Gary,
Interesting problem.
a) I think that your UPS is too small (in capacity and available
wattage) for everything you have plugged into it. I'll assume your ups
is the ES350G. It is only capable of 200W (?sustained?). Certainly your
PC does not idle at 200W; still, when the printer comes on, the ups may
not be able to react to the large load spike of the printer and still
supply enough oomph for its' attached devices (PC, speakers, switches).
I have noticed that my two oldest PCs that use "last generation" PSU's
still record 120W-133W on their Back-Ups 1500LCD on startup. Both PCs
typically idle at the 100W-115W level.
By contrast, my three C2D machines w/new 600W psus rarely exceed 70W on
startup, and, frequently idle in the 30W-40W range. These new "+80" psus
are much more efficient to my view.
b) Your printer specs at 20W (sleep), 85W (awake), and, 510W (printing).
That 510W is ~1/3 of the total available wattage of the duplex outlet
(1800W). I'd put the printer on another power outlet (fused line) than
the ups for starters....as a test.
JMHO. YMMV.
Best,
Duncan
On 02/14/2010 11:07, Hunter, Gary wrote:
Hi,
I have a color laser printer (Brother HL-4040CDN) and an APC BACK_UPS
ES 350 plugged into the same power outlet. A PC is hung off of the
UPS along with some speakers, a harddrive and two switches. The PC is
nothing special and has 450w PSU in it (can't remember the make but
can look it up if it's important).
So the problem is when the printer comes out of sleep mode it
temporarily draws a lot more current and this causes the PC to shut
down. I am assuming I have a problem with the UPS maybe a bad
battery, but the UPS is not beeping or indicating it is bad in
anyway. Am I correct in thinking the UPS is bad, or could it be a
combination of a bad power outlet and a bad UPS? I am thinking when
there is the increased current draw it delivers all the power to the
top socket and the bottom doesn't get any.
Any help would be appreciated.
Thanks
Gary Hunter Enterpise Architect Travelport GDS T: (+1) 303 - 397 -
5035 M:(+1) 720 - 231 - 0965 E: [email protected] SITA:
HDQOK1G Travelport Product Development Center 6901 S Havana St
Centennial, CO 80112
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