Dc SSR circuit problem


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  1. #1
    Join Date
    Nov 2006
    Location
    Melbourne, Australia
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    Angry Dc SSR circuit problem

    Hi everyone, I have a challenge (4 me) at which after many many attempts and killed a couple SSR. Attached is my circuit. The first part of the ssr works as it has a led indicator built in. (HFS40 05D-50D2T-L(555)). The IC1 pic 16f88 outputs on portb.0 to the SSR
    But cant get it to control the coil on a solenoid. I get no voltage on the output pins of the SSR.

    The circuit is to open and close FESTO pnumatic cylinder, confirm the cylinder is in position via FESTO reed switch.

    PLEASE can someone point me in the right direction

    Thanks in advance
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    IF ITS STOCK IT WONT ROCK

  2. #2
    Join Date
    May 2004
    Location
    NW France
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    3,532

    Talking Is it a joke ???

    Hi, Cooter

    Looks an industrial project, no ???

    BUT ... do you REALLY think someone will understand what is happening here ???

    just provide us a nice scheme ... WITH you SSR, if possible !

    BTW ... you should have a closer look at your SSR Datasheet ... but, it's just an idea ...

    Alain
    Last edited by Acetronics2; - 12th September 2009 at 10:33.
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  3. #3
    Join Date
    Nov 2003
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    Wellton, U.S.A.
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    Default

    Have you tested the SSR output with an LED?

    What are the specs of the solenoid? Flyback inplace?
    Dave
    Always wear safety glasses while programming.

  4. #4
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    Location
    NW France
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    Wink

    Hi, Dave

    I think cooter did not understand his relay is to consider like a Power - optocoupler ...

    don't you ???

    Alain
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************

  5. #5
    Join Date
    Nov 2003
    Location
    Wellton, U.S.A.
    Posts
    5,924

    Default

    Quote Originally Posted by Acetronics View Post
    Hi, Dave

    I think cooter did not understand his relay is to consider like a Power - optocoupler ...

    don't you ???

    Alain
    Yep, that is why I ask about the LED to see if cooter understands the workings.
    Always start with blinky...
    Dave
    Always wear safety glasses while programming.

  6. #6
    Join Date
    Nov 2005
    Location
    Bombay, India
    Posts
    862

    Default

    Hey Cooter

    You need to use the output of the SSR as a switch in series with your load. You seem to have connected it across your 12 V supply. That is killing your SSR.

  7. #7
    Join Date
    Nov 2006
    Location
    Melbourne, Australia
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    25

    Talking

    Thanks everyone, It works. So simple now I look back at it
    IF ITS STOCK IT WONT ROCK

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