1 Topic by IronMan

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Topic: UPS to Run Solidoodle During Power Loss

Tried to search this, but did not come up with anything...

Is anyone running an uninterruptible power supply to their setup?  I was looking into getting one and wondered which VA or Watt ratings are necessary for running the machine for say, an hour off the grid?  Just need to power the 'Doodle...the laptop will take care of itself...

SD2 - Stock - Enclosure - Heated Bed - Glass Plate - Auto Fire Extinguisher
Ord Bot Hadron - RAMPS 1.4 - Bulldog XL - E3D v6 - 10" x 10" PCB Heated Build w/SSR - Glass Plate
Thanks for All of Your Help!

2 Reply by ronsii

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Re: UPS to Run Solidoodle During Power Loss

I have had one of mine tied into a 12 volt car battery just as a test on a long print I was doing a few months ago, this was done mainly as an experiment because we were having lots of power problems and brownouts. It worked fine when the power flickered a few times, if I were going to make something permanent it would have a regulated output and a higher charge voltage just because smile
If you go with a UPS I would go with something at least a couple times more wattage than needed (SD power brick says it needs 300 watts) now as for the longevity of the batts they put in the UPS's they generally run about 10 mins. at rated load... So you can either hook up a bigger batt to it or buy a much bigger UPS if you want it to last an hour.

3 Reply by 2n2r5

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Re: UPS to Run Solidoodle During Power Loss

I would guess the average power draw wouldn't be much more than 100 watts. So if you get 1000VA it should cover the printer for an hour.

http://www.apc.com/tools/ups_selector/US/en/home/load

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Glass bed with QU-BD heat pad upgrade, threadless ballscrew w/ 8mm smooth rod, spectra line belt replacement, lawsy MK5 extruder, Lawsy replacement carriage, E3D hotend, Ramps 1.4 w/ reprap discount controller, DRV8825 drivers, 12v 30A PS, Acrylic case, Overkill Y-idlers, Filament alarm, Extruder fan + more.

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4 Reply by ronsii

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Re: UPS to Run Solidoodle During Power Loss

Yeah, 2n2 is right I think mine draw around 120 watts when running... don't know why I thought the brick was 300 ??? as for the UPS's their batts start having diminished capacity after about 6 months to a year I've gone through a few of the APC 650's

5 Reply by IronMan

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Re: UPS to Run Solidoodle During Power Loss

Thanks everyone!

SD2 - Stock - Enclosure - Heated Bed - Glass Plate - Auto Fire Extinguisher
Ord Bot Hadron - RAMPS 1.4 - Bulldog XL - E3D v6 - 10" x 10" PCB Heated Build w/SSR - Glass Plate
Thanks for All of Your Help!

6 Reply by dubbsd

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Re: UPS to Run Solidoodle During Power Loss

I have an APC back-ups 1500 and it has always
lasted until the power came back on.

Ultimaker S3.

7 Reply by pirvan

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Re: UPS to Run Solidoodle During Power Loss

I have an APC  Back-Ups XS 1300, with my PC, NAS, modem, LAN switch and a few other small things are plugged in it, and the normal draw is about 195-205W.  At that load, the UPS built-in display says the battery time is about 25 minutes.

I once tested the SD3 draw using a Kill-a-Watt meter, and the average draw while working is between 135-145W.  When first heating up the bed and extruder, I've seen loads as high as 180W.  But once they're hot, the printer seems to only pulse the current to keep them hot, so it doesn't draw as much.

Anyway, I think that a 1300VA  UPS like mine would probably give me about 35-45 minutes runtime for the printer alone.

To print or, 3D print, that is the question...
SD3 printer w/too many mods,  Printrbot Simple Maker Ed.,  FormLabs Form 1+
AnyCubic Photon, Shining 3D EinScan-S & Atlas 3D scanners...
...and too much time on my hands.