On 10/3/2013 10:41 AM, David Armstrong wrote: > On 03/10/13 17:29, Kirk Wallace wrote: >> I'm thinking about completing some work I did with AVRs and Modbus by >> making an adapter that has a Modbus port for a PC connection, with >> digital and analog IO for VFD control. This could allow one to add >> Modbus control to a VFD that normally only has keypad or button and >> potentiometer control. If there is any demand for such a thing, I could >> have some boards made, otherwise I'll just hack together a few for my >> needs. Another thought, there are cheap VFDs with Modbus that could be >> had for not much more than the adapter would cost. Any thoughts? > i'd be interested > > Dave
I ordered a Teco/Westinghouse JNEV-203-H1 from Wolfman Automation. Cost less than $300 for the single phase to 3HP 3-phase model. As-is it has some inputs that can be used fro various things. I plan to connect one to the spindle control output of my BOB. There are various addon cards available, including RS-232, RS-485, Modbus and others. Less expensive than a new 3HP single phase motor. I got the converter for my mill, will test the 3HP motor in my Monarch 12CK. If the motor is good I'll get another converter and sell the 5HP 220V single phase motor I have. ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60134791&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
