ironmountainbrew
Active Member
PID Not Turning off Heating Element - Need Help
What am I doing wrong? Bad SSR, Bad PID or Bad Process?
I just got my control panel up and running, but I'm having some problems with PID. It seems to keep heating regardless of the Set Value.
On brew day I set the PID to 160 F, but the temp kept rising. I ended up turning it off at around 185 F and letting it cool back down.
I did this one more time immediately after brewing and verified that the PID was not in manual mode. The SSR and Out light on the PID where synched and going on and off pretty frequently.
After brew day I made several attempts at running auto tune. I first went with Kal's recommendations of setting the temp for 154 and starting the auto tune at around 144.
During auto tune it sounds like the element never turns off. I ended up bailing when it got close to boil temps. I repeated this two additional times, both times at lower set value temps (120 F then 100 F). Both times the element sounded like it was on the entire time and I ended up stopping the auto tune just before boil.
Here's my setup:
Auber SYL-2352 PID controllers
Settings: Sn: = 21; FILT: = 5; At:=2; All other parameters set to default (verified with manual)
15 gallon kettle recirculating 7 gallons of water with lid on.
Currently, I don't have my HERMS coil installed so I am just recirculating by running out of the ball valve drain through the pump and back through the top inlet installed on my kettle lid. The temp probe is mounted on the side of the T on the outlet ball valve.
(I realize I will need to retune my setup once the HERMS coil is installed, but for now I would like to be able to set my strike and sparge water temp and not have to worry about overshooting.)
I should mention that the PV is correct and I've verified that the PID is Fahrenheit.
Any suggestions would be greatly appreciated.
Sincerely,
Ryan...
What am I doing wrong? Bad SSR, Bad PID or Bad Process?
I just got my control panel up and running, but I'm having some problems with PID. It seems to keep heating regardless of the Set Value.
On brew day I set the PID to 160 F, but the temp kept rising. I ended up turning it off at around 185 F and letting it cool back down.
I did this one more time immediately after brewing and verified that the PID was not in manual mode. The SSR and Out light on the PID where synched and going on and off pretty frequently.
After brew day I made several attempts at running auto tune. I first went with Kal's recommendations of setting the temp for 154 and starting the auto tune at around 144.
During auto tune it sounds like the element never turns off. I ended up bailing when it got close to boil temps. I repeated this two additional times, both times at lower set value temps (120 F then 100 F). Both times the element sounded like it was on the entire time and I ended up stopping the auto tune just before boil.
Here's my setup:
Auber SYL-2352 PID controllers
Settings: Sn: = 21; FILT: = 5; At:=2; All other parameters set to default (verified with manual)
15 gallon kettle recirculating 7 gallons of water with lid on.
Currently, I don't have my HERMS coil installed so I am just recirculating by running out of the ball valve drain through the pump and back through the top inlet installed on my kettle lid. The temp probe is mounted on the side of the T on the outlet ball valve.
(I realize I will need to retune my setup once the HERMS coil is installed, but for now I would like to be able to set my strike and sparge water temp and not have to worry about overshooting.)
I should mention that the PV is correct and I've verified that the PID is Fahrenheit.
Any suggestions would be greatly appreciated.
Sincerely,
Ryan...