Continuous Process: Tuning Loops

Describe tuning in relation to loop response. Describe the types of process upsets. Explain process delays. Describe the effects of gain reset and rate on response curves. Explain how to identify and assess asymmetry non-linearity and noise. Explain how to correct or reduce hysteresis stiction and noise. Distinguish between random tuning and systematic trial and error tuning. Describe the precautions necessary when tuning by trial and error. Explain the procedure for tuning using the Z-N open loop method. Explain the procedure for tuning using the Z-N closed loop or ultimate gain method. Describe how the auto-tune function tunes. Describe artificial intelligence (fuzzy logic) tuning features. Explain how to connect and run tuning programs. Describe the options tuning programs may provide.