3/14/2017 2:05 PM | |
Posts: 69 Rating: (0) |
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Last edited by: Min_Moderator at: 3/15/2017 11:21:35 AMNew subject after splitting |
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3/14/2017 2:38 PM | |
Joined: 12/18/2014 Last visit: 9/20/2024 Posts: 33807 Rating: (4200) |
hello norimane, what do you want now? A program for an S7-300 or a program for a LOGO! ? |
3/16/2017 9:25 AM | |
Posts: 69 Rating: (0) |
hello ixo65, sorry, I have not paid attention |
3/16/2017 4:28 PM | |
Posts: 69 Rating: (0) |
hello duris-i, thank you very much and good luck for you too. |
3/16/2017 6:44 PM | |
Joined: 9/27/2006 Last visit: 9/20/2024 Posts: 12282 Rating: (2684)
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Hello norimane; The type of program you are trying to create is often refered to as a "lead lag" control, and it is very often used with multiple pumps, or in your case, compressors. You can search for lead lad control on the web, you will find a few discussions on the subject. For example have a look at this discussion (from another automation site): http://www.plcs.net/dcforum/DCForumID5/1050.html Note that you will have to create logical definitions of which pump will be lead (based on the running hours, or attained pressure...), determining the order of lag compressors (which one is the next to start) and have signals telling your program that a compressor has failed starting, or is out of the rotation (example: for maintenance), before you can even start programming the lead lag sequence. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 3/16/2017 7:21:46 PM |
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This contribution was helpful to3 thankful Users |
3/17/2017 8:25 AM | |
Posts: 69 Rating: (0) |
hello Daniel Chartier, I don't know how I can thank you really it is very helpful, thank you very much for your help. best regards. Norimane. |
3/22/2017 12:03 PM | |
Posts: 69 Rating: (0) |
hello, please how can i do ARU emergemcy stop with cont , i know just with grafcet (s off,s-all,s on)
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3/23/2017 10:46 AM | |
Posts: 69 Rating: (0) |
hello piotr.M: thank you for replying me don't understand very well. can you please explain more to me. |
3/23/2017 10:47 AM | |
Posts: 69 Rating: (0) |
hello piotr.M: thank you for replying me don't understand very well. can you please explain more to me. |
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