Thread: Nema 23 4Nm Stepper Motor
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06-02-2013 #11
The encoder is 1000 line, this is 4000 PPR.
Typical ac servo motors have at least 2500 line encoders and that is 10000 PPR.
While there are incremental encoders with a higher resolution than 2500 line, they are not normally found in the back of an AC servo motors, and if a higher resolution is needed, then you would use a Sine / cosine encoder.
DC brushless servos are normally on the smaller size. (up to about 200W)
DC servo are normally brushed and are a thing of the past, but are still used on some applications.
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