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Regular Contributor I
Posts: 187
Registered: ‎03-27-2013

PoE injector fail after some time

[ Edited ]

HI,
we have over 100 IAPs (205 model) and in 3 month near 10 PoE injector are failed.

Is very strange that so much PoE injector have this issue, and it is very fastidious, becaue The RMA procees is not ever quick.

Is a problem related only to my network? Or the Aruba PoE has some known problem?

 

There is some best practice?

 

Regards

Andrea Acampa

Andrea
Guru Elite
Posts: 20,978
Registered: ‎03-29-2007

Re: PoE injector fail after some time

What model/part number is that POE injector?



Colin Joseph
Aruba Customer Engineering

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Regular Contributor I
Posts: 187
Registered: ‎03-27-2013

Re: PoE injector fail after some time

HI,

part number is  PD-9001GR/AT/AC

 

 

Andrea
MVP
Posts: 1,310
Registered: ‎11-07-2008

Re: PoE injector fail after some time

How is their failure being determined? And are they connected to a switch providing POE?  Are they connected to clean power? Sometimes you will see POE injectors (like the 9001 that provides 802.3at) but connected to an 802.3af power source. The POE injector will pass-through the 802.3af power and will not provide 802.3at and will appear like it fails to provide 802.3at power.

 

I don't think I've seen 10 poe injectors from Power Dsine fail in my entire career, so there's likely something wrong with the power or they are connected up to POE switches and are appearing not to work.

Jerrod Howard
Sr. Techical Marketing Engineer
Regular Contributor I
Posts: 187
Registered: ‎03-27-2013

Re: PoE injector fail after some time

HI,
we try to change poe with another one and the ap works fine.
After your reply I begin to suppose that can be an issue on electric line, because you are second technician that give to me this opinion.

Have you any idea about type of verification that i can do?

 

Regards

Andrea

Andrea
MVP
Posts: 1,310
Registered: ‎11-07-2008

Re: PoE injector fail after some time

I would hire an electrician, they should be able to put some diagnostic tools on there to measure things like voltage, current, ground detection, etc. Additionally, if you have tons of devices connected to a single outlet or the circuit is heavily loaded, that will cause issues as well. Finally, you could look at putting power conditioners on the line (things like a power conditioning UPS), though you might be risking a more expensive UPS. The PowerDsine injectors are rock solid and I've personally never seen one fail, let alone nearly a dozen. So it seems like it might be some other factor(s).  

Jerrod Howard
Sr. Techical Marketing Engineer
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