Apc Back-ups Ns 1050 Manual
5/9/2008 6:18 AM I have a Back-UPS NS 1050 unit that is about 3 years old. I had two computers and one monitor plugged into the unit, and it worked fine for over a year. Since neither computer uses a lot of power, this seemed like a fine solution.
Total power draw was slightly less than half of the total power output capability. About a week ago, the other computer would turn off whenever I switch the other computer on. Now, the overload light has come on, with the solid beep alarm (continuous tone). I removed all of the equipment plugged into the unit, restarted the unit, and the overload alarm still comes back on.
Apc Back Ups Ns 1250 Manual View documentation for the APC BACK-UPS 1200VA 120V, including Includes: CD with software, Cord management straps, Telephone Cable, USB.
I tried pressing the circuit breaker switch at the back of the unit, but it seems to be all the way in, so I don't think that ever tripped. The PowerChute software reports that the current load on battery backup is 0 watts (nothing is currently plugged in). The unit looks identical to the Back-UPS 1200VA. It is a tall thin white box with the battery located at the bottom front of the unit. I disconnected and removed the battery to check out which type it is, and as far as I can tell, it is a RBC32 battery. I purchased this unit from Costco about three years ago, so I think it is a special model made for the big box retailers.
I cannot find the unit listed at the APC website. Is this a problem that can be fixed by replacing the battery?
I don't know if something else is wrong with the unit, since the 'Overload' light is on, but the 'Replace Battery' light has not turned on. Once again, there is nothing plugged into the back of the unit, but the overload light comes on and the unit emits a continuous tone. If it fix is to just replace the battery, then I would prefer to do that.
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However, I am a little worried about replacing the battery and still being stuck with a dead unit. 5/9/2008 11:02 AM (in response to Solomon) SM, In this instance, do not replace the battery. It's possible that the load sensor within the UPS has failed, or another electrical component that controls that feature has failed.
To test for sure: 1. Unplug the UPS from the wall (make sure the UPS is off). Depress the Power Button. You will get an initail beep (similar to what you would get when normally powering it off), continue to hold the Power buttom. Release the Power Button DURING the second longer beep, and that will force the UPS on battery. If the UPS immediately goes into Overload, there's a problem with the UPS that no RBC will fix.
4/1/2010 5:28 PM Greetings, I purchased the Back-UPS NS 1250 (model # BN1250G) from Sams Club back in October 2009. I had tried to install PowerChute Personal 2.2, but upon launch, I would be prompted with 'APC PowerChute Personal Edition has stopped working'. The software and driver installed properly. The system tray icon was working as well.
If I went to Device Manager and disabled the APC Battery, the system tray icon would notify me that it can't communicate with the UPS. But I could never get PowerChute to launch and was unable to find any solutions here or throughout the web, so I resigned to uninstalling PowerChute and used Windows' native 'battery management' and the OSD on the unit. From then until now, there were a few power outages and the BN1250G kept both the laptop and desktop running.
This morning, I woke up and noticed my alarm clock flashing 12:00, so I went to check on my systems. Surprisingly, the laptop that is connected to the UPS was still up and running, but the desktop had shut down. I found that the power outage this morning was short and lasted only a few minutes, so both systems should have remained up, but what was odd to me was that only one of the two machines shut down.
So I did a manual test once both systems were online and idle at desktop. I pulled the plug from the wall and while the laptop continued without a hitch, the desktop machine shut down hard, instantly. So that's part 1 of my question. Why is only one machine shutting off? Both machines power state have survived outages while attached to this unit before, so what's changed? At the time I pulled the plug, with both machines idle, the total draw of power was 234W. This is nowhere near overloaded for my particular unit and as well, it shows also on the OSD that I'd have 15 minutes of runtime.
Apc Backup Ns 1250 Manual
When the plug is pulled and the desktop instantly shuts down, that time changes to over 60 minutes, as now it is only powering the laptop. I thought maybe I would try redownloading PowerChute and try again, but I am met with the same 'stopped working' error.
For what it's worth, I also tried unplugging the unit from the wall after PowerChute was installed, thinking maybe the APC driver would somehow handle or log this event better than Windows seemed to be doing, but it shuts down hard just the same. With no error logging from PowerChute and no other means to troubleshoot, I'm at a loss now. Question #2 is Why is PowerChute not loading?
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If there is any other detail anyone needs from me, I'm more than happy to provide as much as I can. Thanks for your time. 4/2/2010 5:54 PM (in response to Richard) The UPS itself is operating just fine when you unplug it from the wall, correct? What LEDs/beeping patterns do you notice when you pull the plug? I haven't seen that particular issue with PowerChute before so I'm not sure what to tell you in that regard.
But your computer turning off immediately has nothing to do with the software. What's more likely is your computer's power supply doesn't like either the transfer time of the UPS switching from utility to battery power or the type of power output when the unit is on battery (step-approximated sine wave vs.
Pure sine wave of typical utility power). Or a combination of the two. Over time, your computer's power supply 'breaks in' from use, and sometimes as they age they're less resilient in terms of these two variables. I've seen the same issue on another system, an HP computer, which worked fine for about a year or so on a Back-UPS but now powers off as soon as the UPS is unplugged from the wall. Of course the laptop is fine because it has its own battery anyway. Assuming we figure out how to get the software working, you could try adjusting the sensitivity of the UPS - higher sensitivities have shorter transfer times - but it's also possible you may need a pure sine wave output when the unit is on battery, which is only available on the Smart-UPS models It seems this is becoming more and more common with newer, 'better' power supplies that have higher demands.