SoliForum - 3D Printing Community — UPS to Run Solidoodle During Power Loss

Re: UPS to Run Solidoodle During Power Loss

2013-09-02T21:15:51Z

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.

Re: UPS to Run Solidoodle During Power Loss

2013-09-01T21:24:06Z

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

Re: UPS to Run Solidoodle During Power Loss

2013-09-01T21:17:04Z

Thanks everyone!

Re: UPS to Run Solidoodle During Power Loss

2013-09-01T21:12:51Z

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

Re: UPS to Run Solidoodle During Power Loss

2013-09-01T20:56:53Z

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

Re: UPS to Run Solidoodle During Power Loss

2013-09-01T20:52:23Z

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
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.

UPS to Run Solidoodle During Power Loss

2013-09-01T19:46:06Z

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...