Re: need help compiling EMC

["Peter Cook" <kf2qd-at-terraworld.net>]

You have to think of the circuit driveing the stepper more like a PWM
circuit the waty it is set up - you are turning on and offt he phases so
fast that you never get full power. If you used a power supply that could
supply 2A at say - 90 volts and let the current be limited instead of the
voltage you would get much more torque out of the motor - the windings in
the motor are inductors and they resist the change in current flow - thus
limiting the maximum current that can change the magnetic fields - by using
a higher voltage (though current limitted) supply you can get much higher
performance out of a stepper motor.

Pete

>
> am using steppermod....and i configured the ini file for 1
> inch/second2...max acceleration, 0.5 inch/second2....is there a certain
> procedure to determine all of these variables...i mean the acceleration
and
> the velocity....when the motor starts to run ...the current will drop to
1.5
> A...the power supp;y can provide 2 A....the voltage is 3.2 V across the
> windings...and even with that current...i can easily stop the motor by
> holding the shaft with my fingers in the data sheet for the motor...it
says
> that the motor can provide 2 N.m torque.
>
> regards
> hassan
>
>
>