10/30/2023 10:54 PM | |
Joined: 9/15/2022 Last visit: 11/11/2023 Posts: 2 Rating:
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Hello everyone! I am new to this forum, tough I am using app examples for some time here at SIEMENS Support. Attached is the closest I got to that, but not sure if that is ok. Is there anyone here that already did this kind of app? Example: Appreciate the help. Aleksandar Attachmenttwo-point heating analog output.zip (439 Downloads) |
11/11/2023 3:14 AM | |
Joined: 9/15/2022 Last visit: 11/11/2023 Posts: 2 Rating:
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PTs are not important, both are Pt100 or Pt1000. Resolution is also not important. 0-10V is 0-100% valve opening. So 5V would be 50% open valve. Like any other analog 0-10V control. This is a valve actuator used on site: SAX 61.03U Question is: what combination of function blocks could be used to get that to work? The idea is that when an ambient temp is lower, the flow temp should go higher. The curve for my example should be: 1st point: -15deg Celsius ambient, +70deg Celsius flow; 2nd point: +15deg Celsius ambient, +25deg Celsius flow. So at every outdoor temperature degree in this range, there is a defined flow temp set point, but it has to be given to PI controller somehow, so the valve actuator can control the flow temperature precisely. |
Last edited by: Sasha988 at: 11/11/2023 03:26:08 |
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11/11/2023 7:39 AM | |
Joined: 12/18/2014 Last visit: 8/19/2024 Posts: 33589 Rating:
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In attachment a possible solution. Per display you change the values of the limits (min and max) of outside temperature and flow temperature. Also per display you change the status of the softkeys of manual/automatic and holiday. AttachmentMixing_valve_8.3.zip (356 Downloads) |
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12/21/2023 2:18 PM | |
Joined: 6/19/2017 Last visit: 8/5/2024 Posts: 8175 Rating:
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New question published by Otobit is split to a separate thread with the subject Show the curves through virtual display. Best regards |
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