John,
Sounds like low voltage cutouts. And it is the dead of winter so the batts will
be voltage depressed. Try installing the temp sensor directly into the FM60
rather than to the Hub. Also, unless those L16s are sealed, maybe bump the
absorption voltage up to 30VDC or even a bit more for the winter.
Good Luck, Bob-O
On Feb 6, 2011, at 8:21 PM, john wrote:
Wrenches,
I have a mountaintop transmitter site with an FX3524, Flex Max 60, some PV
and 12 L16 Bateries. They are set up in a small building used for the ski
patrol at a ski area. There is a 25' freestanding lattice tower on the roof
with high speed wireless internet transmitter and receiver antennas. It is a
relay site and direct signals to customers. We have a problem with the
inverter shutting off ("off" indicating on the mate ) somewhat randomly as far
as # of days apart but strangely all the shutoffs have happened between 10:08
PM and 10:30 PM. We thought it might be an inverter or mate problem so we
replaced both with new units. The problem continued with the new equipment.
We then suspected the data logging connection may be sending a stray signal so
we removed the data connection from the FX (removed the connection from the
mate). I then also removed the connection from the FM 60 to the HUB, connected
another MATE directly to the FM 60 and connected this new mate to our data
aquisition so that we could still monitor battery voltage. The only common
connection now is the batteries and also our data system is being powered from
the AC out on the inverter. Now. after almost 3 days of operation, the
inverter has shut off again at 10:15 PM yesterday. We know this as the data
stopped coming in due to the loss of AC power at the site. My take is that the
data monitoring equipment has nothing to do with the problem... also reinforced
from several similar setups working flawlessly. The only thought I have is
that the nearby cell tower is sending out some interference. Does anyone have
a clue as to what this problem could be. My customer is really MAD. All their
brand new high speed internet customers are having regular long outages. We
have to trailer a snowmobile to the mountain almost an hour away and go to the
top to push the ON button. Also, any comments on other data systems which
could turn the inverter on remotely.
John Blittersdorf
Central Vermont Solar & Wind.
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