SUA750XLI reports as Smart-UPS 3000 RM

[Anonymous user]

Hi,

I have Smart-UPS 750XL (SUA750XLI, firmware revision 630.3.I). In PowerChute SW it reports itself as model Smart-UPS 3000 RM. It also reports "Nominal battery voltage" = 48V - should be 24V.

Previous owner of this UPS applied APCFiX software on it to fix battery constant and after that "action" UPS reports bad model type.

Is this error recoverable?

Thanks for help.

Josef Smerhan

[BillP]

This is a good example of why we don't really provide battery constants anymore ourself as a company

Anyway, I can't post anything here but you may be able to find instructions online how to adjust this or if not, local tech support might be able to provide instructions offline if you cannot find anything online.

[Anonymous user]

I´m able to change battery constant with hyperterminal. I select 86 as battery constant for SUA750XLI from list of battery constants on apcupsd.com site, but no luck with this.

You realy can't help me here?

[BillP]

We don't provide battery constants here anymore because of basically what happened to your UPS - if the procedure is done incorrectly, it can damage the UPS and we cannot be liable for that.

As far as what happened previously, I am not sure exactly what was modified on the UPS to cause this problem with it but if there were commands to change it, we wouldn't be able to provide them here because UPS-Link communication protocol typically requires a non-disclosure agreement (NDA) to obtain from Schneider and use even though as I mentioned, you may be able to find resources online for modifying either your constant or model number on the UPS knowing that you really should have an NDA to obtain that communication protocol.

[Anonymous user]

I see. Well, thanks anyway.

[BillP]

Sorry

[Anonymous user · Accepted solution]

I am actually surprised that the model string appears to have been messed up by the APCfix software...as this variable is not supposed to be "writeable" in the UPS internal EEPROM. If you follow the Network UPS Tools (not supported by APC ) hyperterminal access procedures (as you would have done to change the battery constant to the correct value) , typing an " ^A"   (ctrl-A I believe ) in smart mode (IE the "SM" prompt) should tell you what the model ID string is and typing a "B" gets you battery voltage gain (which is adjustable by + / - keys to take it up / down in steps of approx 0.10 Volts per step, similar method to changing the battery constant. For example "E9" is the correct value for an SUA1500 ). Lastly, entering a "g" gets you the nominal battery voltage.

Good luck fixing this!