Short circuit portection circuit ?

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  1. #1

    Default Short circuit portection circuit ?

    Hi all , I have a delta PLC DVP14ES, which has 24VDC internal to use it with connection to inputs, but when anyone make short circuit to 24VDC by mistake the PLC stop working and there are an IC is damaged , how to make a simple circuit to protect PLC from damage (short circuit protection).

  2. #2
    Join Date
    Nov 2003
    Wellton, U.S.A.

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    Add a diode on the output. Then if 24+ and zero are connected no currenent will flow. The voltage will drop one diode, but I bet it will not be noticed.
    Always wear safety glasses while programming.

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