PID?
PID?
(OP)
Hello,
I am working on a control project that will need temperature control and a recipe. The control on the temperature does not need to be really tight as we are going to boil mixture of mostly water for 3minutes at a time. We have a steam boiler and an air actuated pressure valve(4-20mA) to a jacketed 200 gal mixing tank. Also I have an RTD into a Micrologix1500 w/RTD I/O card for my temperature readings. I'm using RSLogix500 and have just recently been reading about the PID instruction. My main concerns are finding the correct PID settings to start testing from, and then using the instruction in my program correctly as I would like to tie the PID setting to a certain Recipe selection.
Anyone who could give pointers or tips on using PID or RCP I would appreciate the ideas. There seems to be a lot of theory about PID to read I'd like to see some examples if anybody has some to share. Also I'm using a 10" EZTouch color panel for the HMI. Anybody else out there using this type? Thank you.
I am working on a control project that will need temperature control and a recipe. The control on the temperature does not need to be really tight as we are going to boil mixture of mostly water for 3minutes at a time. We have a steam boiler and an air actuated pressure valve(4-20mA) to a jacketed 200 gal mixing tank. Also I have an RTD into a Micrologix1500 w/RTD I/O card for my temperature readings. I'm using RSLogix500 and have just recently been reading about the PID instruction. My main concerns are finding the correct PID settings to start testing from, and then using the instruction in my program correctly as I would like to tie the PID setting to a certain Recipe selection.
Anyone who could give pointers or tips on using PID or RCP I would appreciate the ideas. There seems to be a lot of theory about PID to read I'd like to see some examples if anybody has some to share. Also I'm using a 10" EZTouch color panel for the HMI. Anybody else out there using this type? Thank you.





RE: PID?
RE: PID?
By the way, do you have any controls engineering experience? If not, you may want to consult an expert, or at least find someone at your company with experience to help you. Control engineering requires a wide range of knowledge drawn from electrical, mechanical, and chemical engineering, with networking and data management thrown in for good measure. It's not just about connecting equipment together with wiring and piping to make a system - the system has to work according to specifications, as well as allow interfacing for control and data viewing.
Good luck.
xnuke
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: PID?
RE: PID?
Best regards, PLCSAVVY
RE: PID?
Luck.
RE: PID?
only in BASIC -- to gain a more perfect understanding.
<nbucska@pcperipherals.com>
RE: PID?
only in BASIC -- to gain a more perfect understanding.
PLC is not the easiest to program more complex algorithms
in -- wouldn't be bang-bang control good enough ?
<nbucska@pcperipherals.com>