3/27/2012 11:06 AM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating:
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Hello , For me "solenoid valves" are binary actuators and used for safety reasons besides "positioners". If you are using positioners solely , you have option of using PID algorithm and in case of flow, FB41 is recommended. See the samples here: PID Control Package - FB41 Samples FB58 is optimized for temperature loops. Best regards, Hamid Hosseini |
3/28/2012 11:48 AM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating:
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Hello , This is simply possible to implement by FB41. Put the control loop in manual mode on 30% for 30 minutes.It can be done by utilizing a loop enable and a timer output to change from manual to automatic mode. Please note, changeover from manual to automatic is not always bumpless.For more information about this refer here:Bumpless PID For more control function options refer here: http://support.automation.siemens.com/WW/view/en/1137082 Best regards, Hamid Hosseini |
3/29/2012 12:16 PM | |
Posts: 4 Rating:
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Dear hdhosseini, I will read it through first. Thank you. Thanks and best regards, Thura |
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