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3 Pumps Control with 1 Standby and two Active Alternatively

Created by: Haffy at: 12/4/2018 10:10 PM (11 Replies)

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12/4/2018 10:10 PM	Rate (0)
Haffy Posts: 4 Rating: (0)	Hey I need help for PLC programming to control 3 pumps out of them one is standby and the two are working alternatively for 30 minutes i.e. Pump A works for 30 minutes and goes off then Pump B works for the next 30 minutes and goes off to let pump A work. This cycle continues until the water tank is full and both pumps will turn off, When the water level drops a certain level the two pumps starts to work alternatively. If any of the two pumps fails or put down for maintenance, the third pump will be replace the faulty one and start working alternatively with the other one. Here, any pump can act as standby and any other two can be put on to work alternatively. I’ll be highly thankful for the help.
Haffy Posts: 4 Rating: (0)
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12/5/2018 4:20 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/22/2024 Posts: 34442 Rating: (4294)	Hello Haffy, First of all, welcome to the forum. What kind of help do you expect? In the form of a finished program? How is the level monitoring (pump request and shutdown pump) realized? Digital? Analogous? If analog, which sensor data (output 0-10V or 0 / 4-20mA) and which measuring range?

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This contribution was helpful to 1 thankful Users mohammed_yaseen786

12/5/2018 8:37 PM	Rate (0)
Haffy Posts: 4 Rating: (0)	Thanks for the support. I need a finished or semi finished program which I can further develop to fully finished. I have all basic concepts but I'm not an expert. For level monitoring there is a float switch which signals about the filled and empty tank in discrete or digital form (on or off). I think there would be interlocking between the two operating pumps to make them run alternatively and also an interlocking for a standby and two working pumps.
Haffy Posts: 4 Rating: (0)
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12/5/2018 9:11 PM	Rate (3)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/22/2024 Posts: 34442 Rating: (4294)	In attachment a possible solution. The priority selection is made by a completed pumping process. If priority 3 was selected, next priority 1 will start again. Within a pumping process, every 30 minutes, the priority pump is switched between the prioritized pump and the next-priority pump. If one of the pumps is disturbed, the standby pump is automatically switched on. If 2 pumps are disturbed, the remaining pump runs through during the pumping process. Attachment Pump_control_0BA8.Standard.zip (2699 Downloads)

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12/6/2018 8:17 PM	Rate (0)
Haffy Posts: 4 Rating: (0)	Hi, thanks a lot for your help, I'm really great full to you. Can you please provide help for a little different scenario, which is: a pressure sensor operates the pump when pressure drops below 2bar and stops when pressure reaches 4bar (discrete output). Again similar setup: 3 pumps with 2 active and 1 standby. The sequence for the two active pumps is: At first turn, the 1st pump will operate and the second time the pressure switch signals pressure drop, the 2nd pump operates. On third time the pressure switch drops, the 1st pump operates and on 4th turn, the 2nd pump and so on. The 3rd pump will act as standby and replace any pump which is faulty or off for maintenance. The two active pumps do not run continuously, rather they are operated by pressure switch and operate alternatively. (Please also include how to get input from a 0-10 volt analog pressure sensor). You help will be a great kindness for me. Thanks in advance.
Haffy Posts: 4 Rating: (0)	Last edited by: Haffy at: 12/6/2018 8:18:26 PM Last edited by: Haffy at: 12/6/2018 8:21:10 PM
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This contribution was helpful to 1 thankful Users afzal38

12/6/2018 8:27 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/22/2024 Posts: 34442 Rating: (4294)	I'm sorry, but I will not create complete programs for all your scenarios. You can be glad that I have created this program completely according to your specifications.

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This contribution was helpful to 1 thankful Users Haffy

12/6/2018 10:30 PM	Rate (3)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/22/2024 Posts: 34442 Rating: (4294)	My heart is too soft ..... Here is the version with control over pressure. Attachment Pump_control_V2_0BA8.Standard.zip (2303 Downloads)

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This contribution was helpful to 1 thankful Users Cumhur Önbay

12/6/2018 11:00 PM	Rate (0)
Haffy Posts: 4 Rating: (0)	Thanks a lot for your great help. You are my boss now
Haffy Posts: 4 Rating: (0)
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This contribution was helpful to 1 thankful Users ixo65

12/7/2018 4:55 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/22/2024 Posts: 34442 Rating: (4294)	Hello Haffy, you're welcome....

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1/29/2020 3:41 PM	Rate (1)
Alfarah Posts: 1 Rating: (1)	thanks for your Help ;) i need this file but i cann't open it, do you know how can i open the is fIle ?? thank
Alfarah Posts: 1 Rating: (1)
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