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Thread: Flickering & RRD-Pro

  1. #1
    Senior Member
    Join Date
    Jan 2016
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    115

    Question Flickering & RRD-Pro

    I know that a lot of LED dimming performance is in the driver, but I have a brand new multi-pendant chandelier with 19 LED lights.

    An RRD-Pro, which I thought had the best LED handling, has terrible flickering on all the pendants between 10%-22% dim levels, and there's a scene the homeowners love for which we need about a 12% dim. I've tried 8%, which doesn't flicker, but is way too low, and tried 22% and it's too bright. It's just annoying that there's strobing/flickering in that low range.

    Is there a different controller switch that might handle the dimming on this fixture BETTER than an RRD-Pro does? 10NA? 6CL? Willing to try anything before tackling if a driver change even possible on this large fixture that is on a 20-foot high ceiling.

    For what it's worth, there is a neutral wire available and on the RRD-Pro . Tried forward and reverse phase, and didn't see any difference.

    Thanks for any help or advice...

  2. #2
    Senior Member
    Join Date
    Jan 2019
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    311
    Are these screw in LED bulbs or an integrated LED fixture?

    I would say a new driver is probably the best option if setting forward/reverse phase doesn't do it. There just aren't many other options. You could try the CL or the 6ND but I would be shocked if it had better results. RRD-PRO is the most compatible dimmer Lutron has ever made.
    Evan Kirkhart- Home Electronics Solutions
    Santa Barbara, CA
    evan@homeelectronics.solutions

  3. #3
    Senior Member
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    Jan 2016
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    Thanks Evan. Was afraid of that. these are integrated bulbs. Driver change is pretty impossible now that it's mounted 18 feet up with 19 LED pendants hanging down. It'd be a monster job to get it off the ceiling to change the driver. So frustrating... a new fixture made just recently and that cost several thousand dollars, and they used cheap drivers.

  4. #4
    Senior Member
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    Jan 2019
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    311
    Scaffolding. I would try and reach out to the manufacturer to see if they have any dimmer recommendations. I have found some of the super high design fixtures often have cheap drivers as they spent all the R+D money on hiring a famous designer.
    Evan Kirkhart- Home Electronics Solutions
    Santa Barbara, CA
    evan@homeelectronics.solutions

  5. #5
    Senior Member
    Join Date
    Oct 2013
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    2,115
    Get the specs on the driver. Those custom, one-off fixtures often use 0-10v drivers. That weirdness you are seeing at 10-20% is what I would expect if you were dimming a 10v driver with a line voltage dimmer.
    Convergence Technologies Raleigh, North Carolina
    www.convergenceusa.com

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