10/15/2019 3:17 PM | |
Joined: 5/7/2018 Last visit: 7/1/2024 Posts: 25 Rating:
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Ok, i attached my "masterpiece" here.. I'll write bit later some info how i would like to be controlled ;) |
10/15/2019 5:57 PM | |
Joined: 5/7/2018 Last visit: 7/1/2024 Posts: 25 Rating:
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So basically what i want system to do is: Make hot water: -control the burner (Q1) with the tank temp (AI2), with adjustable hysteresis (B003) -when the flue gas temp (AI3) or the boiler temp (AI1) is over setpoint and the burner (Q1) is running i want the load pump (Q2) on, so it transfers the heat in to the tank. -when the burner (Q1) is stopped, by error (I1 or I2) or by the tank temp sensor (AI2), i want load pump (Q2) to stop after delay (B011) to prevent boiler to overheat. Control the floorheating system temperature: -control the mixingvalve (AQ1) so the water temp for the floorheating is right temperature for the current outdoor temperature (AI6) -Protect the underfloor heating with adjustable water temp limit (B024) so it wont rise above setpoint (+45c), when over limit, mixvalve (AQ1) is closed and it that does not help, then the pump (Q3) is shut down. -stop the heating pump (Q3) if the water OUT temp (AI5) is hotter than the water IN temp (AI4) and turn it back on after some time, maybe 3hrs and run for 1hr with out stopping to the AI5 temp. Other stuff: -I have small UPS providing electricity for my pumps and burner etc. BUT if there is long blackout and the system shuts down, I want the LOGO to wake up and continue business as usual, automatically, when the power is back on. -also have some outdoor lights, but thats not important atm. I know I should have started this thread with this post, but better late than never... I believe i have made tons of mistakes with my diagram and I would appreciate any help from here :) Latest .zip attached. edit: now it is I/O listing: AI1 Boiler temp AI2 Tank temp AI3 Flue temp AI4 Water IN temp AI5 Water OUT temp AI6 Outdoor temp I1 Overheat protection I2 Burner error I3 Lux relay I8 System On AM1 AM3 AM4 AQ1 0-10V mixing valve Q1 Burner Q2 Load pump Q3 Heating pump Attachmentheatingsystem.zip (244 Downloads) |
Last edited by: nogoodwithlogo at: 10/15/2019 18:16:50Last edited by: nogoodwithlogo at: 10/15/2019 18:19:40Last edited by: nogoodwithlogo at: 10/15/2019 19:13:36 |
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10/15/2019 7:38 PM | |
Joined: 12/18/2014 Last visit: 8/14/2024 Posts: 33557 Rating:
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In attachment an example for calculating of 2 heating curves. 1 x LOGO! program. 1 x Excel file for calculating Gain and Offset. AttachmentHeating curve.zip (255 Downloads) |
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