Just a WAG..but There is no heat sinking on that component at all in the picture. Stepper drivers throw off some heat.. less at lower voltages. Is the component reducing current to protect itself due to an overtemp situation?
Dave On 3/28/2015 2:37 PM, [email protected] wrote: > I have a question about the voltage to drive a stepper motor > 12 volts works but higher voltages make the motor weaker > I am building a simple stepper driver > A nema 23 2.7 amp stepper motor and 36 volt power supply > The controls are hand held, forward ,reverse, stop, and speed > I built the controls and driver using a 12 volt battery to test > Now I completed the project and am using the 36 volt supply > The motor runs at the same speed but it is so weak I can hold the shaft and > stall the motor > This is also the same with 36 and 24 volt batteries > With a 12 volt battery I can not stall the motor > I am using http://piclist.com/techref/io/stepper/SLAm/SLAm_bld.htm and an > Arduino > I would be happy if someone would point out my stupidity > > Richard > > ------------------------------------------------------------------------------ > Dive into the World of Parallel Programming The Go Parallel Website, sponsored > by Intel and developed in partnership with Slashdot Media, is your hub for all > things parallel software development, from weekly thought leadership blogs to > news, videos, case studies, tutorials and more. Take a look and join the > conversation now. http://goparallel.sourceforge.net/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
