Steppers do not consume more electrical power during rapid accel. The biggest draw is when sitting still between the time you stop sending pulses to the drive and the time it switches to reduced idle current, if it has that ability.
Once you size the power supply to the full load demands of the motors you have done the job. The gecko paper http://www.geckodrive.com/photos/Step_motor_basics.pdf has a good section on power supplies. HTH Rayh On Mon, 2008-07-21 at 08:27 -0400, Kenneth Lerman wrote: > Regarding power supplies: > > Computers use regulated power supplies because the electronics require a > voltage within a relatively narrow range. You don't need a regulated > supply to drive a stepper or servo (although you might for some of the > electronics connected to them). For that reason, the answer to the > question linear or switching is neither. > > Use a transformer, a diode bridge, and a capacitor. Add some fusing, > perhaps some inrush protection, and a bleeder across the capacitor. > > Ken > > Rafael Skodlar wrote: > > ...Snip... > > > > The reason I mentioned power supply is I'm not sure which way to go, > > linear or switching. While switching PSU is good for computers and > > electronics in general with almost constant power use, I'm not sure > > about driving stepper motors with large current surges during acceleration. > > > > ...Snip... > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
