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  1. 29-11-2013 #11
    JAZZCNC's Avatar
    Lives in wakefield, United Kingdom.
    JAZZCNC
    Last Activity: 19-01-2024 Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 8,446. Received thanks 1,445 times, giving thanks to others 109 times.
    Quote Originally Posted by Wobblycogs View Post
    I'm happy enough with the e-stop circuit as it's just a bunch of N.C. micro switches and a big red button.
    Erm I wouldn't be.? It's using 5V signal from BOB it would be better if you run 24v thru the switches and have it thru relay like you have the Fault. Then just return the 5V signal thru relay contacts. 24V will keep the switches clean and less noise immune.

    Quote Originally Posted by Wobblycogs View Post
    The PNP inductive home switches are wired as per the PMDX manual so I think they are correct but I don't understand what is stopping them dumping a ton of power into the PMDX when the sensor is triggered. Do I need a current limiting resistor in the circuit and if so what size? Actually the same question goes for the AM882 fault circuit.
    Why not use NPN and the 12V on the PMDX to get around this.? Think the PMDX inputs can handle upto 33V but not sure about the amps.!!

    With the fault your not sending anything in just breaking or returning the signal.
    Last edited by JAZZCNC; 29-11-2013 at 06:13 PM.
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