It shouldn't be too much draw for it, no. If I remember correctly, the RB750UP is supposed to be able to supply a total of 2.5 amps and up to 2 amps per port. With the early firmware, the RB750UP could only supply something like 500mA per port, and that often caused problems.
I'm wondering if there's something wrong with that particular batch of NanoBeams, where they're overheating and drawing an abnormal amount of power or something like that. On Fri, Mar 6, 2015 at 3:44 PM, Vince West <[email protected]> wrote: > The RB750UP comes with a 2.5A power supply if I am not mistaken. comes > with a .05A power supply. I can't imagine, unless you boot 4 of them up at > once, that the draw is too much for the NBM5. I am just guessing, as I > don't have a site with more than 3 devices drawing power when it boots. > > Vince West > Tower Hand > Technical Support > Shelby Broadband > 148 Citizens Blvd > Simpsonville, KY 40067 > Phone: 1-888-364-4232 > > On Fri, Mar 6, 2015 at 4:41 PM, John Woodfield <[email protected]> > wrote: > >> +1 on firmware and routerboard firmware upgrade as well >> >> >> >> >> >> >> >> >> >> John Woodfield, President >> >> Delmarva WiFi Inc. >> >> 410-870-WiFi >> >> >> >> -----Original Message----- >> From: "Vince West" <[email protected]> >> Sent: Friday, March 6, 2015 4:34pm >> To: [email protected] >> Subject: Re: [AFMUG] Nanobeam M5 and RB750up short circuit power issue >> >> Make sure the firmware for the 750UP is up to date. I know I had some >> issues with 750UPs that had current RouterOS at the time, but was still >> running firmware that was pretty old. I honestly don't recall what firmware >> version it was, but it seemed to clear up the problem I was having. >> Current firmware version on RouterOS 6.27 is 3.22. I am almost positive >> there was a firmware version out there that caused issues with the PoE >> functionality. >> Please note, I was also doing this on a test bench, no on anything in the >> field. >> >> Vince West >> Tower Hand >> Technical Support >> Shelby Broadband >> 148 Citizens Blvd >> Simpsonville, KY 40067 >> Phone: 1-888-364-4232 >> >> On Fri, Mar 6, 2015 at 4:32 PM, Mathew Howard <[email protected]> >> wrote: >> >>> Odd... it sounds to me like the NanoBeam is drawing too much current. >>> Will the power up from the 750 after they've been sitting awhile and cooled >>> down, or is it really just one time? >>> >>> On Fri, Mar 6, 2015 at 3:22 PM, Darin Steffl <[email protected]> >>> wrote: >>> >>>> The included power supply. We have plenty of the NanoBeam M5's running >>>> off the 750's as well except for this most recent batch of Nanobeam >>>> feedhorns with a 1442 data code. >>>> >>>> On Fri, Mar 6, 2015 at 3:06 PM, Mathew Howard <[email protected]> >>>> wrote: >>>> >>>>> What are you using for a power supply on the RB750UP? We have quite a >>>>> few NanoBeam M5's running off of RB750UPs with no issues. >>>>> >>>>> On Fri, Mar 6, 2015 at 2:43 PM, Darin Steffl <[email protected]> >>>>> wrote: >>>>> >>>>>> Hello all, >>>>>> I am running into a very weird issue between our Nanobeam M5 400mm >>>>>> 25db feedhorn and a Mikrotik RB750UP. When I try to power up the M5 >>>>>> feedhorn with the POE out ports on the Tik, the feedhorn powers up the >>>>>> first time and stays online until I unplug it. When I plug it in a second >>>>>> time, it no longer powers up and doesn't even attempt to turn on. When I >>>>>> force the POE port on, it says short circuit and does not power up. If I >>>>>> plug in a Loco or M2 nanobeam feedhorn, they power up all day every day >>>>>> as >>>>>> many times as I can plug them in. >>>>>> So to test further, I plug in a second and third M5 feedhorn and they >>>>>> all power up the first time only and when plugging in for a second time, >>>>>> nothing at all. I've tried 3 Tik's from different batches and they all do >>>>>> the same thing. M5 feedhorn has issues, locos and m2 feedhorns fine. >>>>>> The only thing I can think of is the M5 feedhorn support 1000 Mbps >>>>>> LAN speed but it has always been fine running on these RB750UP before >>>>>> without issue which is very weird. Also, the M5 feedhorns aren't fried >>>>>> when >>>>>> I do this as they power up just fine from a standard ubiquiti POE >>>>>> afterwards. They'll just never power up again from the 750UP. >>>>>> Any ideas? >>>>>> -- >>>>>> Darin Steffl >>>>>> Minnesota WiFi >>>>>> www.mnwifi.com >>>>>> 507-634-WiFi >>>>>> <http://www.facebook.com/minnesotawifi> Like us on Facebook >>>>>> <http://www.facebook.com/minnesotawifi> >>>>>> >>>>> >>>> >>>> -- >>>> Darin Steffl >>>> Minnesota WiFi >>>> www.mnwifi.com >>>> 507-634-WiFi >>>> <http://www.facebook.com/minnesotawifi> Like us on Facebook >>>> <http://www.facebook.com/minnesotawifi> >>>> >>> >
