12/20/2015 7:51 AM | |
Joined: 12/18/2014 Last visit: 10/1/2024 Posts: 33857 Rating: (4210) |
Here's one way to calculate the heat curve.
AttachmentCalculation_of_heat_curve.zip (221 Downloads) |
This contribution was helpful to1 thankful Users |
12/20/2015 7:49 PM | |
Posts: 4 Rating: (0) |
Thank you ixo65 and i will test this. hopfully this will get me forward in the programing |
12/21/2015 12:40 AM | |
Posts: 4 Rating: (0) |
The calculaten helpt me and thanks. The next thing that i have problem with is that i get a value from the curve "350" and this i use as a setpoint for the PI regulator but i have tryed now to figure out how to also get the reture water temp in the figures of for exampel 320 so i can regulate the Geothermal heating with at PI regulater thats have the setpoint from the outside temperatur and the heat curve and regulate on the retur water that den sets 2 outputs dempenden on the demands fron the regulator. See the file Sorry for maby simple questions but i feel its was some time ago that i did program. Best Regard Andreas AttachmentGeothermal heating 2.zip (180 Downloads) |
12/21/2015 1:29 PM | |
Posts: 4 Rating: (0) |
Hi thanks that you taking you time on this :) 1, The cursor key was just for testing, I have change this now so the heaters don't goes on when the outside temp is +20 degrease or higher. 2, What I are trying to do is to is to regulate my Geothermal heating with Logo 8 instead of the old regulator that is broken. The old regulator was regulated the return water depending on the outside temp and the heat curve. from that regulator the compressor for the "Geothermal heating" is ON or OFF and if there is to cold outside and the regulator demands more heat then the compressor can give, then the "electrical Heater" is ON or OFF. Hop this makes it clearer if not let me know, and I will translate the function description more and better. That I have problem now with is that the setpoints from the Heat curve gives for example a value of 350 but the input from the regulator is for example 10 .
AttachmentGeothermal heating rev1.zip (180 Downloads) |
12/22/2015 2:14 AM | |
Posts: 1 Rating: (0) |
here is the function description of what I need to control. Hope this makes it clearer what I am aiming for whit to less experience of LOGO
BR/ Andreas AttachmentGeothermal heat control.docx (188 Downloads) |
12/22/2015 10:06 AM | |
Posts: 153 Rating: (16) |
Hi. 1. Which article of the reture water sensor QAD (prod/ SIEMENS) in system? http://www.techprilad.com/upload/File/tech/Siemens/siemens_QAD_Q1801en.pdf 2. what type of outside sensor temperature ? The task is complicated by the curve of the reture water sensor (LG-ni 1000) . It distorts the parameters in LOGO . If used types pt100/pt1000 , the decision would have been easier. |
Last edited by: Andres [Str] at: 12/22/2015 10:07:49 AM |
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