In the DELTA V system, the automatic operation of the temperature control valve results in large fluctuations; how should the PID be adjusted?
Thread Content
For the DELTA V system, the automatic operation of the temperature control valve results in large fluctuations; how should the PID be adjusted? Seeking advice from experts
To adjust the PID parameters properly, one must first understand the function of PID, followed by the characteristics of the process variable in question; for example, since temperature should not change suddenly, it is necessary to increase the differential term (D). Additionally, it is important to have some understanding of the control valves, as well as the performance of the processes and equipment. PID adjustments should not be made rashly to avoid safety incidents.
Are it the large temperature fluctuations, or the large valve fluctuations?