Dimmer module controlled contactor

Discussion in 'General Discussion' started by bpharris, Apr 21, 2006.

  1. bpharris

    bpharris

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    I have just installed Dimmer module and want to activate a contactor with one of the output channels. System works fine for turning the contactor on but the ambient votage at the channel terminal holds the contactor in switched mode.

    I do not have a relay module and would prefer not to install one (many reasons eg space, external installation, etc). Customer wants dimming control of lights so Dimmer Module must stay.

    If I parallel a load across the contactor coil this will drop the ambient voltage sufficiently to deactivate the coil. I used a 60W globe for this purpose but would prefer not use something as prone to failure as a globe. A resistor would be good but I cannot source a suitably rated device. I have been informed by CIS technical that a 15W load would do the job.

    If anyone has ideas of a suitable load type or alternative system I would appreciate your input

    Cheers

    Brendan Harris
    Lanscape Lighting
     
    bpharris, Apr 21, 2006
    #1
  2. bpharris

    2dogs

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    Maybe if you try a 31CAP it will be enough of a load to solve the issue. They are a capacitor/resistor in series that is available for loading of two wire products. You install across the load like the 60watter.

    Maybe.........
     
    2dogs, Apr 26, 2006
    #2
  3. bpharris

    bpharris

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    To 2dogs

    Thanks for the suggestion. I'll let you know how it goes

    PS How did you get your name?!?
     
    bpharris, Apr 27, 2006
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  4. bpharris

    JohnC

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    Just don't forget that there is a cheap SINGLE Channel relay available... I know it's not what you want, but so many of us forget those 1ch and 2ch (non-din rail) beasties are available... and boy are they handy for fixing problems like yours !

    Oh, and don't forget that the 1ch also has a (rudimentary) 0-10V output, for analogue dimming of fluoros etc. That's easy to forget that feature because CIS don't really tell anyone in their marketing materials - it's only listed in the installation leaflet.
     
    JohnC, Apr 28, 2006
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