How old r the modules? 1.5 + is not a problem, the fan will come on but the STC is not the NOC. w/ a new modules the PTC verses STC figures is~ 20- 30 less watts. These days we all seem to b replacing older modules that have lost some umph. We would always push the SBs 1.5 as a standard practice. T wake up earlier n doze off later. Blair "Tump" May
On Tue, Jan 7, 2025, 6:40 PM Bill Battagin via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Another quandary. The old SMA SBX000US transformer inverters would cost > an arm and a leg to ship off (and returned from) somewhere to be fixed, if > even fixable at a reasonable rate. I found one online source that wanted > $4K for one of these old timers, shipping not included. I was called to > troubleshoot a 14 year old SB6000US. The screen came up with "disturbance > XFMR" and the yellow LED flashed a code that was not in the manual. I > called SMA and was told that the inverter was dead. > > I have a lead on a new sealed box SB5000US for much less but > the original STC was 6200 watts. The manual says Max DC power = 5300 > watts. Does anyone have any experience pushing these particular inverters > a little harder like this with good results? I've certainly over DC > powered a few newer SMA inverters without any problems but don't remember > if it was an issue with this model. > > Thanks, > > Bill > > Feather River Solar Electric > Bill Battagin, owner > 4291 Nelson St. (Shipping) > 5575 Genesee Rd. (USPS, UPS) > Taylorsville, CA 95983 > 530-284-7849, 258-1641(cell) > CA. C10 Lic # 874049 > Solar Powered since 1982 > Home of the Sunny Side Up > > On 1/7/2025 6:28 AM, jay via RE-wrenches wrote: > > Hi Mac, > > yeah its confusing. > > As far as I know, the fndc only controls the FNDC functions. its own > internal AUX, and AGS % which you can control through the inverter relay or > the FNDC relay. > > All the other AUX relay functions are controlled by the device the AUX is > in. > > But I could be mistaken > > jay > > > > > On Jan 7, 2025, at 7:20 AM, Mac Lewis via RE-wrenches > <re-wrenches@lists.re-wrenches.org> <re-wrenches@lists.re-wrenches.org> > wrote: > > Hi Jay, > > Adding some nuance here, and I could be mistaken about all > of the functions that get taken over by the FNDC voltage. > > When you calibrate the FNDC, it "shows" the voltage on the Mate as the > FNDC voltage if there is an FNDC in the system. I also believe that it > defaults to the FNDC voltage for some logic operations like AGS voltage > starting etc. I am not certain that LBCO uses the inverter voltage or the > FNDC voltage, probably the inverter voltage. I assume that all Mate > operations default to FNDC voltage. I would also assume that the aux relay > will rely on the charge controller voltmeter driving the relay. > > One way to detect calibration issues is looking at the device status pages > on Optics. Each device will show a voltage and that will correspond to the > device. If something looks very different, it may be worth calibrating. I > have found most of the devices need calibrating at some point, charge > controllers, inverters and the fndc. > > There are certainly voltmeters on each device, but I think some of the > logic is affected by uncalibrated FNDC and I have found it very helpful to > calibrate it carefully if I'm installing Lithium. Certainly, your SOC > calculation needs a calibrated FNDC. > > > > On Tue, Jan 7, 2025 at 6:58 AM Jay via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> Hi Mac >> >> I’m >> Going to disagree. The FNDC only provides its voltage it doesn’t populate >> to the other devices. >> You still have to set the inverter and CC separately, a poor design. >> >> Depends on which mate you’ve got where the fndc voltage is located. >> >> >> One reason I don’t like the CC voltage for aux control is that it gets >> off while higher charging due to VD. And with lithium which spend almost no >> time at lower absorb amps, it could effect the actual end volts. >> >> >> And for whatever reason I have definitely had CC accuracy wander over >> time. IE the voltage calibration gets off for some reason. >> >> Depending on the exact lithium, might not be a problem, some have wider >> upper limit than others. >> Jay >> >> >> >> >> >> On Jan 7, 2025, at 3:47 AM, Mac Lewis via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >> >> Hi Bill, >> >> Do you have a flexnet in the system? >> >> I assume that it wouldn't matter if the FM80 is calibrated but you will >> want the flexnet perfectly calibrated if you are using Lithium. It's a >> very annoying but worthwhile process. Don't drop the little nuts. >> >> Here is a paper on the procedure: >> >> >> https://www.outbackpower.com/downloads/documents/appnotes/fndc_field_cal_app_note.pdf >> >> The flexnet acts as a master voltage device so the system will default >> its voltage