Hi There
I am having some problems in stroking the valves from the pid controller in plc. I am using Controllogix platform. None of the valves are having any positioners on them (simple I/P, and they are fairly big size pressure/temperature control valves). The problem i am experiencing is , none of these valves will actually start to move untill PID output reaches around 35% to 45%. Once the valves are moved from the fully closed position, then they seem to follow the pid output without any problems. But just at the starting they are late to react. Is there anyway i can achieve the solution to this problem through my logic? I will appreciate your help and time. Thanks in advance
Regards
I am having some problems in stroking the valves from the pid controller in plc. I am using Controllogix platform. None of the valves are having any positioners on them (simple I/P, and they are fairly big size pressure/temperature control valves). The problem i am experiencing is , none of these valves will actually start to move untill PID output reaches around 35% to 45%. Once the valves are moved from the fully closed position, then they seem to follow the pid output without any problems. But just at the starting they are late to react. Is there anyway i can achieve the solution to this problem through my logic? I will appreciate your help and time. Thanks in advance
Regards