Merten 649315

[Warichet]

Hi,

Anyone having a Merten 649315, Universal-Dimmaktor, REG-K/4x230/150W ? (or 649330 or 649350 or 649310 )

I'm unable to program this crummy thing to switch the light Off after bus revovery or download.
Maybe there is a trick or pre-requisite to activate this parameter , but I'm unable to see it.

I came to the conclusion that, whatever this parameter is set to, "no reaction, switch off, switch on with starting behaviour", it is ignored.

Thank you for any tip.



PS: Already posted a question to Merten TechSupp, no reply yet.

[HartmutB]

Hi Raymond,

I've got three of the 649315 installed and just checked the start-up setting with one chanel.

My devices have been set to "no reaction", that was OK so far. I changed one channel to "switch off", then manually switched on the channel and did a programming. The light switched off as expected.
Then I set it to "switch on with ..." and did a programming. The former off lights switched on as expected.
Finally, I set it to the default value of "no reaction", reprogramming and the lights (still on) kept shining. Again as expected.

So the dimmer is OK for me. I'm running the application "Universal dimmen 3242/1.0" and checked it in combination with a 5x20W halogen spot.


Regards,
Hartmut

[HartmutB]

In addition: Here are the settings, that work for me.

Regards,
Hartmut

[Warichet]

Hi Hartmut,

Thank you for taking the time to test & post

So the dimmer is OK for me.

Ha !
If it isn't the dimmer, it must be me then ?
I got the same behaviour on all 4 channels. I'll carefully check your settings.

I'm running the application "Universal dimmen 3242/1.0"

Yup, have the same.
My device is brand new, maybe a

[Warichet]

Hi Hartmut,

In addition: Here are the settings, that work for me.

I checked each & every of your settings, no luck
The only difference I see: I use a halogen lamp, but I guess that shouldn't make any difference (I did a power off to force load recognition)
So, we have the same device, same application version, same settings and different behaviour, ûûh !

Also, except this crummy bahaviour, everything seems to work fine with this dimmer.
It has the same behaviour on all 4 channels (2 dimmable CFL, 2 halogen, but I tested only on the halogen channel) at least, it is consistent
The devices are brand new.

As an aside, when I requested the help of Merten's TechSup, they asked to get the whole project ! bizarre, just for a dumb lamp ?
So I thought it might be a combination of several parameters, but now that I've exactly the same as yours .... this doesn't hold true.

Back to square one.

[Warichet]

The only difference I see: I use a halogen lamp, but I guess that shouldn't make any difference

Well, well, bizarre thing here
When I set all 4 channels to "switch the light Off after bus recovery or download", it works as expected.

When I set channel 3 (halogen 150W) to "no reaction after bus recovery or download", sometimes the lamp remains On at 10-20%, sometimes it is switched Off correctly

When I look in the monitor, it says the lamp is Off, although it is on at 10-20%

Not very reliable !

Suppose you go on holiday for 3 weeks, you get a power drop while you are away, well, all the lamps on that dimmer stay on for a couple of weeks.
Nice energy saving plus a fire hazard

[HartmutB]

Raymond,
I think, this is one of the problems, one probably never gets solved. It might be related to whether conditions or the language, the user normally prefers .
I checked the restart-settings on channel B. Not more, not less. Maybe, I have the same problems, but don't know.
To be honest: It would make be unhappy to have this "mysterious" behaviour, but is it really a problem? It's a problem with restart after downloading settings (completley controlled by yourself) and with power failures (should be not often, even in the Midi-Pyrénées (please forgive my long time learned sarcasm). If not, a UPS for the KNX power supply should do it.

What is the dimmer behaviour, when you do a bus reset (or a download) and the lamps are off before? I wouldn't expect the lamps to switch on after power recovery (at least, my twelve channels keep off).

If really nobody can help: I could test your dimmer in my environment with the exactly same settings I'm using. If it works, then ... no idea.
If it has the same failure, then give it a nice but strict letter and send it to Merten (if this is an option for you: PN).

BTW: Did you check device details, especially bus voltage? Unpredictable behaviour is often related to bus power problems ... I've attached the device info of the ETS of one of my dimmers.


Regards
Hartmut

[Warichet]

Hi Hartmut,

I think, this is one of the problems, one probably never gets solved. It might be related to whether conditions or the language, the user normally prefers

Well, Merten's TechSup decided to take the device back, so I guess this behaviour is abnormal.

Maybe, I have the same problems, but don't know.

If I have a problem, I prefer to know, and eventually act upon it, before it's too late.

It would make be unhappy to have this "mysterious" behaviour, but is it really a problem?

Imho, yes, definitely ! for the reason mentionned above.

and with power failures (should be not often, even in the Midi-Pyrénées

Wouaaa . My dear friend, I suspect you are living on another planet, and you have no idea about this environment

(please forgive my long time learned sarcasm).

Never

If not, a UPS for the KNX power supply should do it.

I thought about it, but, both the 220V AND the Bus voltage must be present to maintain operating conditions of the dimmer.

If really nobody can help: I could test your dimmer in my environment with the exactly same settings I'm using.

Thank you very much for this kind proposal, much appreciated (your sarcasm is forgiven )