Mate3S - FNDC

Discussion about OutBack Inverters in Off Grid Applications

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redsierra
Forum Expert
Posts: 52
Joined: Thu Feb 23, 2006 9:18 pm
My RE system: UPGRADED TO: 9 Kw array, 3 x FM80, Hub 10, 2 x VFXR3648, FN-DC, Mate 3s, PS2AC/PS2DC, Victron Cerbo S GX, 4 Volthium LiFeP04 200 AH 51.2 V batteries (800 AH), Honda EU7000 (inverter style) propane converted generator, EF6200PDEF (non inverter style) propane generator, and EF6300iSDE (inverter style) gasoline generator

FROM: 3.7 Kw array, 2 x MX60, 1 FM80, Hub 10, 2 x FX2524, FN-DC, Mate 3s, PSX240, PS2AC/PS2DC

Mate3S - FNDC

Post by redsierra »

Hello!

Well I made some HUGE upgrades to our system! Now have 9 kw of PV, two VFXR3648 inverters, 3 FM80s, Victron Cerbo S GX and 3 Voltium 51.2 rack mount heated Lithium Iron Phosphate batteries (adding a fourth in a couple weeks for a total of 800AH). Haven't had generator run time in a couple months since the install (manually started twice for 2.5 hours each time).

While the FNDC through the Mate 3 S is behaving well reflecting fairly accurate SOCs (at least compared to what the Cerbo S GX reads right from the batteries BMS), I have these questions:

Is there a way to control the 3 LEDs on the top of the Mate showing battery status. For instance while the SOC is between 72% and 74% it shows Amber. When these batteries can be discharged to 20% or less I feel that at 72% Amber is showing LOW! To me it should still be in the green. I assume there is no correction for this though.

Thanks!
Off Grid Lake of the Woods, ON, Canada
raysun
Forum Overlord
Posts: 11402
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower Two: (2) FXR3048A-01 - Series Stacked, (2) FM80, MATE3s, FlexNetDC
6 SimpliPhi 3.8-48 (48v @ 75AH. 450AH total)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
Honda EU7000is gas fuel generator
Off-Grid

Re: Mate3S - FNDC

Post by raysun »

Wow! Major is an apt adjective!

You assume correctly. The Mate status LEDs are calibrated for lead-acid battery voltages, aren't adjustable, and don't really correspond to LFP metrics. (In fact, trying to track LFP SoC by voltage while under load is somewhat of a fool's errand in any circumstance.) Ignore the LEDs, or if they are too distracting, do what I did with the spurious check engine light in my '60 Ford Galaxy and apply a length of black electricians tape over the display. Problem solved.
redsierra
Forum Expert
Posts: 52
Joined: Thu Feb 23, 2006 9:18 pm
My RE system: UPGRADED TO: 9 Kw array, 3 x FM80, Hub 10, 2 x VFXR3648, FN-DC, Mate 3s, PS2AC/PS2DC, Victron Cerbo S GX, 4 Volthium LiFeP04 200 AH 51.2 V batteries (800 AH), Honda EU7000 (inverter style) propane converted generator, EF6200PDEF (non inverter style) propane generator, and EF6300iSDE (inverter style) gasoline generator

FROM: 3.7 Kw array, 2 x MX60, 1 FM80, Hub 10, 2 x FX2524, FN-DC, Mate 3s, PSX240, PS2AC/PS2DC

Re: Mate3S - FNDC

Post by redsierra »

LOL....figured as much!!

Thanks
Off Grid Lake of the Woods, ON, Canada
raysun
Forum Overlord
Posts: 11402
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower Two: (2) FXR3048A-01 - Series Stacked, (2) FM80, MATE3s, FlexNetDC
6 SimpliPhi 3.8-48 (48v @ 75AH. 450AH total)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
Honda EU7000is gas fuel generator
Off-Grid

Re: Mate3S - FNDC

Post by raysun »

