EMC ups  - Page 1
Forum section: electronics / projects

author: Brane45
author_rank: Contributor
timestamp: February 09, 2021, 01:05:01 pm
content: HelloI need help with my EMC ups. UPS is designed for storage and when the electricity goes off works only 5 minutes, then turn off. So, how to extend this time from 5 minutes tountil the ups detect that the batteries are empty and go off.Pls help me.

author: Pack34
author_rank: Frequent Contributor
timestamp: February 09, 2021, 03:45:53 pm
content: A UPS typically keeps everything on battery until the battery drops too low. They're typically 12V lead acid batteries. You could probably replace the existing one with a car battery.

author: Brane45
author_rank: Contributor
timestamp: February 09, 2021, 06:35:45 pm
content: well if i replace batteries with car batteries ups still works 5 minutes cause this ups was designed for emc storage and when it was in storage was controled by storage cpu.

author: Brane45
author_rank: Contributor
timestamp: February 09, 2021, 06:48:12 pm
content: EMC ups has a limit in software and that limit is 5 minutes. Here is a pic of EMC setuphttps://cdn.discordapp.com/attachments/508303968372391946/808769291134304316/2KV1N1IiFrW55mzxYvKVO9Li7jFvdJZbJuzVFLUU8Zd76ENUKewuCPZuNv0ASJ-yjkV9w4ZzeJTevYU5K5LtMpEy_9lM94NFosTy.png

author: Benta
author_rank: Super Contributor
timestamp: February 09, 2021, 07:55:49 pm
content: I suspect the 5 minutes is just bridging time to get the gas/diesel generator started.

author: penfold
author_rank: Frequent Contributor
timestamp: February 09, 2021, 09:45:01 pm
content: Quote from: Pack34 on February 09, 2021, 03:45:53 pmSeriously avoid car battery! Or at least make sure the predicted depth of discharge is significantly lower than its rated capacity. A proper deep cycle lead-acid is what you need, they're designed with much more substantial plates which are deigned to recover from deep discharges, car batteries can be seriously damaged by deep discharges.

author: Vovk_Z
author_rank: Super Contributor
timestamp: February 10, 2021, 12:15:07 am
content: Quote from: Brane45 on February 09, 2021, 01:05:01 pmGet a software for your UPS.

author: Brane45
author_rank: Contributor
timestamp: February 10, 2021, 07:22:40 am
content: UPS cannot be empty cause when electricity goes off works only 5 minutes then goes off

author: Brane45
author_rank: Contributor
timestamp: February 10, 2021, 07:26:51 am
content: Quote from: Vovk_Z on February 10, 2021, 12:15:07 amSoftware for this ups is not on google cause ups was controlled by storage processor.

author: Brane45
author_rank: Contributor
timestamp: February 14, 2021, 04:44:27 pm
content: Software for this ups is not on google cause ups was controlled by storage processor.

author: Distinctly Average
author_rank: Contributor
timestamp: February 14, 2021, 05:42:35 pm
content: It was only designed so the storage processor could cleanly shutdown in the event of a power outage. On sites where this was used they would generally have a site UPS, Generators or a kinetic system. If all those were to fail, then the final measure is for the storage to gracefully shutdown to avoid data loss. The updated systems of today just use a bank of super caps to do the same job. Saves a lot of weight and the hassle of replacing the crappy lead acid units every couple of years.

author: Brane45
author_rank: Contributor
timestamp: February 14, 2021, 06:31:43 pm
content: Yes, but still idk how to extend time for my EMC USPS from 5 minutes to 60minutes.

author: penfold
author_rank: Frequent Contributor
timestamp: February 14, 2021, 06:58:19 pm
content: Quote from: Brane45 on February 14, 2021, 06:31:43 pmWhat you need to find out is what it is that's controlling the time limit.I'm assuming it's an MCU, perhaps there is a debug interface you could start investigating?If you need some help with that, perhaps share some detailed photos of the PCBs and somebody might be able to direct you towards which connectors or interfaces are worth trying.You may well find that it has been made prohibitively difficult (not saying impossible) to make a change whilst preserving much of the hardware, the manufacturers will have designed the unit around short duration operation and one of the ways of proving their product safety for certification may been making that duration completely unchangeable.

author: Brane45
author_rank: Contributor
timestamp: February 14, 2021, 07:25:26 pm
content: Idk where is debug port.There is a pic of a control board

author: Distinctly Average
author_rank: Contributor
timestamp: February 14, 2021, 07:40:10 pm
content: I’m not sure you will be able to increase it that far. Almost every EMC BBU I have replaced has got very warm even after just a couple of minutes on battery. Even if you can override the firmware, you may run into cooling issues.I’ve checked navisphere and omnisphere, which were the control software for the BBUs of that age and there are no time settings in there that I can find. I can also only find firmware updates for the whole solution, not just the BBU. Not sure what model you have though as it has been a while since I touched any EMC kit.

author: Brane45
author_rank: Contributor
timestamp: February 14, 2021, 07:52:50 pm
content: Nah it's a small problem to replace a fan and my model is EMC AA23540

author: Brane45
author_rank: Contributor
timestamp: February 14, 2021, 08:01:44 pm
content: Quote from: Brane45 on February 14, 2021, 07:52:50 pm

author: Brane45
author_rank: Contributor
timestamp: February 14, 2021, 08:22:19 pm
content: Cooling is a small problem.

author: Monkeh
author_rank: Super Contributor
timestamp: February 14, 2021, 08:29:55 pm
content: Cooling is a bigger problem than you appreciate. It's not designed for what you want to do - get something which is.

author: Brane45
author_rank: Contributor
timestamp: February 14, 2021, 08:35:27 pm
content: I don't care if EMC blows up , it's important that it works for more than 5 minutes.