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viking
Il 17/06/21, 09:28
hello,

i write you directly 'cause i have a problem to post an image on the forum. i attach to you what i ve made.
here is the sequence i need absolutely:
1. if the co2 level goes under 800ppm it activates the c02 switch
1b. at the same time it starts an impulse timer of 2min30sec each 30 min. (none when above 800ppm)
1c. the co2 switch is disabled when the sensor reaches 800+1000 ppm or when the timer reaches 2min30sec (in case of sensor failure for e.g.)
2. during this 2min30sec/->1800ppm the fans are idling 5%/0%
3. after this another impulse timer starts for 15min once (each 23h...) for fans to continue idling
4. speed controller is disabled after 15+2min30sec. and fan controller take toolbox takes control

i ve tested it yesterday and it seems to be ok except for step 4.

i have the speed compare which compare the lowest speed between the idling 5%/0% and fan toolbox. when deactivated, the speed controller act as an activated speed controller with 0%/0% and it is chosen by the comparison.
is it possible to do that a deactivated speed controller acts as non existent instead having the same behavior as an activated at 0/0 ?
  • Segnala

I have same problem to post a picture to a comment. For now it works on the Post only.

I need to see the how it is designed to be able to follow. Or with a picture or very nice Idea you just make a room in the demo controller. We have check this and are of the opinion that everything works correctly...

G-Systems Engineering Ltd., Alain Gressly il 17/06/21, 09:39
hello,

i have made a room in the demo controller named "speed controller behaviour" but it doesn t work. it always take the value of the speed controller which is lower even when the speed controller is not activated. 
for the speed comparison a deactivated speed controller is considered as an activated one @ 0%. but i would like to have this two state :
a. forced speed @ 5% which is lower than the fan controller (100% set in the demo)
b. when speed controller is deactivated speed @100% because for the comparison the speed controller is invisible.

best regards
nils

Le jeu. 17 juin 2021 à 11:39, Alain Gressly <alain.gressly@g-systems.eu> a écrit :

I have same problem to post a picture to a comment. For now it works on the Post only.

I need to see the how it is designed to be able to follow. Or with a picture or very nice Idea you just make a room in the demo controller. We have check this and are of the opinion that everything works correctly...

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viking il 17/06/21, 17:56

You have used the function compare and set it to lower, but 0 "zero" is not nothing, 0 in your case is the lower value.

G-Systems Engineering Ltd., Alain Gressly il 18/06/21, 09:27

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Alain Gressly
Il 16/06/21, 10:15

Creative work, you will manage this for all I/O signals not for the variable ones for now.

We will create a variable switch-over commanded by a I/O signal input. "low priority" this will take some time.


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