Are the inverters series (240V) or parallel (120V) stacked?
redsierra
Forum Expert
Posts: 52
Joined: Thu Feb 23, 2006 9:18 pm
My RE system: UPGRADED TO: 9 Kw array, 3 x FM80, Hub 10, 2 x VFXR3648, FN-DC, Mate 3s, PS2AC/PS2DC, Victron Cerbo S GX, 4 Volthium LiFeP04 200 AH 51.2 V batteries (800 AH), Honda EU7000 (inverter style) propane converted generator, EF6200PDEF (non inverter style) propane generator, and EF6300iSDE (inverter style) gasoline generator

FROM: 3.7 Kw array, 2 x MX60, 1 FM80, Hub 10, 2 x FX2524, FN-DC, Mate 3s, PSX240, PS2AC/PS2DC

Re: Mate3S - FNDC

Post by redsierra »

They are set up as 240 volt
Off Grid Lake of the Woods, ON, Canada
raysun
Forum Overlord
Posts: 11402
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower Two: (2) FXR3048A-01 - Series Stacked, (2) FM80, MATE3s, FlexNetDC
6 SimpliPhi 3.8-48 (48v @ 75AH. 450AH total)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
Honda EU7000is gas fuel generator
Off-Grid

Re: Mate3S - FNDC

Post by raysun »

redsierra wrote: Fri Sep 29, 2023 10:03 am They are set up as 240 volt
Very good. The VXR class stacked inverters behave much better with 240V AC input.
redsierra
Forum Expert
Posts: 52
Joined: Thu Feb 23, 2006 9:18 pm
My RE system: UPGRADED TO: 9 Kw array, 3 x FM80, Hub 10, 2 x VFXR3648, FN-DC, Mate 3s, PS2AC/PS2DC, Victron Cerbo S GX, 4 Volthium LiFeP04 200 AH 51.2 V batteries (800 AH), Honda EU7000 (inverter style) propane converted generator, EF6200PDEF (non inverter style) propane generator, and EF6300iSDE (inverter style) gasoline generator

FROM: 3.7 Kw array, 2 x MX60, 1 FM80, Hub 10, 2 x FX2524, FN-DC, Mate 3s, PSX240, PS2AC/PS2DC

Re: Mate3S - FNDC

Post by redsierra »

I got really tired of the constant battery concerns and therefore decided to go to the LiFeP04 batteries as much as my pocket book HURT! As a result decided best to go 48 volt....so you know the way that goes....one thing lead to another....but Holy Crap....does the system work now! I am looking forward to getting the 4th battery and we might even be able to be "irresponsible"!!
Off Grid Lake of the Woods, ON, Canada
raysun
Forum Overlord
Posts: 11402
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower Two: (2) FXR3048A-01 - Series Stacked, (2) FM80, MATE3s, FlexNetDC
6 SimpliPhi 3.8-48 (48v @ 75AH. 450AH total)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
Honda EU7000is gas fuel generator
Off-Grid

Re: Mate3S - FNDC

Post by raysun »

For we off-grid folks, I consider the investment in LFP as mental health maintenance. 😉
redsierra
Forum Expert
Posts: 52
Joined: Thu Feb 23, 2006 9:18 pm
My RE system: UPGRADED TO: 9 Kw array, 3 x FM80, Hub 10, 2 x VFXR3648, FN-DC, Mate 3s, PS2AC/PS2DC, Victron Cerbo S GX, 4 Volthium LiFeP04 200 AH 51.2 V batteries (800 AH), Honda EU7000 (inverter style) propane converted generator, EF6200PDEF (non inverter style) propane generator, and EF6300iSDE (inverter style) gasoline generator

FROM: 3.7 Kw array, 2 x MX60, 1 FM80, Hub 10, 2 x FX2524, FN-DC, Mate 3s, PSX240, PS2AC/PS2DC

Re: Mate3S - FNDC

Post by redsierra »

That IS WELL PUT!!!

100% correct! Life changer man!
Off Grid Lake of the Woods, ON, Canada
JRHill
Forum Emperor
Posts: 2739
Joined: Thu Feb 17, 2011 11:12 am
My RE system: 48v OB inverter and charge controller, hub and mate3s.
Location: PNW
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Re: Mate3S - FNDC

Post by JRHill »

raysun wrote: Fri Sep 29, 2023 12:02 pm For we off-grid folks, I consider the investment in LFP as mental health maintenance. 😉
This couldn't be stated better. In every possible way.
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