Topics

1

FAQs / E-stop, combining switchs and opto islolators in series configuration?

« on: May 18, 2018, 02:52:53 PM »

I currently wiring up a new Taig Mill.  The Steppers are driven by Parker Compumotor OEM 750's and I would like to use the Fault Out opto isolators in the 750's in series with limits and E stops switches to trigger and E fault  input to Mach3.  Active low and the BOB has puldowns on the inputs.  I am wondering if there would be enough voltage drop across the four Opto isolators to cause problems, not in an E-stop condition, but causing false E-stops   I'm using an ESS and CNC4PC ESS BOB that I modified to be cable connected to the ESS vs direct plug.  Mach3, Win XP.

Thanks
Don