L5504D2AP compatable LED downlights

Discussion in 'C-Bus Wired Hardware' started by TimothyO, May 17, 2020.

  1. TimothyO

    TimothyO

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    Good Evening,

    I was hoping to gain advice on a job I am quoting where there is 130 Halogen downlights installed on a L5504D2AP dimming system where the customer wishes to convert to LED. I've asked my wholesaler (ideal electrical) for a compatable downlight but they haven't been much help and this particular customer really wishes to change over to LED. I've gone as far as I can with looking for compatability with manufacturers but really want to have some kind of guarantee before I order and install.. I worked with CBUS systems many years ago but don't really have much experience with the lighting systems other than just throwing in any LED downlight would be problematic...

    Also customer has asked to changeover some of the glass surrounds on some of the display switches, attached is a photo. Does anyone know a product code or if they are even available, again my wholesaler has been pretty useless in helping me.

    Are these systems quite dated now in what they offer compared to latest technologies?

    TIA
     

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    TimothyO, May 17, 2020
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  2. TimothyO

    Wonkey

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    Changing halogen light to LEDs has been covered many times on the forum have a search. Then buy just a few and try them.
    Issue to get you customer to look for are flashing when OFF and poor dimming. Normally these issue happen when there is only 1 or 2 lights on a circuit.
    Try Haneco I have success with there product.
    Contact Clipsal for spare parts or ebay
     
    Wonkey, May 18, 2020
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  3. TimothyO

    JasonY00

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    Hi Timothy,

    If you run into strife with only one or two LED’s on a dimmer group and they are flashing when turned off or they are very dimly lit when when turned off, you can add a Clipsal 31LCDA (load correction device) into the load at either the first LED lamp or at the dimmer. It’s basically a bypass capacitor with some other passive elements in some epoxy.
    https://www.clipsal.com/products/detail?CatNo=31LCDA&tab-document-1=0

    The CBus dimmers still pass a micro current even when the dimmer group is off and as the LED’s have such a low impedance they can remain dimly lit.

    Around 10:00pm and afterwards when the supply authority sends the ripple control signals down the line to turn the off peak devices on, the LED’s will furiously flicker for quite a few seconds. Once again this is due to the low impedance of the LED.

    The 31LCDA will mitigate both of the above to an extent and I have used them with success.

    The above issues are mostly notable with only one or two LED’s on the load. If there are more LED’s on the load the flickering is not as pronounced and the LED’s will be off when the load is off.

    I trialled this with a GPO I have set up for plug-in floor lamps on a CBUS dimmer 1A circuit and a power board. I kept kept adding the LED’s to the power board until the problem of being dim when off went away. The minimum number for some basic Atom branded LED’s from JRTurk was 2. An addition of the 31LCDA sorted it out.

    I must say that I have some Clipsal branded LED’s (not cheap) but they don’t seem to have the issue with the “dim when off” or flicker issues described.

    The advice of trialling a couple “in situ” is good and cheap. Try it and think about adding a 31LCDA if needed.

    Cheers

    Jason
     
    JasonY00, Jun 4, 2020 at 10:55 AM
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  4. TimothyO

    JasonY00

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    Sorry, forgot the answers to the rest of your questions.

    I think you can still buy the fascias for the touch screens even though the screens have been mostly discontinued. Just look up the Clipsal catalog for the part numbers and google search for suppliers or if you are desperate, ebay has listings.

    As far as obsolescence goes, well the c-bus system is wired and therefore much more reliable than the off-the-shelf wifi stuff you will get from JBHiFi, albeit not cheap and requires specialist integrators.

    Look at some of the voice integration forums here using homebridge on raspberry pi’s. In my opinion this has rescued CBus from obscurity in the day of portable devices and voice control as it facilitates integration with Apple homekit and voice control via Siri, google and Alexa. The wiser app of the past just didn’t deliver like HomeKit integration does.

    Cheers

    Jason
     
    JasonY00, Jun 4, 2020 at 11:06 AM
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