UPS small

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ptonsparky

ptonsparky

Tom
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NE (9.06 miles @5.9 Degrees from Winged Horses)
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EC - retired
I am doing a bit of FE. We have been using some Omron timers in a well restart. They worked very well until the POCO changed their control. To make it short I'm looking for a very small UPS that can supply power to the OMRON while the POCO is off. 100-240 v input with 100-240 output. One to two watts over 12 hours maximum. No switching is done until the utility comes back on and that is even delayed via other timers.

Point me in a direction if possible.

Thank you.
 
ptonsparky said:
I am doing a bit of FE. We have been using some Omron timers in a well restart. They worked very well until the POCO changed their control. To make it short I'm looking for a very small UPS that can supply power to the OMRON while the POCO is off. 100-240 v input with 100-240 output. One to two watts over 12 hours maximum. No switching is done until the utility comes back on and that is even delayed via other timers.

Point me in a direction if possible.

Thank you.
Click to expand...

https://www.phoenixcontact.com/onli...k=P-22-07-08-02-01&tab=1&selectedCategory=ALL

Phoenix Contact is quite proud of their products, but they make good kit.


If you're looking for something cheaper:
I have the UPS linked to below backing up my networking panel at home. I've had it for almost two years, no complaints. This type of UPS isn't technically listed for use in an industrial control panel, but I see them used all the time.

https://www.amazon.com/gp/product/B01FWAZEIU/

Whichever UPS you select, just make sure to tell your customer to remember to change the batteries every 3-4 years or it won't work when needed. I suspect the Phoenix Contact UPS has a wider temperature range, if that matters in your installation.



SceneryDriver
 
ptonsparky said:
I am doing a bit of FE. We have been using some Omron timers in a well restart. They worked very well until the POCO changed their control. To make it short I'm looking for a very small UPS that can supply power to the OMRON while the POCO is off. 100-240 v input with 100-240 output. One to two watts over 12 hours maximum. No switching is done until the utility comes back on and that is even delayed via other timers.

Point me in a direction if possible.

Thank you.
Click to expand...
I'm trying to figure out what you may have that can't start a new timing sequence as soon as power is restored. That is all I have ever done on these well restarting situations. If it is nature of the timer you are using, seems it may cost less to use a different timer than to use any sort of UPS, unless you have situation that is not typical for this kind of installation.
 
Which timer models are you using?

The Phoenix Contact UPS looks like a great bit of kit...but at $1400 and with 750VA of output it is probably big time overkill.

The timers are likely available in models with 24V DC supply, and you say you only need 1-2W to run them; that is not a very big or expensive battery.

-Jon
 
winnie said:
Which timer models are you using?

The Phoenix Contact UPS looks like a great bit of kit...but at $1400 and with 750VA of output it is probably big time overkill.

The timers are likely available in models with 24V DC supply, and you say you only need 1-2W to run them; that is not a very big or expensive battery.

-Jon
Click to expand...

I was thinking that too, but it sounds like the OP is retrofitting an existing installation. A battery backed PLC would work nicely in an application like this, and probably take up lots less panel space.


SceneryDriver
 
Sola makes a din rail ups that is a bit over $300, but all these din rail UPS units have onboard batteries that are very small.

Could you replace the timers with ones that operate off 24vdc, then power them with a meanwell SDR-120 power supply, a meanwell DR-UPS40 DC ups battery controller, and a pair of 18ah SLA batteries? All that would cost ~$200 in parts (plus the new timers) and give you plenty of runtime.
 
The timer we were using would count down/up on the closure of a dry contact. It would remember at what point in the timing cycle it was when that contact opened and would continue from that point once it closed again.

The only requirement was that we maintained power to the timer. Owner was using it for pipe irrigation and knew that it took XX hours to irrigate that field even if the time was interrupted by POCO control (the dry contact).

POCOs new control is to shut off all power to the wells when they update the service to them. PLC would work but then we have to include an interface. A dial is pretty simple to set and cheap, when it comes with the timer.

The wells happened to be 240 deltas. Some High Leg, some corner grounded.
 
ptonsparky said:
The timer we were using would count down/up on the closure of a dry contact. It would remember at what point in the timing cycle it was when that contact opened and would continue from that point once it closed again.

The only requirement was that we maintained power to the timer. Owner was using it for pipe irrigation and knew that it took XX hours to irrigate that field even if the time was interrupted by POCO control (the dry contact).

POCOs new control is to shut off all power to the wells when they update the service to them. PLC would work but then we have to include an interface. A dial is pretty simple to set and cheap, when it comes with the timer.

The wells happened to be 240 deltas. Some High Leg, some corner grounded.
Click to expand...
Makes more sense, I was thinking restarting center pivots after POCO cycles you off with load control equipment.

Sounds like a simple mechanical timer would work for you. It needs no power for memory, it just resumes where it left off.

T101 might even work.
 
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