Unfortunately, inductance is associated with the winding (since it is a large coil of wire). However, a stepper motor must change the current in its windings rapidly and will not always run in steady state. This is the voltage that produces 5 of current into the winding in steady state. The motor’s nameplate voltage is therefore listed as 2.5. An example motor shown above is rated for 5 (per winding), with a winding resistance of.
The voltage ‘rating’ of the motor is simply derived from the motor’s rated current and winding resistance. So where does the nameplate voltage ‘rating’ come from? The current rating on the nameplate is the winding current required to produce the rated torque output of the motor. Torque is generated proportionally to the winding current. The important value is the current rating. Stepper motors come with a nameplate current rating, winding resistance, output torque and voltage rating. How can the same motor be run at different voltages? How does the bus voltage impact the stepper motor’s performance? In fact, identical stepper motors can be (and commonly are) operated at greatly different voltages in different systems. Many motor drivers use widely varying bus voltages to operate stepper motors.
Stepper motor ‘voltage’ is an often confusing subject. Posted by TWPe-jpc on Janu7:57 pm | Leave a Comment
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