Disable Integral PID portion in TI545?

I'm trying unsuccessfully to control a steam regulator for drying cans with a TI545. I'm using WorkShop for programming. When I make a new loop the Integral is set to "+INF" in the loop settings and displays "1.#INF" in data view. Once an Integral value is set I can't figure out how to disable the I portion again. Does anyone know what I'm missing.

Also are there any simulators online that allow you to see the effects of changing the gain values on a virtual system?

I have not used your software, but can't you just put a value of 0 into the integerator I value? In a PID control system, once your error is calculated, based on your settings of the P,I & D those values are totaled together to give a output, if any of those have a value of 0 its as if that part does not exist. Hope this helps.

dbh6 said:

I have not used your software, but can't you just put a value of 0 into the integerator I value? In a PID control system, once your error is calculated, based on your settings of the P,I & D those values are totaled together to give a output, if any of those have a value of 0 its as if that part does not exist. Hope this helps.

Click to expand...

Thanks dbh6

I had tried entering a 0 in the data view which didn't work but realized that I hadn't tried entering a 0 into the PID settings until I read your post. Thankfully when I enter a 0 in the PID settings it correctly changes the Integral value to infinity.

Thanks again.

Your welcome

Another trick that sometimes works when any controller refuses to read zero, enter as small of a number as it will let you (i.e. 0.01 isn't zero but it may be "close enough" to be zero)