wireless with LEDS

Discussion in 'C-Bus Wireless Hardware' started by Richc, Apr 23, 2009.

  1. Richc

    Richc

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    just did a job with 1 channel relay switch saturn wireless
    got it setup on the wired network no problem
    but in the off condition the leds are at half brightness
    measured at 110 volts.
    on is full brightness

    the wattage of the fancy lights i believe to be less than
    20 watts

    could this cause a faulty condition?

    richard

    thanx to mark for resetting my password
     
    Richc, Apr 23, 2009
    #1
  2. Richc

    ashleigh Moderator

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    There is a minimum load rating on these, and its on the label from memory. I'm pretty sure its either 25W or maybe even 40W.
     
    ashleigh, Apr 23, 2009
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  3. Richc

    Newman

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    The LED indicators on the buttons on the unit are at full brightness when the channel is turned on and they glow very dimly when the channel is off. This is so that you can find the unit in the dark. Is this what you are seeing?

    Or...

    Are you saying that the LED lighting fixtures connected to the load terminals of the unit are still glowing when the relay unit has turned them off? If this is the case then it's almost certainly the minimum load rating of the unit.

    Wireless units are "2-wire" devices which means they have no Neutral wire connection, just like normal light switches. Unlike normal light switches, they need constant power. To get this power they trickle a very small amount of power through the load on channel 1. This can make things like LED lighting fixtures turn on a bit. To solve this problem, either increase the minimum load or fit a bypass capacitor across the input terminals of your LED fixture. Such a capacitor needs to be about 1uF and X2 rated.
     
    Newman, Apr 23, 2009
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  4. Richc

    Richc

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    leds

    yeah thanx for that .

    its a fancy chandelier thingy with tiny leds all over it but very very dim
    like christmas lights.

    it makes sense that the tiny current at "off" is still enough to power it

    were going to try a 2 uF cap from a ceiling fan in series in the neutral


    richard
     
    Richc, Apr 24, 2009
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  5. Richc

    Newman

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    Connecting a cap in series with the load won't do anything to help. You need to put the capacitor in parallel with the fitting so that the tiny bleed current can bypass the LED fitting and travel through the capacitor.
     
    Newman, Apr 24, 2009
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  6. Richc

    Richc

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    yeah you're right
    done the job now with cap in parallel and leds dont turn on.
     
    Richc, May 7, 2009
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