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I have a Sol-Ark 12K system. Because of a Voc mismatch between one array and my other 3, I am using an Outback FM60-150 CC to DC coupled the array to the the inverter. Setting the Time-of-Day to daytime hours, the discharge voltage is set to just below float level. This way only power from...

Same issue, support is slow to respond. As far as I know, SOC is measured as Voc, with no current flow, 4-24 hrs after discharge.

Recently I did a battery (AGM) test by discharging the battery bank 15min. The test required measuring Voc after the discharge period. I asked support how to disconnect the batteries safely. The answer was switch no battery in spite of what the manual stated. But when I did that, all power to...

I have a similar issue with my SA12k inverter and 16 6 volt AGM batteries. For one as far as I know, in order to manually measure the battery voltage after discharging them for a while, the batteries should sit for a while with no current flow snd then measure the voltage. After discharging...

I have the batteries selling at 1-2KW. Setting the voltage at float voltage, the system sells power while the battery stays at the float voltage (100% SOC) maintained by the DC coupled CC as long as there is solar gain. It was ammatter of figuring out the TOU settings. Only negative is...

I mispoke. Neither of the PV leads at the array are not grounded else the gfci eill not not work. Sorry for the confusion.

The sol-ark works just fine thankyou

Dunno. This was just a test today. There wasn’t much sun for one thing so 2500 watts output from the CC was pretty good for an aging array. When I stopped the test, the batts recharged from the grid rather than from than from the arrays. But making progress. As for estimates,due to poor sun...

I got the CC to sell 1500 watts. Set float voltage to the same as the inverter and put the inverter in time of use mode. When Vbatt < Vfloat, CC kicked in and a lot more power was sold than than from the arrays connected to the inverter. Still a few problems to solve yet.

my new Sol-Ark 12k inverter is running just fine with the negative side grounded!

havent used the batteries except for backup. we live in a rural area and can have outages. I thought about time of use but we are not charged for peak hours. Have a dumb net meter

150’ through a tight conduit? cost would be high.

Without the 4th array, I’m losing 25% production (2900 kwh)

annual critical loads 16560kwh Annual production. 11616kwh

its an 0ff grid inverter, need GT inverter

I have this manual and tried it and set the rebulk to the current float voltage. Then tried to reduce the float voltage but the CC wouldn't let me. Reset the bulk voltage back to default

its an off-grid inverter. need GT inverter. I've looked all the inverters on Signaturesolar. Haven't found any suitable including size limitations. Thanks

understood. what I was referring to is that the CC never came off float mode provide more power. I've gone through the CC settings but haven't figured it out yet. That's all I was indicating.

tech support wasn't helpful. but I tried TOU. The draw from the battery side was about 2KW which was in excess of the load requirements and selling to both the load and the grid. But for some reason the CC stayed on float mode never going to MPPT and outputting just a few amps. All the draw...

Please. I understand TOU settings. That’s not what I’m looking for since its fixed and will draw down the batteries when. There is is no sun. The grid will then recharge the batteries. Not ideal. I’ll post when I hear back from tech support.

The float voltage of the CC is a bit greater than that for the array. The power does have some place to go, the grid. Looking at the graphical displays of power flow. The power from the DC coupled array goes to both the load and the grid. I waiting to hear back from tech support. The CC...

Don’t reinterpret what I wrote. Another inverter is but one option. I asked SA tech support about configs . I have not determined the configs on my own other than TOU which is fixed times and not dependent on power on solar gain.

These were wired over 10 years ago and are 150’ sway. Rewiring is not practical. The power is not being drawn from the batteries.

can’t use micro inverters. The combiner boxes have the negative side grounded and can’t deliver split-phase power for AC coupling. Only other solution is a small inverter to replace the CC. Space is limited. i have an all electric house so additional power is necessary.

The panels on the array are all good. To answer @n2aws, the CC is connected to the DC side at the batteries. It is delivering power from there through the S-A inverter to the grid and the load in addition to the power generated by the 3 arrays connected to the S-A inverter. The problem is...

I got the same reply only for my 12k unit. Expensive and overkill for a 2500 watt array. Currently my CC us outputtiing just 250w and the 12k is selling 170 watts from the DC side. Waiting to hear from S-A to see if it can be configured to sell all that array can produce.

That should have been no more room

Sol-ark said the simplest solution would be to add a 2nd 12k unit in parallel. A bit overkill methinks for a 2500 w array along with I have more room for a large unit like that and I can’t afford it. I’ll keep looking for a GT split-phase inverter for AC coupling with the Sol-ark inverter

The CC is connected to the battery, as is the sol-ark inverter. the inverter seems to be limiting the power from the battery. to about 170w going to the load and the grid along with the several kw from the 3 arrays connected to the inverter. I don’t know how to change this. The inverter has...

The sol-ark is “hard wired” to use array power first then battery then grid.

I seem to remember seeing a setting for preference between battery and array but Either I’m misremembering or I can’t find it

The CC and the sol-ark are connected to the battery. The sol-ark registers about a 170w draw from the batteries while the battery is maintaining just 0.1v or 0.2v above float voltage. This does not happen without the CC.

this is what have now. The max power from the array is only 250w. The array is 2500w.

K. I don’t think that using microinverters will work. There are only two wires from the combiner box, with the negative side ground. I don’t see how to get a split-phase output from microinverters to the sol-ark for AC coupling.