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Posted: 2021-06-28 02:21 AM
This question was originally posted by Martin on APC forums on 9/5/2015
Hi,
yesterday I replaced the battery of my Smart-UPS750.
I thought this would be the right time for updated the firmware of the Network Managment Card 2.
So I have done it.
After that I would run the runtime calibration which was refused by NMC every time.
I found a post in the forum, that the firmware from the UPS has should be updated too. So I did it and I updated the UPS from 5 (ID17) to 7.1 (ID17).
Unfortunately the calibration does not work after all.
The following have I done also:
But nothing solved the problem.
Has anyone any further suggestion how to solve the problem?
Thank you.
Best Regards,
Martin
Posted: 2021-06-28 02:22 AM
This reply was originally posted by Martin on APC forums on 9/8/2015
Hi Bill,
this was the right hint. Thank you.
I tryed to start the calibration from front panel, which was refused too.
But here I got a helpfull error message. "Calibration need at at least 10% load".
So I put more consumer to the outlets, and now I could start the calibration from NMC.
Sorry for the inconvenience.
Best Regards,
Martin
Posted: 2021-06-28 02:21 AM
This was originally posted on APC forums on 9/5/2015
Normally the only reason for the UPS to refuse the calibration command is a) the battery is not at 100% or b) it is doing something with the battery already (on battery, self-test, etc.).
I'd suggest running a self-test, and if that passes, try the calibration again once the battery returns to 100% from the self-test.
Posted: 2021-06-28 02:21 AM
This reply was originally posted by Martin on APC forums on 9/6/2015
Hi Terry,
thank you for your answer.
I have done this before.
The self test has passed before and I have waited until the battery load was 100.0%.
Today I tried the calibration and it was refused too, after passed self test (yesterday). (As you can see on se5.png)
Posted: 2021-06-28 02:22 AM
This was originally posted on APC forums on 9/6/2015
I think you'll need to wait for the APC folks to see this, then. Here in the US, Monday is a holiday. You can find your local support contact info here.
Posted: 2021-06-28 02:22 AM
This reply was originally posted by Bill on APC forums on 9/8/2015
Hi,
Can you run the calibration test from the Smart-UPS LCD panel? To do this you click on the Esc key, use the up or down arrow to scroll to Test & Diags, click on the enter key, use the up or down arrow to scroll to Calibration Test.
Posted: 2021-06-28 02:22 AM
This reply was originally posted by Martin on APC forums on 9/8/2015
Hi Bill,
this was the right hint. Thank you.
I tryed to start the calibration from front panel, which was refused too.
But here I got a helpfull error message. "Calibration need at at least 10% load".
So I put more consumer to the outlets, and now I could start the calibration from NMC.
Sorry for the inconvenience.
Best Regards,
Martin
Posted: 2022-03-01 02:41 PM
Hi ,
In my case self-test passed but still the callibration got the result: Refused..
Cause: load too low
Model: Smart-UPS 750
Firmware: UPS 08.3
Manufature date: 2013
Any idea ?
Binod
Posted: 2022-03-01 11:02 PM
Hello Binod
There is a FAQ document detailing the requirements for doing a runtime calibration on the SMT/SMX units.
You can find the FAQ here -> https://www.apc.com/us/en/faqs/FA314748/
In short, there are minimum requirements that need to be met, or the unit will refuse the calibration.
"UPS load greater than a minimum threshold, which is proportional to the number of External Battery Packs (XBP) connected. With no XBP connected, the minimum required load is 10% (SMX or SMT); with one XBP: 25%; with 2 XBPs: 40%; with 5 or more XBPs: 85%"
On another note, you are posting to a thread that was marked as solved a while back, which makes your post very easy to overlook.
Best regards
Tonny
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