If that's right, would that mean 0.5amp on 4&5 and 0.25amp on 3&6,7&8 ?
Is it a 0.5amp fuse?
------ Original Message ------
From: "Jeremy" <[email protected]>
To: [email protected]
Sent: 5/8/2018 11:42:35 AM
Subject: Re: [AFMUG] crowdsource troubleshooting
No, that is not true, it adds an additional ground on 3&6. So to
obtain a gigabit connection you have + on 4&5 and - on 3&6, 7&8. All
of the present day UBNT gear is like this since they added gigabit
Ethernet. When we upgrade we add a jumper to 3&6 to get it to
negotiate at gigabit, but they seem to operate at 100FDX without it.
On Tue, May 8, 2018 at 9:30 AM, Jacob Turner <[email protected]>
wrote:
The Prism Gen 2 uses "standard" UBNT passive 24v POE. +4,5 -7,8.
I've seen netonix switches claiming as much as 12 watts draw from one
when running. I wouldn't be surprised if their startup draw may be a
bit higher.
On Tue, May 8, 2018 at 8:16 AM, <[email protected]> wrote:
I need help in understanding a product failure.
I have now had two customers with similar failures in my POE fuse
product. The fuses are blowing.
So far it is limited to the fuses on pins 4/5.
One customer is using:
UBNT 5AC Prism Gen 2 radio, Mikrotik 411 boards, using both poes and
netonix as the power supply.
What pins and polarities does that radio use for POE? How much
current?
I may need higher rated fuses or slower fuses. But I can only go so
high before it is not protecting Netonix thus becoming an expensive
CAT5 splice.
My ideas so far:
I need a slower reacting fuse.
I need a higher amp rating fuse. (not sure how high I can go and
still protect Netonix)
Some loads have unanticipated currents on those wires.
Plugging in when powered may cause a connection sequence problem
where if pin 4 makes contact first the whole load will go through
that wire and blow that fuse.
