J
jerry
Guest
I'm looking for a stepper driver to build into a small home built cnc
system. Want to drive bipolar parallel with motor current control and at
least to quarter step capability. Allegro et al have some nice stuff (and
Samples!) up to 3A and 50v, but is there anything else able to carry
greater than 3A?
Many cheaper surplus Stepper motors in the 200oz range are available in
nema23 or nema34 but rated 5-6A or greater at 2v. Outside the commonly
available drivers. I want to build something to drive these motors at ->6A
and current limiting at 65v. Building it is the exercise, not necessarily
buying something off the shelf, like Gecko's - good as they are.
Alternatively I thought of putting mosfets after the driver to carry the
power but would lose current limiting and I have some concerns about
response at the frequencies qtrstepping and the velocities require. Simply
put ( for my use only...) looking to step at around 25ksteps per second per
axis.
tia
system. Want to drive bipolar parallel with motor current control and at
least to quarter step capability. Allegro et al have some nice stuff (and
Samples!) up to 3A and 50v, but is there anything else able to carry
greater than 3A?
Many cheaper surplus Stepper motors in the 200oz range are available in
nema23 or nema34 but rated 5-6A or greater at 2v. Outside the commonly
available drivers. I want to build something to drive these motors at ->6A
and current limiting at 65v. Building it is the exercise, not necessarily
buying something off the shelf, like Gecko's - good as they are.
Alternatively I thought of putting mosfets after the driver to carry the
power but would lose current limiting and I have some concerns about
response at the frequencies qtrstepping and the velocities require. Simply
put ( for my use only...) looking to step at around 25ksteps per second per
axis.
tia