I have the C25 BOB coupled with the Ethernet Smooth Stepper. Can you use the 0-5v output to control speed of VFD thru Mach4 or do I need a speed control board also?

1856 views  June 23, 2019

You may want to consider adding a C41S to your setup:

https://www.cnc4pc.com/c41s-pwm-variable-speed-control-board.html

You can use this wiring diagram:

http://cnc4pc.com/Tech_Docs/JINAN2ESS.pdf

Wiring to the C41S may be a little messy.  It may have been a better option to go with a C82 in the frist place:

https://www.cnc4pc.com/c82-dual-port-multifunction-board-b.html

Another option may be to add a C11G to LPT3 of the ESS:

https://www.cnc4pc.com/c11g-multifunction-cnc-board.html


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