"MarkMc" schreef in bericht news: firstname.lastname@example.org... Hi I'm not an engineer or anything like that, but I have an OMRON E5CN temperature controller that I use for controlling fermentation temperature for my homebrew beer.
I've managed to set it up and calibrate it, and it's been working a treat for some time now.
However, I would ideally like to keep fermentation in a range, say between 15°C and 18°C, i.e the heater comes on to keep the temp above
15°C and the cooler comes on to keep the temperature below 18°C.
Is this possible with the E5CN model?
Mark, The E5CN-R2T can do exactly the function you want. Use following settings:
-In the "initial setting level" you set the controller in ON/OFF and you choose also for "H-C" , wich means heating-cooling.
- In the "Advanced function setting level" you for alarm1 assignment Cool (C-o).
-In the adjustment level you set the cooling deadband (C-db) to 0, the hysteresis (HYS) to 3°C and the cooling hysteresis (CHYS) to 0.1°C. ( lower is not possible)
-You choose you setpoint as 18°C. The heating must be connected to output 1 ( connections 1&2) , and the cooling to connections 7-8. This way you are using the alarm1 output as cooling output.
With this configuration the controller heating ourput will go on between
15°C and 18°C. The cooling output will go on above 18°C.
Remark: to go in the "advanced function setting level" you must set the value -169 when you encoutner the word AMOV in the Initial setting level. When you don't see the word AMOV this means that the protection level is too high. Set the values in the protection level to "0" or OFF.
Mail me if you need more info.