readings to the flexnet voltmeter. I'm not sure if the aux >> function of the FM80 uses the FM80's voltage or the flexnet voltage to >> drive the relay, but this could explain the issue. >> >> Good luck! >> >> On Mon, Jan 6, 2025 at 10:51 PM Bill Battagin via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >>> Hey Mac, >>> >>> I've tried to calibrate the voltage displayed on the Mate >>> with the Fluke on the battery bus bars but it doesn't seem to take after >>> the adjustment in "calibrate". But The Flexmax 80 does calibrate perfectly >>> to the actual battery voltage and its in the FM80 aux landing that I'm >>> using for this go-around to shut down the inverter to save the batteries. >>> >>> 'Manually' meaning.....? >>> >>> Thanks, >>> >>> Bill >>> >>> Feather River Solar Electric >>> Bill Battagin, owner >>> 4291 Nelson St. (Shipping) >>> 5575 Genesee Rd. (USPS, UPS) >>> Taylorsville, CA 95983 >>> 530-284-7849, 258-1641(cell) >>> CA. C10 Lic # 874049 >>> Solar Powered since 1982 >>> Home of the Sunny Side Up >>> >>> On 1/2/2025 5:53 PM, Mac Lewis via RE-wrenches wrote: >>> >>> Hi Bill, >>> >>> Are all your voltages calibrated? Mate, Flexmax, FM80? Where are you >>> reading the voltages? >>> >>> Does it work OK manually? >>> >>> >>> >>> On Thu, Jan 2, 2025 at 12:08 PM Jay via RE-wrenches < >>> re-wrenches@lists.re-wrenches.org> wrote: >>> >>>> Simpliphy has a very high voltage LVD. >>>> And the older OB can’t be programmed to those voltages >>>> >>>> >>>> >>>> On Jan 2, 2025, at 10:04 AM, Tyrone Houck via RE-wrenches < >>>> re-wrenches@lists.re-wrenches.org> wrote: >>>> >>>> >>>> Forgive my ignorance but why won't the vfx lbco work for lithium? >>>> >>>> >>>> >>>> >>>> On Thu, Jan 2, 2025, 8:19 AM Bill Battagin via RE-wrenches < >>>> re-wrenches@lists.re-wrenches.org> wrote: >>>> >>>>> I am trying to use the "low battery disconnect" in aux mode in a newly >>>>> installed OB FM80 CC for Li battery low voltage protection. I can't >>>>> use >>>>> the 19 year old OB VFX inverters for obvious reasons. The plan is to >>>>> run >>>>> the 12 volt output from the aux output to a NC relay to open it at 50 >>>>> VDC of the bank of SimpliPhi 3.8M batteries. 50 VDC is SimpliPhi's >>>>> recommendation for LVD. The "output" of the relay would be connected >>>>> to >>>>> the VFX's ON-OFF landings of that little green terminal block in the >>>>> AC >>>>> side of the inverter and just act as a simple switch for the inverter >>>>> to >>>>> turn it off to save the batteries. >>>>> >>>>> I'm using one of my newer FM80's as a test run and have >>>>> programmed the voltages in Low Battery Disconnect mode and then put >>>>> it >>>>> in auto mode. However, as the CC goes below the voltage set point, >>>>> the >>>>> AUX output does not turn on (time set for 5 seconds), as evidence in >>>>> the >>>>> CC's home screen and by checking for 12V at the AUX terminal block. >>>>> >>>>> Any ideas of what I'm missing here to make this work? I >>>>> know the other solution, thousands of $$ for new inverters which would >>>>> be great but these folks have already invested quite a chuck on array >>>>> replacement and charge controllers. >>>>> >>>>> Thanks for any experience with this. >>>>> >>>>> Bill >>>>> >>>>> Feather River Solar Electric >>>>> Bill Battagin, owner >>>>> 4291 Nelson St. (Shipping) >>>>> 5575 Genesee Rd >>>>> <https://www.google.com/maps/search/5575+Genesee+Rd?entry=gmail&source=g>. >>>>> (USPS, UPS) >>>>> Taylorsville, CA 95983 >>>>> 530-284-7849, 258-1641(cell) >>>>> CA. C10 Lic # 874049 >>>>> Solar Powered since 1982 >>>>> Home of the Sunny Side Up >>>>> >>>>> >>>>> -- >>>>> This email has been checked for viruses by Avast antivirus software. >>>>> www.avast.com >>>>> _______________________________________________ >>>>> List sponsored by Redwood Alliance >>>>> >>>>> Pay optional member dues here: http://re-wrenches.org >>>>> >>>>> List Address: RE-wrenches@lists.re-wrenches.org >>>>> >>>>> Change listserver email address & settings: >>>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>>> >>>>> There are two list archives for searching. 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When one doesn't work, try >>>> the other: >>>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>>> >>>> List rules & etiquette: >>>> http://www.re-wrenches.org/etiquette.htm >>>> >>>> Check out or update participant bios: >>>> http://www.members.re-wrenches.org >>>> >>>> _______________________________________________ >>>> List sponsored by Redwood Alliance >>>> >>>> Pay optional member dues here: http://re-wrenches.org >>>> >>>> List Address: RE-wrenches@lists.re-wrenches.org >>>> >>>> Change listserver email address & settings: >>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>> >>>> There are two list archives for searching. 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