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Weather station programming

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mostafa_ramadan
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Posted: ‎2024-06-13 02:58 AM . Last Modified: ‎2024-07-14 11:38 PM

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‎2024-06-13 02:58 AM

Weather station programming

Hello,

We need to control facade lighting (Dali Value) with weather station MTN682991 and brightness sensor MTN663593.

I select brightness sensor as sensor type (as attached pic.1)

now how to program Dali value object to this sensor input.

 

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Thomas_Rohde
Sisko Thomas_Rohde Sisko
Sisko

Posted: ‎2024-06-25 07:54 AM

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‎2024-06-25 07:54 AM

Hello Mostafa_ramadan,


if you are familiar with scripts ... you can try the following one.
It reacts simply on the normal Lux output (shown in your picture under the section "General").
In case the brightness is under a certain level (in my example 100 Lux), then the DALI-Brightness will be slowly increased. When it is completely dark then the brightness goes to 100%. See attached video.
This works the other way arround also.
With the given requirements ... this would be my first approach. What do you think about it? 

Here the script which reacts on each Lux-Level-Update.

-- Get actual Lux-Value
Lux_Value = event.getvalue()
-- Definition of DALI-Brightness-Value Group-Address
DALI_GA = '35/1/2'
 
-- If Lux-Value
if Lux_Value > 100 then
-- Greater then 100 then switch off (0%), if not already done
grp.checkwrite(DALI_GA, 0)
else
  -- Lower then 100 Lux
  DALI_Value = 100 - Lux_Value
grp.checkwrite(DALI_GA, DALI_Value)
end

Kind regards
Thomas

Application Design Engineer

See Answer In Context

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Heribert_Dölger
Lt. Commander Heribert_Dölger Lt. Commander
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Posted: ‎2024-06-13 09:01 AM . Last Modified: ‎2024-06-13 09:02 AM

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‎2024-06-13 09:01 AM

Hello

 

With the settings sccording your screenshot you will get 3 communicaiton objects: measured lux value, and two 1-bit objects for threshold 1 and threshold 2. The thresholds objects you can use to switch on and off the light.

 

Not sure if I have understood correctly what you want to achieve. If my answer doesn't help you please give some further details what exactly and how you want to control the DALI light.

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mostafa_ramadan
Ensign mostafa_ramadan
Ensign

Posted: ‎2024-06-22 11:57 PM

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‎2024-06-22 11:57 PM

Hello,

I need to control lighting Intensity depend on measured lux value from sensors.

 

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Erwin-vd-Zwart
Sisko Erwin-vd-Zwart Sisko
Sisko

Posted: ‎2024-06-23 11:17 PM . Last Modified: ‎2024-06-23 11:26 PM

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‎2024-06-23 11:17 PM

@mostafa_ramadan 

 

Normally lighting control is calculated in a sensor like a MTN630919 that is holding an calculation function for this, the sensor you have now doesn’t have that function, you can only use the brightness as a threshold and switch something within the set limits.

 

 

But i don’t recommend to use a weather station anyway as normally with constant light control you measure the conditions in the room including reflection and not an outside measurement that is not representing the desired 500 lux in a room itself. 

Just my 50ct..

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Thomas_Rohde
Sisko Thomas_Rohde Sisko
Sisko

Posted: ‎2024-06-24 12:03 AM

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‎2024-06-24 12:03 AM

Hello Mostafa_ramadan,

quick question ...
Do you have a Wiser for KNX (LSS100100) or a spaceLYnk within your installation?

 

Kind regards
Thomas

Application Design Engineer
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Erwin-vd-Zwart
Sisko Erwin-vd-Zwart Sisko
Sisko

Posted: ‎2024-06-24 12:24 AM

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‎2024-06-24 12:24 AM

Hi Thomas, i thought about this option and yes you can make script with certain thresholds to make a mapping with outside measurement 30.000 -> 50% output to DALI or whatever but i don’t think this will ever function properly as you don’t know the room conditions..

 

However this could be a “quick and dirty” implementation i would not recommend to go that way….

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Thomas_Rohde
Sisko Thomas_Rohde Sisko
Sisko

Posted: ‎2024-06-24 11:20 PM

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‎2024-06-24 11:20 PM

Hi Erwin,

maybe I missunderstood something but I do not understand "room conditions"?
The question is "We need to control facade lighting (Dali Value) with weather station MTN682991 and brightness sensor MTN663593." ... or?
In my understanding he needs to iluminate the facade (outside) of a certain building. 
But maybe I am wrong with it. @mostafa_ramadan , please correct me if I am wrong.

 

Kind regards
Thomas

Application Design Engineer
Reply
mostafa_ramadan
Ensign mostafa_ramadan
Ensign

Posted: ‎2024-06-25 02:36 AM

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‎2024-06-25 02:36 AM

Hi @Thomas_Rohde,

You are right I need to control outside facade dali fixtures and yes we have spacelynk and AS-P in project.

Reply
Thomas_Rohde
Sisko Thomas_Rohde Sisko
Sisko

Posted: ‎2024-06-25 07:54 AM

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‎2024-06-25 07:54 AM

Hello Mostafa_ramadan,


if you are familiar with scripts ... you can try the following one.
It reacts simply on the normal Lux output (shown in your picture under the section "General").
In case the brightness is under a certain level (in my example 100 Lux), then the DALI-Brightness will be slowly increased. When it is completely dark then the brightness goes to 100%. See attached video.
This works the other way arround also.
With the given requirements ... this would be my first approach. What do you think about it? 

Here the script which reacts on each Lux-Level-Update.

-- Get actual Lux-Value
Lux_Value = event.getvalue()
-- Definition of DALI-Brightness-Value Group-Address
DALI_GA = '35/1/2'
 
-- If Lux-Value
if Lux_Value > 100 then
-- Greater then 100 then switch off (0%), if not already done
grp.checkwrite(DALI_GA, 0)
else
  -- Lower then 100 Lux
  DALI_Value = 100 - Lux_Value
grp.checkwrite(DALI_GA, DALI_Value)
end

Kind regards
Thomas

Application Design Engineer
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Thomas_Rohde
Sisko Thomas_Rohde Sisko
Sisko

Posted: ‎2024-07-08 06:40 AM

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‎2024-07-08 06:40 AM

Hello Mostafa_ramadan,

does it work, or did you found another solution?

 

Kind regards
Thomas

Application Design Engineer
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