Re: ci700


simingx@...
 

The stepper motor drivers Onstep uses are "chopper" type, meaning they operate the motor in somewhat "constant current" mode.
So, the rated voltage of the motor is not significant for us, in fact the higher the supply voltage is in relation to the motor voltage, the better. Low inductance (from the low voltage / high current rating) lets us run the motor at higher speed as the supply is more able to "drive" the coils to change their magnetic polarity. 
In any case, the 1.68A motors will be better (as long as your motor drivers can handle them) as you can have higher slew rates. My mount does 2.9 deg/s into a 2400:1 reduction at 24V. 

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