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Best Power supply for Duet Wifi

Posted by minsk 
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minsk
Best Power supply for Duet Wifi
February 20, 2017 01:35PM
hey guys triyng to figure out the best power supply for the duet wifi running duet panel, 2 zed motors x motor y motor dual extrusion with a ir probe.
im running a sep 400 watt psu for my heat bed its 18x18

thanx
Minskmade
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ElmoC
Re: Best Power supply for Duet Wifi
February 20, 2017 01:55PM
Other than the dual extruder, I am running all that with an 8 amp 24 volt power supply. I measured the system using a bit more than 4 amps at the max. If running 12 volts, it would be a bit over 8 amps.
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minsk
Re: Best Power supply for Duet Wifi
February 20, 2017 02:12PM
kind of a newb on PSUs ...wont 24 volts blow up the board?...or does the board now how to break down the input power.
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ElmoC
Re: Best Power supply for Duet Wifi
February 20, 2017 02:15PM
The Duet can handle up to 36v if I remember correctly. I am running with 24v and it hasn't blown up yet. smiling smiley
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minsk
Re: Best Power supply for Duet Wifi
February 20, 2017 02:21PM
one more rookie question...does having more amps matter?you say you have a 24 v 8 amp psu...what if i had a 24v 12 am psu
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ElmoC
Re: Best Power supply for Duet Wifi
February 20, 2017 02:27PM
Anything over 6 amps should be fine. If you are currently running at 12v, you will have to change fans and the heater on the hot end.
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minsk
Re: Best Power supply for Duet Wifi
February 20, 2017 04:25PM
thank you elmo....searching for a Meanwell now smiling smiley
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ElmoC
Re: Best Power supply for Duet Wifi
February 20, 2017 04:41PM
I made a mistake with the amperage numbers. It is a 4 amp supply I am using and the system uses a bit over 2 amps.

Here is the power supply I am using...
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ElmoC
Re: Best Power supply for Duet Wifi
February 20, 2017 04:41PM
DROK AC to DC 24V Power Converter Module 4A 100W Switching Power Supply Board AC 85-265V Variable Input with Indicator Industrial Grade Switch Power Supply [www.amazon.com]
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dc42
Re: Best Power supply for Duet Wifi
February 20, 2017 05:19PM
Quote
minsk
hey guys triyng to figure out the best power supply for the duet wifi running duet panel, 2 zed motors x motor y motor dual extrusion with a ir probe.
im running a sep 400 watt psu for my heat bed its 18x18

thanx
Minskmade

Have you read [duet3d.com] ?


Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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minsk
Re: Best Power supply for Duet Wifi
February 20, 2017 08:03PM
poop...i have this one on the way

[www.amazon.com]
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ElmoC
Re: Best Power supply for Duet Wifi
February 20, 2017 09:03PM
Since you are running a DC heated bed, it would be fine. Better to have too much power available and not use it, than too little and need it.
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greenman100
Re: Best Power supply for Duet Wifi
February 20, 2017 09:33PM
The Duet Wifi cannot handle 50 amps, it can't realistically handle more than 25 amps at *most*. Heated bed channel is rated at 15A, each hotend at around 4A, stepper motors drivers total about 2A. (remember that a stepper motor driver in our applications that is set to 2 amps draws considerably less than 2 amps).

A 24v system would be better if attempting to maximize heated bed wattage.

Edited 2 time(s). Last edit at 02/20/2017 09:35PM by greenman100.
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ElmoC
Re: Best Power supply for Duet Wifi
February 20, 2017 09:35PM
As long as the power for the heated bed is controlled off the board (i.e. mechanical or solid state relay), and not through the on board mosfet, the 50A supply will be fine. The board itself will only use about 5A.
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minsk
Re: Best Power supply for Duet Wifi
February 20, 2017 09:49PM
my 18" heat bed has its own power supply. it draws 42 amps.

Edited 1 time(s). Last edit at 02/20/2017 09:50PM by minsk.
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ElmoC
Re: Best Power supply for Duet Wifi
February 20, 2017 09:51PM
With that 50A unit, it could do both the DuetWiFi and the heated bed so you could get rid of the extra one.
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minsk
Re: Best Power supply for Duet Wifi
February 20, 2017 10:03PM
even with an 18 inch bed that draws 42 amps?
thank you for all your help elmo.
im doing another smaller build for my nephew also with 20mm extrusion..so i can use the other psu...

this is the heatbed i ordered if anyone is interested in doing a large format build.


[www.ebay.com]

they have great customer support..asked them amillion qustions..they were quick to respnd

minskmade
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ElmoC
Re: Best Power supply for Duet Wifi
February 20, 2017 10:07PM
Given that at 24V, my board, with a 7" PanelDue only draws a bit over 2A, at 12V, your board will use about 4 or 5 amps. So it should work fine. 42 for the bed + 5 for the board = 47A. That is cutting into the buffer some, but if you use PID on the bed, the amount of current the bed uses will drop.
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minsk
Re: Best Power supply for Duet Wifi
February 21, 2017 08:08AM
whats a PID
smiling smiley
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ElmoC
Re: Best Power supply for Duet Wifi
February 21, 2017 08:12AM
[en.wikipedia.org]

[duet3d.com]
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minsk
Re: Best Power supply for Duet Wifi
February 21, 2017 08:24AM
i actually did search...so laymans term...it jsut chokes down the voltage?
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ElmoC
Re: Best Power supply for Duet Wifi
February 21, 2017 08:30AM
It switches the power on and off; the voltage stays the same. When the temperature drops below a certain point, power is turned on for a moment determined by the PID parameters.
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minsk
Re: Best Power supply for Duet Wifi
February 21, 2017 08:51AM
ahhhhhh....thank you so much for the explanation... got it
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