Showing posts with label Power. Show all posts
Showing posts with label Power. Show all posts

Help me disable my UPS alarms! Tripp-Lite OMNIVS1000

I have two Tripp-Lite OMNIVS1000 Uninterrupted Power Supplies (UPSs) in my house. As much as I love the fact that they condition the power for my electronics, regulate voltage swings, and provide backup power for short outages (which I believe extends the life of my electronics, see Protecting Your Electronic Hardware from the Power Company)...one thing drives me crazy. The "I am on battery power" audible alarm. See the video below.


It beeps with this piercing three ring tone every 10 seconds. This can be disabled manually by pressing one of the buttons. So, every time the power shuts off I have to jump (usually out of bed in the middle of the night) and run to shut the alarm off. But in the dark with the power off, it is easy to push the wrong button (there are two) and shut the unit off, which defeats the main purpose of having it for battery backup. If I manage to hit the right button and only mute it, it will finally, when the battery is nearly dead, generate another piercing solid tone. However this one cannot be disabled without shutting the unit completely down, or waiting it out until it shuts itself off. So when this happens in the middle of the night I need to get up and disable the audible alarm and if the outage persists, shut them down before the batteries go dead. It is a very manually intensive process, and I have two of them. You can imagine what happens when this occurs when I am out and my mom or a babysitter is home with the kids. I feel weird leaving an operating manual for my house for these unlikely contingencies, but it has happened before and I kind of feel bad not covering all scenarios.

I looked online for replacement UPS units but worry that they will have the same, or other, or more issues, and the ones I have actually do what I need them to do, I just don't want the noise. Even if I got another UPS, I would still probably use these units to backup additional devices, which would defeat the purpose of "replacing" them.

So in order to make an outage more bearable for all, I attempted to get this noise disabled. I was unable to find anything online to help me. If you are reading this, that is probably how you found this page. Hopefully I can at least save you the trouble of doing the same thing I did. So, I (safely) opened one of them up hoping to find a speaker that I could effortlessly unplug. I was unsuccessful. The control board is a single printed circuit board, with nothing that stands out to me as a tone generator, speaker, or noise maker. In addition all of the components are hard soldered to the board. Even when experimenting up close I can't tell where the noise was coming from. I am also unsure if I want to permanently disable the alarm or worse yet, break the unit by doing so, but at this point I am willing to try... if I only knew which doo-dad was the speaker module. Any guesses? I am including a picture below. I think it might be the white box at the top.

My next step might be flipping through my Digi-Key electrical parts catalog to see what a tone generator might look like.


One other gripe I have about this UPS is that it does not turn itself back on when power is restored, and I cannot automatically reboot my home server when the power comes back on (which would require a UPS reboot AND a PC reboot trigger). So whenever there is a >30 minute power outage, I need to push two buttons to reboot; the UPS restart and the computer restart,  which is extremely inconvenient if I am not home and trying to access home server resources. So I must choose between having a battery backup or having automatic reboot of my network when power is restored. If you have any thoughts or ideas please leave a comment below. Stay tuned and I will post an update as I learn more!

UPDATE: Disable via software! See below:

"Anonymous" left a link to LINK to an article that describes how to turn off the alarm via the Tripp Light software in "business mode". It seems to be effective. 

Road Warriors: Keeping USB and 120VAC Devices Powered On

If you spend a lot of time in the car and need to keep your devices powered up, or even to have as a "just-in-case" item to keep in your car, you will need a 12VDC to USB or 12VDC to 120VAC adapter/inverter to plug them into. I like the Griffin Compact USB Ports just because it is so small. It is basically flush when you plug it in, even so much so that it allows Ford, and GMC socket covers to close over it. The cover in my wife's Pontiac would not close over it, and recently, it wasn't deep enough to reach the bottom of a Mazda power port (frustrating!) Also, since it is so compact, it is sometimes difficult to remove, so I would recommend it for a semi-permanent installation. It is a 1 amp USB port, so will not support iPad and other high-current charging devices. If you need support for iPad or some other device up to 2.1 Amps then the Bracketron is also a good compact alternative. Also, this one is a little easier to grab for removing it if you have only one port and/or other devices that you use in your power port. If you need 120 Volt AC power for anything else including PCs and other devices that use 120VAC, I would recommend a Black and Decker 100 Watt Inverter.  However there are a few disadvantages. With a 12VDC-120VAC inverter you will get some noise if you are listening to audio off of a PC for example. This is because you are converting 12VDC to 120VAC then to 19VDC. (Generally PCs use 19VDC power.) The noise is generated in the 12VDC to 120VAC inversion function. There is also some fan noise on these so check the other reviews. So, for some specific applications you may want to spring for the 12VDC-19VDC converter option, but they will only be useful for that particular type of device even if you get a universal converter with multiple tips. The 12VDC to 120VAC are a little more versatile because you can use them for a number of devices. I like the pocket sized one just because it is so portable. I carry one in my backpack with me. Several even have USB ports as well. Another one I liked for the car was the Rally 200 Watt Cup Holder Inverter. It has (2) 120VAC outlets, a spare 12VDC Outlet and a USB Port, although, I am not clear on how many amps the USB provides.