I have an application where I don't need fine resolution. Having done my sums it appears I'm going to be running my (200steps/rev) motors in the range 0 to 2 revs/sec so 0-400 fsps.

I understand how torque is inversly proportional to speed, but looking at the torque curves I notice that they only start at around 500 fsps - is there anything "funny" I should be aware of going on at the front of the curve i.e. when running motors slowly?

If it makes any odds I'll be using microstepping drivers.

Thanks

Ian