PDU AP7920 Fail's after upgrade

Stefan-_apc · ‎2021-07-12

Hello,

My PDU AP7920 relais wont switch on after i have upgraded the firmware.

The file that i have uploaded is : apc_hw02_rpdu_374.bin

Did i upload the worng file to my 10year old PDU or am i missing somthing?

BillP · ‎2021-07-12

Hmm, OK. Actually, let's proceed with FTP'ing AOS 3.9.0 on there and letting it reboot and see if then AOS 3.9.0 is the active OS afterwards when you serial in. If it is, it will probably have wiped out rpdu 3.7.4 application bin file so try to push that second if AOS 3.9.0 successfully loads.

Here are the FTP instructions if you need reference (refer to NMC1 FTP instructions) ->

See Answer In Context

BillP · ‎2021-07-12

Hi Stefan,

Which .exe did you download for firmware? It sounds like maybe you got apc_hw02_aos374_rpdu374.exe - is that accurate?

The first question is what firmware did the AP7920 have on it when you started?

Essentially, you always need to load an AOS (APC Operating System file) first, let the device reboot its management interface, then push the application file (rpdu 374.bin in this case), let it reboot once more to load the application, and then it'd be all set. AOS 2.0.2 would need to be loaded if your PDU was at an originating AOS earlier than 2.0.2. If that was the case, you'd do AOS 2.0.2, reboot, AOS 3.7.4, reboot, rpdu application 3.7.4, reboot, done.

Depending on your answers to above, we are likely able to fix this but we need to know if you can access the PDU now in any way (FTP, serial, etc) and then see what files are loaded on it now by looking at it's file directory or "About" section in the menu if you can access it.

Stefan-_apc · ‎2021-07-12

Hi Angela,

I have download the apc_hw02_aos390_rpdu374.exe.

When i started it had PDU

Stefan-_apc · ‎2021-07-12

The loaded AOS on my PDU is 2.0.2 .

BillP · ‎2021-07-12

Hmm, OK. Actually, let's proceed with FTP'ing AOS 3.9.0 on there and letting it reboot and see if then AOS 3.9.0 is the active OS afterwards when you serial in. If it is, it will probably have wiped out rpdu 3.7.4 application bin file so try to push that second if AOS 3.9.0 successfully loads.

Here are the FTP instructions if you need reference (refer to NMC1 FTP instructions) ->

Stefan-_apc · ‎2021-07-12

The PDU relais are working again. Thx!

I have only 1 problem now cant see how many Amps i am using...

When i read the "Load Management" page i have 0.0Amps with 3 servers where i had before reading of /- 1.2 Amps...

BillP · ‎2021-07-12

Hmm, can you try adding a few more things to make sure it registers a larger load? I think we have changed a little how accuracy/squelching works between firmware versions based on some of the notes here ->

Stefan-_apc · ‎2021-07-12

I have add another server and now the pdu registers a load of 1,9Amps.

Thx for helping me!.