I've had some older RB750UP units behave that way intermittently, but
the newer versions as well as the RB960UP work well. If it's an older
PowerBox that might be a problem, the rest of this assume it's a pretty
new unit.
Are you using the front (POE JR45) or rear (terminal) voltage output on
the Tycon? The rear output should have a higher amperage capacity, so
you could try that if you're using the RJ45 currently.
Also keep in mind that the load output on the front/back is an OR value,
not an AND value. You can have 1.5A on the back _OR_ 1A on the front,
but not both. If you've got both running, and are exceeding 1.5A, the
unit is being overloaded (I killed a few Tycon controllers this way).
It sounds like your boot up spike load for all three devices is probably
more than 1A, but I don't know that it's more than 1.5A. I would advise
measuring it to be sure.
You may be able to move from the front to the back to get another 0.5A,
which /might/ give enough breathing room to fix the problem; since it's
the startup spike load seems to be what's causing the issue.
Another possibility might be to replace the charge controller with a
device capable of more output. I suspect the Tycon is your problem (not
enough output current for the startup spike). I have several RB750UP
(newer units) and RB960UP units in the field on MeanWell AD-55B
controllers, and they power up 3-5 units of various configurations of
RocketM2/ePMP from a dead stop, but they put out about 2.4A @ 24v (note
that the AD-55B doesn't include solar capabilities).
On 1/2/2018 9:04 AM, Josh Luthman via Mikrotik-users wrote:
We have an unfortunate deal where we have a temporary solar
situation. It's a 24vdc supply to a Powerbox which is POE to a BH and
AP (Epmp and Nano).
Over night of course it loses power these weeks with the lack of sun.
We get there in the morning and with all three things plugged in it
won't boot right. It looks like the Powerbox comes up but the red
light for POE keeps blinking to the BH and AP. We can unplug these
two, then plug in the BH, and then the AP to solve this problem.
Is there a way to do this without writing a script on RouterOS? I'm
thinking of shutting power off on bootup, then after 60s port 3 on,
60s port 4 on.
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
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