Timeline for Understanding stepper motor current draw
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| Jun 20, 2023 at 14:52 | comment | added | John Birckhead | How much torque to you want to produce? How fast to you want to go? What is your load inertia? This will determine your current requirements. Your data sheet provides a temperature rise "MOTOR STANDSTILL;FOR 2PHASE ENERGIZED". Your resistance per phase is 1.13, so 7 watts. So stay under an average of 2.8 amps RMS per phase. The RMS current in the coil will not be your PSU current however. You need your losses to be less than 7 watts, so subtract your mechanical power out from your power in and stay under 7. | |
| Jun 20, 2023 at 14:27 | comment | added | SheerKahn | To answer my question of 'calculating a number in confidence'. Assuming correct limits are set on the driver. The current should not exceed the current/phase*1.4 ? | |
| Jun 20, 2023 at 13:52 | history | answered | John Birckhead | CC BY-SA 4.0 |