Bryan,
I wanted to point out something I found out about voltage.
I am running CamTronics board with the L298 driver, driving 23 frame motors at 90oz. I have a Power Supply that was feeding 38v into the steppers. Had a problem with missing steps on my y axis. I
decided that I was getting too much feedback inductance when the motors were slowing down, causing a lost of steps. It took some observation to see the motor skip only when slowing down. I lowered
the voltage to 33v and was able to gain control of my y axis.
I am unable to provide you with a max on my motor speed, as I am still testing and have not tried to set the speed to the max.
Bruce
Bryan Mumford wrote:
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My motors are rated for 3.2 volts at 2 amps, driven with 24 volt choppers.
Higher voltages are a problem for small, low-cost tools. The Xylotex
drivers (3977 chip) max out at 35 volts, and the SLA7044 chip I'm
using is similar.
I'd be very interested in hearing from others who use 23 frame motors
on small tools. What step rates are you achieving?
Is anyone getting substantially more than 3300 steps per second, and
if so, what kind of driver are you using?
--
Bryan Mumford
Santa Barbara, California
