What are their limitations?

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What are their limitations?

Post by Admin on Sun Oct 15, 2017 10:41 pm

Low Efficiency – Unlike DC motors, stepper motor current consumption is independent of load. They draw the most current when they are doing no work at all. Because of this, they tend to run hot.
Limited High Speed Torque - In general, stepper motors have less torque at high speeds than at low speeds. Some steppers are optimized for better high-speed performance, but they need to be paired with an appropriate driver to achieve that performance.
No Feedback – Unlike servo motors, most steppers do not have integral feedback for position. Although great precision can be achieved running ‘open loop’. Limit switches or ‘home’ detectors are typically required for safety and/or to establish a reference position.

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Re: What are their limitations?

Post by dominic_catacutan on Sun Oct 15, 2017 11:02 pm

In a two phase bipolar stepper motor, how many field coils are placed?


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Re: What are their limitations?

Post by Admin on Tue Oct 17, 2017 8:47 pm

the field coils are only 4 Surprised


Last edited by Admin on Wed Oct 18, 2017 1:50 pm; edited 1 time in total

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Re: What are their limitations?

Post by KathrynB on Wed Oct 18, 2017 1:40 pm

Why the stepper motor has a limitation? Question

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Re: What are their limitations?

Post by Admin on Wed Oct 18, 2017 1:54 pm

the reason why stepper motor has a limitation because of it low efficiency unlike in a servo and also it has a limited high speed torque and the last reason is it no feedback unlike in a servo Smile

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Re: What are their limitations?

Post by Cin on Thu Oct 19, 2017 12:54 am

good day sir what are the maximum torque?

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Re: What are their limitations?

Post by Admin on Thu Oct 19, 2017 9:22 am

Cin the maximum torque is the "holding torque"

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Re: What are their limitations?

Post by KathrynB on Thu Oct 19, 2017 9:29 am

Admin wrote:the reason why stepper motor has a limitation because of it low efficiency unlike in a servo and also it has a limited high speed torque and the last reason is it no feedback unlike in a servo Smile

ohhhh. I see, thanks for the info Smile

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Re: What are their limitations?

Post by Admin on Thu Oct 19, 2017 9:38 am

welcome kathrynB Smile

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Re: What are their limitations?

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