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Powerbox pro RB960PGS - no POE out on auto with some devices
Posted: Sun Apr 25, 2021 8:00 pm
by oskaratk
Howdy,
I see strange interesting behavior with POE on the RB960PGS:
POE is on auto, works fine for devices like hAP lite, Ubiquity nanobeam ( M5 devices)
Connecting a Ubiquity Rocket prism or Powerbeam AC Gen2 - the board stays on "waiting for load"
Using a hex POE, same model RB960PGS - however a revision r2 the board behave like expected and powers up any of the above mentioned devices.
Any insights would be highly appreciated
Thanks
Osakr
Re: Powerbox pro RB960PGS - no POE out on auto with some devices
Posted: Sun Apr 25, 2021 11:03 pm
by krafg
Check that all the devices uses the same voltage.
I'm powering a BaseBox2, a BaseBox5, an LtAP and a Bullet AC.
Bullet AC needs to wait almost 3-4 minutes for powerup.
Regards.
Re: Powerbox pro RB960PGS - no POE out on auto with some devices
Posted: Mon Apr 26, 2021 12:15 am
by modsx
I also encountered strange things. I wanted to see the RouterOS log as current-too-low or voltage-too-low but it looks like it's just on paper.
I tried to fix the problem like this
https://youtu.be/sO7dn_usApo - but the problem didn't go away.
P.S. Compliment MT, because the router is not at fault even after the flight.
Re: Powerbox pro RB960PGS - no POE out on auto with some devices
Posted: Mon Apr 26, 2021 4:55 pm
by oskaratk
Check that all the devices uses the same voltage.
I'm powering a BaseBox2, a BaseBox5, an LtAP and a Bullet AC.
Bullet AC needs to wait almost 3-4 minutes for powerup.
Regards.
all the devices use the same voltage. I can "forced on" the output then it works.
However, it is not clear to me me, if I force the output, will the POE priority still work in case of a overload ?
Re: Powerbox pro RB960PGS - no POE out on auto with some devices
Posted: Mon Apr 26, 2021 6:02 pm
by rextended
Howdy,
I see strange interesting behavior with POE on the RB960PGS:
POE is on auto, works fine for devices like hAP lite, Ubiquity nanobeam ( M5 devices)
Connecting a Ubiquity Rocket prism or Powerbeam AC Gen2 - the board stays on "waiting for load"
Using a hex POE, same model RB960PGS - however a revision r2 the board behave like expected and powers up any of the above mentioned devices.
Any insights would be highly appreciated
Thanks
Osakr
RouterOS version on "r1" and r2???
>> Connecting a Ubiquity Rocket prism or Powerbeam AC Gen2 - the board stays on "waiting for load"
Probably the "internal resistance" is unknow to mikrotik PoE chip, and on r2 have added that. Ubiquit
i is not maded from MikroTik
Re: Powerbox pro RB960PGS - no POE out on auto with some devices
Posted: Fri Apr 30, 2021 9:33 am
by andersa
It might be that you are providing 24v to the input. And as the device has no dc/dc conversion it will only provide its own line voltage to the POE port. If the connected devices require the POE/POE+ voltage of 48-57 volts to turn on, it will remain off. However, if you set the power to always on, it will revert to passive POE, and if your device supports that, it will turn on.
Mikrotik sells higher voltage PSU's for exactly this purpose.
Re: Powerbox pro RB960PGS - no POE out on auto with some devices
Posted: Fri Apr 30, 2021 10:14 am
by rextended
It might be that you are providing 24v to the input. And as the device has no dc/dc conversion it will only provide its own line voltage to the POE port. If the connected devices require the POE/POE+ voltage of 48-57 volts to turn on, it will remain off. However, if you set the power to always on, it will revert to passive POE, and if your device supports that, it will turn on.
Mikrotik sells higher voltage PSU's for exactly this purpose.
From datasheet
Ubiquiti Power Prism: 24V
Powerbeam AC Gen2: 20-26V
Do not use 48V...