Hi everyone,
I have a project start up coming up in the next few weeks that I have 4 PID routines in my program. I have never used PID in a program before so I just recently took the PID class that Rockwell offers and think I have a OK idea of how to use the PIDE instruction. I was just wondering if the regular PID would be a simpler solution than the PIDE. The PIDE seems to by a pretty high powered Function but I wont be using 10% of what is offers.
Here is how I want the system to work: I have a PRESSURE_IN tag to represent the line pressure. If PRESSURE_IN is above the HMI_SETPOINT then I want the VFD_SPEED_OUT (PID(E) Output) to start heading towards 100% output or 60hz. As the PRESSURE_IN gets closer to the HMI_SETPOINT I want the PID(E) to regulate the output to keep the PRESSURE_IN at the HMI_SETPONT. When the PRESSURE_IN is less than the HMI_SETPOINT I want the PID(E) to head towards 0% output or 20hz.
So based on how this will work which way would you recommend going? Is the complexity of the PIDE worth it?
Give me your thoughts.
I have a project start up coming up in the next few weeks that I have 4 PID routines in my program. I have never used PID in a program before so I just recently took the PID class that Rockwell offers and think I have a OK idea of how to use the PIDE instruction. I was just wondering if the regular PID would be a simpler solution than the PIDE. The PIDE seems to by a pretty high powered Function but I wont be using 10% of what is offers.
Here is how I want the system to work: I have a PRESSURE_IN tag to represent the line pressure. If PRESSURE_IN is above the HMI_SETPOINT then I want the VFD_SPEED_OUT (PID(E) Output) to start heading towards 100% output or 60hz. As the PRESSURE_IN gets closer to the HMI_SETPOINT I want the PID(E) to regulate the output to keep the PRESSURE_IN at the HMI_SETPONT. When the PRESSURE_IN is less than the HMI_SETPOINT I want the PID(E) to head towards 0% output or 20hz.
So based on how this will work which way would you recommend going? Is the complexity of the PIDE worth it?
Give me your thoughts.