For various reasons the error cannot be eliminated quickly in many situations and , therefore, if the time interval is long enough, larger and ... This condition is known as the reset wind up or integral wind up and is found to occur during manual operational change like shut down, start-up, changeover, etc. ... The anti- reset wind-up relay can be used in such a case to throttle and operate at a specified pressure. ... One other technique, used often in electronic controller, is suggested in Fig.
|Title||:||Principles of Process Control,2e|
|Publisher||:||Tata McGraw-Hill Education - 2001-10-01|