Question regarding interfacing inputs to plc

Discussion in 'Homework Help' started by yousuf, Mar 29, 2012.

  1. yousuf

    Thread Starter Member

    Mar 21, 2009
    11
    0
    Hi,
    I have a query that if one needs to interface inputs to p.l.c. input module that are coming out various sensors/transducers?Since if I have some inputs from 220V source while some are from power transistor,s.c.r. etc.Definitely there are some inputs that have current rating more than what p.l.c. can handle. Then how can we interface such inputs?
     
  2. mrmount

    Active Member

    Dec 5, 2007
    59
    7
    Use interposing relays.
     
  3. yousuf

    Thread Starter Member

    Mar 21, 2009
    11
    0
    mrmount
    But according to my knowledge interposing relay can be used for output side i.e. to drive high current(and voltages) connected at output terminal.
     
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