11/11/2022 5:50 PM | |
Joined: 5/6/2010 Last visit: 8/31/2024 Posts: 1978 Rating:
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Hello s27, the secret is you need a negative value of "P" because you have a inverted control of your fan. I don't know how you parameterize your V20. If a input 0 V= 20 Hz then you should set your LLIM of your PID to 0.0, otherwise you must set this value to 40.0. The HLIM should be at 100.0. I would scale the input, but it's easier to work with real values as with the 13824. Please have alook at the follow manual PID Control with PID_Compact for SIMATIC S7-1200/S7-1500 regards CaOd |
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