Accidentially cleared EEPROM on Smart-UPS 5000RM (SUA5000RM I5U)

[rvs01_apc]

Hello there,

I have an APC Smart-UPS 5000 RM I5U with a NMC 9617. I recently replaced the batteries a few months before and did the runtime calibration a couple of times. My original problem was that the UPS had very little runtime at a load of 9 % (only like 20 minutes). I did some googling and stumbled across the Battery constant issue. I´ve decided to give it a shot...well, afterwards you always learn something for the future.

I did follow the guide over at http://joeteck.com/apc.htm. I fired up a Windows XP with Hyperterminal, connected to the UPS with no issues, got into the PROG mode and accidentially pressed strg+y, which cleared the EEPROM. Now the UPS thinks that it is a Smart-UPS 450, wrong voltages and wrong line frequency etc. 

I want to make clear at this point that I understand that this is a absolute no-go action by going into the PROG mode and messing around with stuff, I was aware of the dangers of my action. The only thing I want to ask here is if there´s a chance to get this thing working again by setting again the correct values for the model etc. I already managed to set the correct model and could confirm that the voltages (I live in Germany) were correct. The current issue is that the line frequency is wrong and it´s not recognizing the input power => when I turn on the input power, it still remains on battery, complains about a line failure and shows the wrong line frequency (60 instead of 50). A friend of mine who is an electrician disassembled the UPS and checked if there were damages to the electrical parts. As far as he could test it, there were no damages.

I am also thinking of getting a dump of the EEPROM somewhere and cloning it to my EEPROM, but it seems that no one has put a dump of it online. If anyone here has the same model like me and would not mind dumping its contents, please get in touch with me.

Every little advice would help.

Kind regards

[rvs01_apc]

Is there anyone who had a similiar issue? Come on...

[Brad_C]

Whoops. Yes I had an SU1400RM that lost its mind and I had to rebuild the eeprom. The SUA has extra constants that I haven't had the need to play with (VA vs Watts for instance).

Where you will likely run into serious issues are the constants 4, 5 & 6. These are undocumented and there exists a little list of the known ones in the apcupsd documentation. There are none listed for an SUA5000. They are fundamental to the way the UPS responds to its batteries and getting them wrong leads to all sorts of major behavioural issues on battery.

If you had those then you could calibrate the voltages, loads, VA measurement and other variables to get it back to mostly working. Without those you're pretty much in the dark. If you knew someone with an identical unit they could read them out for you.

The 50/60Hz thing is indicative of it thinking it's a "domestic" machine rather than "International". In the SU series that was defined by the model code. I can't help you with how it works on the SUA.

Your biggest immediate issue will be without a correctly set battery voltage scaling constant the UPS is quite likely to be under-reading the battery voltage and winding the charge output up to compensate. That'll cook your batteries in short order.

[rvs01_apc]

Thanks for your info. That means I have currently two options: Getting a dead throwaway ups from ebay or get in touch with someone who has the correct values for the smart constants.

Option 1 is currently not the one for me as on ebay the 5000 RM is still quite expensive, even the dead ones, and option 2 isn´t available to me either because I don´t know someone who has the same UPS as mine, which brings me to my question:

Can someone here in the forum who has the same UPS model as mine dump me the values?

I´m currently using this tool (http://apc-fix.com) to fight my way back to the correct settings and I´ve already requested the full version.

You can use it to read out nearly everything important (and in this case the Smart Constants too), it looks like this:

mgDuOtSbmasOe3oja6upeQ%3D%3D.jpeg

If anyone can provide me the correct values would be great.

Kind regards to you Brad for the response.

[rvs01_apc]

Hi Brad,

thanks for your image. I got your response via mail, but it´s not showing up on the thread here. I will try out the constants and report back here.

Kind regards

[Brad_C]

I wouldn't do that. The reason I deleted the post is the russian translation indicates that is an incorrectly configured device.

It might work, it might not. Having said that, you won't do any damage, it'll just give poor runtime and have issues with the immediate battery reading as it transfers to battery.

[rvs01_apc]

Hi Brad,

I got in touch with someone who had a working UPS like mine and shared me the correct values.

If someone ever need these, here is a screenshot:

aDoD5LJkcAlZvnFuYCNKYg%3D%3D.png

Thanks for all the help!

[Brad_C]

Are you *sure* that's an SUA? The firmware code looks more like a 3rd generation SU.

With a manufacture date of 2001 it's be in a gray area.

[rvs01_apc · Accepted solution]

On 1/31/2019 4:15 AM, Brad said:

Are you *sure* that's an SUA? The firmware code looks more like a 3rd generation SU.

With a manufacture date of 2001 it's be in a gray area.

The UPS I got the values from are exact the same model.

The manufacturing date is not real, just something I´ve put in temporarily until I´ll figure out the real one. Same goes for the battery replacement date.