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PID FB 41 for controlling flow of water.

12/23/2011 12:26 AM	Rate (0)
Martins_Eng Experienced Member Joined: 7/17/2010 Last visit: 7/21/2025 Posts: 188 Rating: (0)	Staff please read some articles about the Siemens Fb41 because I'll use in flow control, I'm testing the control loop and see that a very large inertia in the response of the system or whether it is working with a wide variation in set point, someone there can give a tip of how to regulate the function FB 41 for controlling flow of water.

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12/23/2011 9:24 AM	Rate (0)
Darius Platinum Member Joined: 9/28/2005 Last visit: 7/24/2025 Posts: 2957 Rating: (243)	Hello, Well regulator response inertia issues should not be related to FB41 itself, but it should be related to PID controlling theory I think. There you should find lots of information on how to make PID regulator more responsible. Some start info here: http://support.automation.siemens.com/WW/view/en/2362761
	Best regards, Darius
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12/23/2011 8:25 PM	Rate (1)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 8/31/2025 Posts: 6874 Rating: (1368)	Martins_Eng Staff please read some articles about the Siemens Fb41 because I'll use in flow control, I'm testing the control loop and see that a very large inertia in the response of the system or whether it is working with a wide variation in set point, someone there can give a tip of how to regulate the function FB 41 for controlling flow of water. Dear Martins_Eng, Check the points again here: Help with measurement and flow control hdhosseini Of course you need to tune the loop,You can set initial value selected for Ti and Td(and Tm_lag) or use tables for tuning provided in this book. Also you have option of using valuable information shared by Forum's members here(PID tunning.zip ). Best regards, Hamid Hosseini
	Demo Channel on Youtube
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This contribution was helpful to 1 thankful Users Alexandre Moleiro