how can i specific the p.i. value in pump application with ACS580 ( facing high overshooting , oscillating)
i am using ACS580 inverter with booster pump application but the response of the pid is bad always oscillating and overshooting
for example if the setpoint is 4 bar the drive stop while the pressure becomes 6 bar (low response to stop) and at working the water output always decrease and increase not stable also the speed playing
so what is the practical procedure to determine the P value and I value exactly to solve this problem
Asked 6 months ago
Answers
0
Dear friend,
there is no single and simple way to determine how to perform the PI calibration in a process, and this is because there is no one process unique or the same as another. Each has its own characteristics and requires a careful evaluation, preferably a graphic one.
Given that you must have correctly programmed your drive, remember to always try to make small changes to the parameters of group 40.32 - 40.33 and if necessary, even 40.34.
Activate the monitor and observe very carefully how the quantities involved - for example the number of RPM of the pump and the PID feedback signal - behave with each variation of the parameters I have indicated above. If you have patience and intuition, you will be able to stabilize your process.
Remember that a good theoretical basis - for example searching also on the web the topic "PID regulation" will allow you to better understand the principles of regulation in your drive.
Hope this help you
BR
Flavio
there is no single and simple way to determine how to perform the PI calibration in a process, and this is because there is no one process unique or the same as another. Each has its own characteristics and requires a careful evaluation, preferably a graphic one.
Given that you must have correctly programmed your drive, remember to always try to make small changes to the parameters of group 40.32 - 40.33 and if necessary, even 40.34.
Activate the monitor and observe very carefully how the quantities involved - for example the number of RPM of the pump and the PID feedback signal - behave with each variation of the parameters I have indicated above. If you have patience and intuition, you will be able to stabilize your process.
Remember that a good theoretical basis - for example searching also on the web the topic "PID regulation" will allow you to better understand the principles of regulation in your drive.
Hope this help you
BR
Flavio
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