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2/17/2010 5:19 PM | |
Joined: 3/14/2008 Last visit: 9/23/2024 Posts: 2096 Rating: (937) |
Hello James Bond, The flow and water level should be used in a cascade function. This means that you have two PID controllers which function in serial mode. The waterlevel should be the master controller and the flow is the slave controller. What means is that the output (LMN) of the master is the external input for the slave. You can set up the auto mode by setting AUT_L. Hope this get helps to get you started... And no pressure control? Isn't there a analog input for the steampressure and steamtemperature? Because then you have another control function. You can regulate the watertemperature by adjusting the pressure inside the boiler-> higher the pressure = the higher the watertemperature must be to create steam. |
If I could help you, you can use the RATE button. Thank you. |
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2/25/2010 11:43 AM | |
Posts: 34 Rating: (0) |
Dear All, Is there any specific FCs or FBs for 3 element water level control or any sample program for the same. With Regards, Rajesh Gupta. |
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