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  1. cliff turnell

    looking to design a automatic backlash checker for gearbox

    Hi Group, I am in the beginning stages of designing an automatic backlash checker for small gearboxes (Nema 17 and Nema 23, possibly as large as 34) and wanted to bounce my ideas off this group. the basic idea is to have a stepper motor w/ encoder mounted to the input of the gearhead, "lock"...
  2. cliff turnell

    stepper drive input question

    I am finishing up a "seek home (SH)" command with a Productivity1000 PLC and STP-DRV-4850 stepper drive and have my N.O. prox sensors individually wired to the inputs (complete separate circuits that fire their inputs individually). For some reason the "EN (home sensor)" goes low by itself when...
  3. cliff turnell

    Good Day Group, I am having an

    Good Day Group, I am having an issue between my logic and the VFD that is controlling my motor. The VFD is an Automation Direct GS1. In my logic O2 is run/stop and O1 is direction (closed = CW and open = CCW, rung 6, line 3). What I am trying to accomplish is "if counter is equal to 1 then...
  4. cliff turnell

    Need assistance with an EZ-420 PLC E-Stop test bench program

    Hi Group, I have a EZ-420 PLC and part of a program and I am trying to create a complete program for an E-Stop test bench. I have just enough knowledge to be dangerous (well maybe not even that much) and am trying to scale a 0-10V signal for the EMP brake. I have been up and down the EZ...

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