Home C-Bus L5504D2A Leading Edge dimmer with Trialling Edge Dimmer LED downlights

i have these LED down-lights which are12 volt, 18 watts, with a total of I think there six chips in each Down light, i'll show you what's happening anyway I've got the ( C-Bus ) toolbox (toolkit ) on the laptop andthe laptop plugged into a RS232 controller that's then plugged into thec-bus network, that allows me to control the c-bus network with thelaptop, I can reprogram the light switches to do what every I need the lights switches todo, If I want to change away something works like timing control, Dimming control or anyof those sort of functions, the C-bus allows you to do that and one of thebenefits I like or one of the things like about the c-bus, is.

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it has the.

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I'll just go around the front hear.

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ok so the c-bus system.

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the c-bus system hasthe ability to have all different types of light switches, you can have touch panel light switch'syou can even have, you can even get a controller that will connect up to theinternet so if you wanted to you can use your iPad or iPhone to turn lights and fans orwhatever is on the ( c-bus) network on and off in my case I've got a fairly basic c-bus system, I just got all the lights are on the c-bus in the house and I've just got basic gang plates where I need them which are fully programmable to dowhatever you want, one of the main things I wanted the c-bus for was I wanted to be able to controlthe heat lamps and the fans in the bathrooms because my kids have got a bad tendency toleave the heat lamp on or even the fans on, and the fans.

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while I mean the fansare good for a little while but you don't run a fan for more than 40 minutesbecause you can burn them out.

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and that's not a very good thing to have to go and replace your fans and these also a possibility of a fire hazard if you burn your fan out.

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but anyway, so the c-bus controls the fans and the heat lamps and all the lights, the down lights on thedifferent ne.

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on the different controls, and so I've got thebathroom lights so if the kids leave the lights switched on.

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after 30 minutes the heat lamps turn themselves off.

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once again the same with the fans.

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if the kids leave the fans on, even in the laundry, If Laundry fan gets left on, it will turn itself off afterabout 20 minutes, the other thing to is you can add peripheral systems to the c-busnetwork, like temperature sensors and water tank levels and all those sort ofthings too so if you had a couple of water tanks and one was getting a bit low, It can automatically sense that the level of water is low and turn a pump on to say refill thetank back up to a decent level or if you've got a heater.

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or a wood heater in our case.

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with a fan, you can have a GPO ( power point ) a general power outlet on a c-bus network if you wanted to be inclined be inclined that way and have the fan on the heater turn-on when it comes to a certain temperature in the room, so thathas a fair bit of flexibility to the c-bus network so problem I have.

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ok so this is the rs232 controllerpc interface.

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pc interface on this side c-bus on this side, we'vegot c-bus light ( led ) means were got a good connection and we've got the.

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unit's given us good comm's.

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the comms light on as well, and when ever I'm doing something with the laptop that comm light will flash to indicate thatsomething's happening so I'll show you what my problem is.

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now if I go into the family lightswitch that controls these downlights and there's six down lights in this lounge.

, sorry dinning room and/or family room and there's another six lights in the lounge roomthat are on the same.

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there basically on the same controller's, there on a dimmer controller.

what I found though is trying to dim these lights isn't Ideal on a c-bus when it's a leading edge type c-bus not a trailing edge c-bus, so but the trailing edge c-bus unit ( controller ) was like $400 more It was a lot more expensive, so that's why I got the leading edge c-bus controller and I guess I should've got leading edge down lights, so if I change these lights, ramp them down I'm ramping them down now to about 80%, there starting to give a little bit of flicker now your probably just see that flickering.

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the flickering is not so bad if there only just been turned on but these lights have been on for about half an hour so if i bring them down to about 60% we still have a fairly bad flicker but there not coming down brightness, there still at full brightness but there flickering I'll bring them down to about 40% we still have them flickering but there still at full brightness and if I bring them down further, I'll keep bring this down.

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get down to 20% at 20% there still the same thing, thereflickering and there still at full brightness get these down to about 10%.

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just under 10%.

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and they dim down to about half brightness and then they will flicker back up to full brightness get them down, there at 5% now.

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so around 5% there are half brightness and there study sort of at halfbrightness but there's no transition from full brightness down tono brightness in the ramping its just either.

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its on or it's half and this isnothing in between.

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so I'll turn them off now so what I had experimented with, is I putresistive load on the 240 volt side of the Switch mode power supply, one of the switch mode power supplies in the lounge room lights here the lounge room lights are off at the moment and so when I say a resisted load basically all I've done is put a 20 watt / 240-volt incandescent light globe plugged in with in to the same circuit asthe input to one of the switch mode power supplies at the 240 volt level andthat resisted load seems to be enough it's only 20 watts but that resistor load seems to beenough to make the downloads behave properly so let me just show you whatI mean by behaving properly I'll grab my camera and I'll swing it aroundto the lounge room, let me just get back up here.

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I been home with a broken leg for 70 daysand i'm getting quite bored ok so hopefully you can see in thelounge room there let's just turn the lights on the startof with.

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so I select the lounge room lights on the toolkit and I'll turn the lounge room lights on ok so now if I ramp the lounge room lights downand bear in mind these one's have got the resistive load on the inputs side of the switched mode power supply thats going to the LED down lights the LED down lights have their own individual switch mode power supply so there a total of 6 switch mode power supply total of 6 down lights but there's only one resistive load on one of the down lights so I'll bring the down lights.

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I'll ramp the down lights.

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If I can get it to come on the right screen.

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oops.

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that's half bring it back right this is a work in science here.

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so bit of anexperiment.

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ok so we are at 100% ramp bringing it down to 90%.

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continuing down.

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we're down to about 50%.

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no.

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sorry.

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now we're down 50% this screen got a bit of a lag on it ok so we're down to about 40% and we're come down to 30% and my screen lagged again, hang-on, ok we're down to 10% and that's a five percent and that should be zero or off.

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and I don't know if they are actually off, I'll have to have a look.

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yes they are, there off.

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ok so I'll just ramp them back up so I'm ramping them back up to about 20% .

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and its stop for me I've got a bit of a com's issue withthe usb to com adapter.

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or RS232 adapter, so.

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that's ok.

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just have to bear that in mind when I'm trying to ramp this up, so we're down.

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we're up to 50% so we're now up to about 60% and we're now at about 80% and now we're at a 100% so I hope that video demonstrations is of some use to someone and I'm sure I'll get some feed back tell me.

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any ideas I can do to try to eliminate the need to have to use a.

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resistive load like a incandescent light globe because i really don't like the idea of an incandescent globe in the roof space just so i can dimme lights, even though its only 20 watts, I would rather have a better a better wayof doing it if anyone's got any Ideas please post in the comments * CC and Subtitles © 2017 VK3HAU *.

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