Clicking, Bleeping, Online light, Reset, UPS

[Anonymous user]

the UPS i have is a Smart-UPS 1000
The symptom is that the clicks and bleeps.
The cause is not the equipment attached to the UPS, I have a tower computer, a monitor and a Data Acquisition box.
The cause if a voltage fluctuation in the supply to the UPS.
I have a Air condition unit on the same supply line and when the chillier compressor switches off this is when the UPS starts to click and bleep and the “on line” light flashes it time with the click.
A BIT MORE INFORMATION.
The power supply is 2 phase, 125v per phase, giving 215 across the 2 phases. This goes to a multiway extension from where it goes to the A/C unit, a fan and to a STAC voltage control unit. This unit takes the voltage down to 110v across the 2 phases and, (this may be an issue) 125v for one phase and 62v on the other. Which feeds the UPS.
If I have a power failure the UPS clicks, the “online” light goes out and battery takes over and I have about 30 minutes of power to do what I need to, that’s OK. And when the power comes back on the UPS goes back “online” that’s OK.
BUT when I get this power fluctuation, this is where the problem is, because, the UPS “online” light flashes and the unit clicks. (I would take it that the clicking is a solenoid switching between “online” and battery, or charging and not charging) When it is clicking the battery is NOT being charged.

How to reset.
I found that switching off the supply, waiting for the UPS to beep then switching it on again would reset it to online. Pushing the On button on the UPS until it beeped would reset it. Turning off the equipment supplied by the UPS would reset it. And sometimes it would reset itself,
BUT these DO NOT work all the time, Sometimes I have to switch everything off before it will work properly again.

What can be done to fix the problem.
Is it the 2 phase power supply an issue.
I am working in country where the ambient temp can be over 55C about 130F.
If anyone want more info just ask, i may have missed something.
Any help would be appreciated.

[BillP]

Hi Phillip,

What is the exact model of your UPS? This can be found at the back of your Smart-UPS. This would tell us what kind of input voltage it requires. If it is a domestic US/North American Model it requires to have a single phase Hot, Neutral and Ground configuration.

[Anonymous user]

Hi JonPro
Ok i dug out the back of the UPS and found the information. Not sure how muct you need but here is what i could find.
SUA 1000 US
0S0944160476
Input Voltage 120V 50/60HZ 12A
Output 120V 50/60 HZ
1000 model 670W

THe sensitivity light is on all the time
Site wiring fault is on all the tine

[BillP]

Thank you very much.

From your response, I do see that the site wiring fault LED is lit up. As much as possible it is not recommended to use the UPS if this LED is lit up for this lessens the units capability to suppress surge/spike. I strongly suggest that you have this addressed first, we do have an APC Knowledgebase Article that would tell you the reason why does it lits up -- [My Site Wiring Fault Indicator LED is on my UPS/Surge Protector|http://nam-en.apc.com/app/answers/detail/a_id/183/kw/site%20wiring%20fault%20light]

The sensitivity LED is lit up as well, I do have a feeling that the unit might be at high sensitivity right now. It means that a small change in voltage or distortion with the AC frequency would make the UPS switch to on battery. We could lower it down by pressing the button beside it, it can be set to Low, Medium and High.

Do you see a white sticker at the back? See if you could find something that says SUA1000US or something.

[Anonymous user]

Thanks.
Yes the unit has a sticker with SUA 1000 US.
What i have managed to do today is to hook up to a supply that is single phase 224v. This goes into the STAC voltage regulator. But i still have 2 phases coming out of the STAC 62v and 30v each 107v combined, to the UPS.
The clicking, flashing, beeping happens when the Air condition unit on the same supply kicks off, and this is the only time the UPS has a problem.
But today with the 224v supply this has not been happening, the UPS has not clicked or beeped ones.
So i think the solution to my issue is to make sure that the supply is 220v single phase.

I havent been able to Check out the Wiring fault LED (why is it not on the front) but will do so and report back.

[BillP]

How is the STAC wired up to your UPS? The UPS should be configured with an input setup of 1 Hot, 1 Nuetral and 1 Ground.

The air conditioner could be causing your voltage to sag, it tends to "eat-up" the voltage and this affects the other electrical outlets that you have. Your UPS senses that the voltage dipped and for the load to have a good input, it switches itself to battery power.

[Anonymous user]

"How is the STAC wired up to your UPS? The UPS should be configured with an input setup of 1 Hot, 1 Nuetral and 1 Ground."
The problem here is i have no control over the the way the STAC is configured. but i seems to split the 110 voltage.

"Your UPS senses that the voltage dipped and for the load to have a good input, it switches itself to battery power."
Yes this is what it does, but the issue is Why does the UPS not sort its self out and stay "online" when the power has been restored. It just keeps on clicking, online, offline, online, offline,
Is it that with the incorrectly configured power supply the UPS is confused.
We know that if i have 2 phase to the AC and STAC, which gves 2 phase to the UPS, there is a problem.
If I have 1 phase to the AC and STAC, which gives 2 phase to the UPS, there is not a problem.

Does APC do a Voltage regulator which would give me 110v hot, neutral and ground even though i put in 110v 2 phase, or 220v single phase.
Thank you for your help
(after your next reply i will close this question, i'm going home to Scotland on Thus)
thanks again
ctinspector

Message was edited by: ctinspector

[Anonymous user]

I have marked the question as answered. But there is still a question, "why will the UPS not reset its self when the power is resumed". This would be a very technical answer, but something that maybe needs to be addressed.

[BillP · Accepted solution]

I forgot to ask about this, do you really need to have a 120V input into your load?

From what we can see here, the issue has something to do with the wiring. Like what I have said before the UPS that you have requires a single phase input with Hot, Neutral and Ground configuration. You might be feeding it with 120V but it comes from two phase. If the phase to phase voltage is within the range of the UPS it will probably stay online, however it would not resume when power is restored because it is looking for H, N, G and not H,H,G.

You could either use an X167 unit, which is dual input 230/120, or you could use a stepdown transformer upstream from the UPS. We do not have any 220v stepdowns, but the SURT003 could do either 208 or 240 if you can tune you input to be in range. The output of the transformer would be H,N,G. One other option if your equipment has universal power supplies would be to use a high volt UPS (either an international or a T 208v). With the kind of your input connection/wiring, you might be best off with an RT like the SURT1000XLI