OutBack Power Technologies User Forum

I would trust the string sizing tool. The person doing the code for that knows what they are doing and purposefully allows the limits, but I understand if you are concerned about it. Maximum power or maximum DC/AC ratio can be important, but most important is the Max Isc (in the manual) and Voltage...

Keep scientists the he77 away from the system at all costs!

Check the event log. It will have captured the charging steps.

the inverter's current limit is set at 50 aac...should I increase it to 75 aac ? Goodness! Is your generator that large? Your inverter isn't designed for that AC load IIRC. There are two AC Input limits to set: 20220516_123511.jpg • Gen Input AC Limit This should be set at (or below) the maximum ra...

what would be the negative of putting PV back online to help with charging The maximum continuous charge current for the battery is 75A. How much charge current is the inverter delivering? Has Global Charger Control been implemented? When the battery reaches the Absorb Voltage set in the FX (56.0V)...

generator charging for 1 hour and 15 min and Mate3s is going back and forth from 53.9 to 54v. Charge controller reporting 54.3v This is pretty normal for charging. That voltage range is the "plateau" at which most of the charge takes place. The 150AH battery was likely at or under 20% SoC...

ClaudeJr wrote: ↑Mon May 16, 2022 10:30 am ok, settings confirmed, pv array disconnected, gen started, and bulk charge initiated. Currently at 53.8v @7:30am

It will take a good while to get up to full.

Are the Phis the black plastic case blocks, or the white metal case?

Our panels are permanently mounted flat (actually a 3% roof pitch so rainwater runs to the gutter). We don't have the unattenuated clear skies San Diego enjoys. Its rare to have blue sky here all day. Rather, we have clear mornings and partial cloud cover by about noon. We could squeeze more PV harv...

The FNDC won't be accurate until its: • properly programmed • connected battery is actually charged to 100% The Absorb voltages on the FX and FM should be set as posted earlier (56.0 and 56.4V) respectively to establish priority for solar charging in the event both are being used at the same time. A...

Great, I changed Absorb specs on FX, FM and FNDC from 54.6v to 56.4v. I also plugged FNDC back up. I will investigate "trim pot" and using FNDC for LBCO for inverter in the morning. I have learned a lot today thanks to you Raysun and my neighbor. Thanks so much for having the patience...I...

LOW BATTERY CUT OFF USING THE FNDC The FX inverter LBCO parameter cannot be set to the 50V cutoff specified for the Phi battery. The FNDC's voltmeter can track battery voltage, and its relay programmed to switch from a closed (ON) state to an open (OFF) state. The FNDC can control the FX Inverter ON...

ClaudeJr wrote: ↑Sun May 15, 2022 4:46 pm Got it...ok, let me know how to go about calibrating the devices...and also the LBCO for the inverter

The calibration procedures are listed above.

viewtopic.php?p=95210#p95210

54.6v (almost there) 54.6V is the old Phi specification for "long Absorb", initially specified at 1H, then modified to 2H. My testing took 1:27H to complete. It is not the currently recommended profile. The latest spec is: Absorb voltage = 56.4V Absorb Time = 0.1H With the FNDC unplugged,...

HAVING THE RTS PLUGGED IN HAS THE POTENTIAL OF DESTROYING YOUR LIFEPO BATTERY.

I suggest unplugging it so temperature compensated charging is disabled.

Aloha from Kahuku, Ka'u, Hawaii Island

Its going to take a bit to create a guide.

Step #1 Calibrate FNDC.

ClaudeJr wrote: ↑Sun May 15, 2022 2:52 pm Almost there...the low battery cut off for inverter only goes up to 48v... documentation states setting it at 50v...is there a work around for that ?

Yes. Get everything else set up first.

It involves the FNDC and FX Inverter ON/OFF terminals.

Suggest making that a separate project.

ClaudeJr wrote: ↑Sun May 15, 2022 12:39 pm Also, what should I set the absorb end amps for my system at...

The examples I posted were calculated for your battery capacity.

FM80 End Amps = 0
FNDC Charged Return Amps = 3

Oops. Except for:
FX EQ Voltage = 56.0V

GM. I'm looking at performing my upgrade this morning...I looked for calibration instructions and how to's...could not find any that made sense...you mentioned, calibrating my FX, FM and FNDC before switch...can you bring me up to speed on how FM80 calibration: https://forum.outbackpower.com/viewto...

JRHill wrote: ↑Sun May 15, 2022 9:57 am Probably the same in many places? My batteries are often full by noon - at least full as I define full.

But in the winter I could triple my array and still have to run the generator for 2.5 months. It is what it is and where it is.

Yes, it moves so easily from feast to famine.

Now you just need to find something to use all that free excess power :cool: Still working on a free charging station for homeless Tesla owners. Seriously, batteries are fully charged most days by 11:30. Today, I planned to disconnect the PV arrays at 10:15 to leave some room in the battery so I co...

Screenshot_20220514-123424_Gallery.jpg 7kW PV array in full sun at "Lāhainā Noon", a twice-yearly event in Hawaii where the sun reaches its zenith (solar noon) directly overhead. A pole stuck vertically in the ground has no shadow at this moment, the angle of incidence on the nearly flat-...

Mixing battery types isn't recommended, but you could probably get away with connecting the AGM in parallel with the Phi for a short while to add some charge. Its the "MacGyver" method. It could be incorporated into the steps I outlined, and would make disconnecting the AGM while operating...

Not really important. But maybe under 3rd Party Batteries - SimpliPhi

Take the last paragraph and post it in a new thread.

We can start with that.

fcwlp wrote: ↑Fri May 13, 2022 5:41 pm

fcwlp wrote: ↑Fri May 13, 2022 4:42 pm Mike, no intermediate position on these breakers.

Mike, you were right. I have never seen one trip but have toggled them many times.

Mike is always right. Dag-nab it.