heated enclosure continued

CarlBosson

Re: controlling a heated fan in my enclosuer

Phaedrux gave me some advice more than a year ago on this topic. Thank you for your help but I had to put this on hold for a while.. I was unsure how to contact him directly. So I decided to repost.

To recap we have two 110 Vac fans with heating elements to heat our enclosure. The plan is to use an SSR connected to the E1 heater output on the duet board. I have a thermistor connected to E1 sensor port on the duet board. The thermistor is hanging inside the enclosure. The idea was the use this control loop to control the temperature inside the enclosure. Once this is working perform an auto tune as sugested by Phaedrux.

Using some of the information he sent me I pieced this togather. Can you tell me if it is correct? Is there a better way to do this?

M308 S2 P”E1” Y”thermistor” T100000 B4138 ; configure sensor 2 as a thermistor on pin E1
M950 H2 C”E1” T2 ; create chamber heater output on E1 and map it to sensor 2
M307 H2 B0 S1.00 ; disable bang-bang mode for the chamber heater and set PWM limit
M141 E1 ; map chamber to E1
M143 H2 S100 ; set temperature limit for heater E1 to 100c

I am way out of my comfort zone here Thanks for any help you can offer.

Phaedrux

This is what the config tool generates for a DuetWifi and RRF3 for a chamber heater with fan2 assigned to that heater.

M308 S2 P"e1temp" Y"thermistor" T100000 B3950          ; configure sensor 2 as thermistor on pin e1temp
M950 H2 C"e1heat" T2                                   ; create chamber heater output on e1heat and map it to sensor 2
M307 H2 B0 S1.00                                       ; disable bang-bang mode for the chamber heater and set PWM limit
M141 H2                                                ; map chamber to heater 2
M143 H2 S150                                           ; set temperature limit for heater 2 to 150C

; Fans
M950 F2 C"fan2" Q500                                   ; create fan 2 on pin fan2 and set its frequency
M106 P2 S1 H2 T45                                      ; set fan 2 value. Thermostatic control is turned on

CarlBosson

@phaedrux said in heated enclosure continued:

This is what the config tool generates for a DuetWifi and RRF3 for a chamber heater with fan2 assigned to that heater.

Phaedrux, Thank you for your help. Config tool? Is this something that is already onboard in the duetwifi UI? Is there a document or video that explains more about this? Have a great day.

Phaedrux

https://configtool.reprapfirmware.org/Start