If you have a base unit attached to these, you should look at the event counters on the tripped line in the binary/boolean tab to determine if the device is detecting an overcurrent event. If it's seeing an overcurrent trip, then yes, check the surge suppressors.
The other item is what has been mentioned, if you have too low of a voltage into the PowerInjector, the ePMP's will reboot. This is especially true in cold weather since the units seem to draw more even after startup. You need around at least 26V on the input of the power injector, if not a bit more, for an ePMP to run correctly on a full 100m of cable. You could probably get away with a bit lower voltage on shorter runs. The 10/100 injector doesn't drop quite as many volts due to it being a switch closure instead of a semiconductor junction, so you might be right on the edge of what is acceptable. BTW, too low of voltage will also cause 'trips', as when the voltage drops below acceptable ranges for the ePMP, the ePMP power supply circuit tries to pull more and more power from the CAT5 cable, eventually causing what looks like a brief short circuit just before it shuts down. On Mon, Apr 30, 2018 at 11:16 AM, Josh Luthman <[email protected]> wrote: > I've got two of these with problems: http://store. > packetflux.com/powerinjector-plus-sync-gigabit-version/ > > However one of these gives me no problems: http://store. > packetflux.com/sitemonitor-4-channel-gigabit-poe-injector-controller/ > > I have a 24vdc plant going up the tower. In the box it feeds these three > Packetflux units. The 4 channel POE injector has given me 0 problems. > > I've got Cambium ePMP on the PowerInjector and it has been randomly? > rebooting units for several months. Yesterday one of the ports just > decided to turn off for 20 minutes and come right back. We've replaced the > line & radio to make sure it's the box, but all signs point to it. > > Has anyone else seen this or am I lucky in getting the only two units with > power problems on them? AFAIK sync has been just as reliable as the power > through them. > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> > Suite 1337 > <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> > Troy, OH 45373 > <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> > -- *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 [email protected] | http://www.packetflux.com <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> <http://twitter.com/@packetflux>
