Wire Stepping Motor for 3D Printer
Rated current 1,5A, 2 Phase, 4-Wire Stepping Motor for 3D Printer
This is the maximum current you may pass through both windings at the same time. The maximum current through one winding (which is what really matters when using microstepping) is rarely quoted and will be a little higher. However, even with one winding driven at the quoted rated current, the motor will get very hot. So the usual practice is to set the motor current to no more than about 85% of the rated current. Therefore, to get maximum torque out of your motors without overheating them, you should choose motors with a current rating no more than 25% higher than the recommended maximum stepper driver current. This gives:
- Duet 0.6 and Duet 0.8.5 (recommended maximum motor current 1.5A RMS) => Stepper motor rated current <= 1.9A
- Duet 2 WiFi and Duet 2 Ethernet (maximum motor current 2.4A RMS) => Stepper motor rated current <= 3.0A
- Duet 2 Maestro (recommended maximum motor current 1.4A RMS with good fan cooling) => Stepper motor rated current <= 1.7A. Hower, if you use motors with lower rated current (e.g. 1.0 to 1.2A) and 24V power, then the drivers will run cooler.
- Duet 3 Mainboard 6HC and Expansion board 3HC (recommended maximum motor current 4.45A RMS) => Stepper motor rated current <= 5.5A
- Duet 3 Tooboard (recommended maximum motor current 1.4A RMS) => Stepper motor rated current <= 1.75A
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