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controlled heated box

Posted by JustSumGuy 
controlled heated box
December 18, 2017 05:35PM
So I have this idea, might be too much to be worth it tho smiling smiley

I am building an enclosed HEVO and plan to install a heating system to maintain 50c-70c temp for ABS printing.
Duet Wifi btw...

The design is for a dual extruder single hotend setup. This will leave the second hotend PWM mosfet output and thermistor input unused.

I will be building for 24v so I was thinking if I used two 12v 50 watt heat elements in series then I should be able to control them from that mosfet output.

IF it can handle 100w that is.......

These are the heaters I am thinking about.
[www.aliexpress.com]

If this is too much for it I can go for a 100w 12v one and use a second PSU just for the heater setup like this one:

[www.aliexpress.com]
with
[www.aliexpress.com]

The second idea would leave the Duet out of the equation fully and was my first thought btw, the idea to use the Duet is something I just thought of...
A fan would be circulating the air thru the heater element in both ideas of course smiling smiley

Any input smiling smiley

Thanx

Edited 3 time(s). Last edit at 12/18/2017 05:38PM by JustSumGuy.
Re: controlled heated box
December 19, 2017 01:05AM
How about a separate PSU for the heater(s) and use the second hot end mosfet to control a DC to DC SSR. That way you can also use the thermister port for the second hot end and have full duet control.
Re: controlled heated box
December 19, 2017 01:57AM
Quote
jbolt
How about a separate PSU for the heater(s) and use the second hot end mosfet to control a DC to DC SSR. That way you can also use the thermister port for the second hot end and have full duet control.

but I have no intention of having a second hot end.

as far as an SSR and secondary PSU yes thats also doable, not needed if the one on board can handle 100 watt tho....
Re: controlled heated box
December 19, 2017 09:08AM
Quote
JustSumGuy
So I have this idea, might be too much to be worth it tho smiling smiley

I am building an enclosed HEVO and plan to install a heating system to maintain 50c-70c temp for ABS printing.
Duet Wifi btw...

The design is for a dual extruder single hotend setup. This will leave the second hotend PWM mosfet output and thermistor input unused.

I will be building for 24v so I was thinking if I used two 12v 50 watt heat elements in series then I should be able to control them from that mosfet output.

IF it can handle 100w that is.......

These are the heaters I am thinking about.
[www.aliexpress.com]

Yes that sounds feasible, then you can use the M141 H2 command to configure that heater as a chamber heater.


Delta printer calibration calculator, mini IR Z probe, and colour touch screen control panel: [escher3d.com]

Large delta printer, and other 3D printer blog postings: [miscsolutions.wordpress.com]

Disclosure: I have a financial interest in sales of the Panel Due, Mini IR height sensor, and Duet WiFi/Duet Ethernet [www.duet3d.com].
Re: controlled heated box
December 20, 2017 12:21PM
Quote
dc42
Quote
JustSumGuy
So I have this idea, might be too much to be worth it tho smiling smiley

I am building an enclosed HEVO and plan to install a heating system to maintain 50c-70c temp for ABS printing.
Duet Wifi btw...

The design is for a dual extruder single hotend setup. This will leave the second hotend PWM mosfet output and thermistor input unused.

I will be building for 24v so I was thinking if I used two 12v 50 watt heat elements in series then I should be able to control them from that mosfet output.

IF it can handle 100w that is.......

These are the heaters I am thinking about.
[www.aliexpress.com]

Yes that sounds feasible, then you can use the M141 H2 command to configure that heater as a chamber heater.

Just to confirm pls DC42, that mosfet can handle 100w ? I want to be sure as hotends are 40w and sometimes 50w I don't want to push this mosfet too hard.

Thanx
Re: controlled heated box
December 20, 2017 03:42PM
The limiting component is the terminal block, not the mosfet. I forget its rating, but it should be good to at least 6A, which is 120W @ 24V.


Delta printer calibration calculator, mini IR Z probe, and colour touch screen control panel: [escher3d.com]

Large delta printer, and other 3D printer blog postings: [miscsolutions.wordpress.com]

Disclosure: I have a financial interest in sales of the Panel Due, Mini IR height sensor, and Duet WiFi/Duet Ethernet [www.duet3d.com].
Re: controlled heated box
December 20, 2017 04:35PM
Quote
dc42
The limiting component is the terminal block, not the mosfet. I forget its rating, but it should be good to at least 6A, which is 120W @ 24V.

ok, that sounds like a way to go then smiling smiley

tqvm
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