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#1
Quote from: mahendra on Today at 02:16:55 PMSorry, I have not updated my classics since the last rev 2193.

Oh, OK.  Good.   Don't update it with this code.

Are you running multiple (2+)  Classics using Follow me ?
That appears to be the problem here at least.  So far as I can tell.

Thanks,
boB
#2
Sorry, I have not updated my classics since the last rev 2193.
#3
General Discussion / Re: Live PV upgrade from old t...
Last post by Riley - Today at 12:13:01 PM
I can try to access the MC-4s but at last look, they were tied in pretty far back and hard to get at.
I think with a combination of disconnecting where I can, heavy tarp covering and early morning and gloves, I should be fine...
#4

Sure looks cold there, Muskoka !   Brrrr...   That is why I am working down here in AZ for the moment.

So, new information on this latest Classic beta code.  MNGP  3798  and Classic 3800...

The Classic has been CRASHING...  So far it appears to be only the Classic 200 and when the system is using FOLLOW-ME.

So far, ENDING AMPS has been above zero amps and also possibly ONLY at night.

Please let me know if you guys are using Follow-Me.   My  single Classic 200 has been working great here UNTIL I plugged the F-Me cable from its SLAVE to its MASTER jack and F-Me was turned ON in TWEAKS.

So far TWO beta testers, including Wizbandit in Florida have had 4  Classics in a crashed state when they woke up.  More than one time for my friend here in Phoenix.  His Classic 150 has  NOT crashed yet.  Not sure why that would make ANY difference at all since the code is 99.9% the same and nothing different in code areas that should affect this.  Just voltage and current limits.

So be aware.  This is why we have betas.  Thank you for the help here !

BTW, there was a big solar flare this week.  Maybe that was it ?  LoL

boB
#5
General Discussion / Re: Live PV upgrade from old t...
Last post by ClassicCrazy - March 27, 2024, 08:53:43 PM
Is there no where in the string you can disconnect somewhere in the pv string ?  At the wire going from first or last pv to your combiner box ? If you disconnect it - pull one of the mc4 connectors apart when the combiner breaker is off , you shouldn't have any arcs . Do that for each string  Then you can work on the moving the wires from one combiner box to the other with no problem since the wires you are working on will be not be energized . After you are done , then you can simply snap the mc4 back together , and check everything with a meter . Once you are satisfied turn the combiners back on to energize .
Larry
#6
General Discussion / Re: MN15-12KW-AIO
Last post by bryhan67 - March 27, 2024, 06:25:19 PM
What will the price be?
#7
Hawke's Bay / Re: Status of web access to Ha...
Last post by bryhan67 - March 27, 2024, 02:18:26 PM
Its been 6 months is there any web access yet for the Hawke's Bay ?
#8
General Discussion / Live PV upgrade from old to ne...
Last post by Riley - March 27, 2024, 12:02:43 PM
Hi, I'm in the process of upgrading my roof top PV array from 12 panels to 18 panels (4 strings to 6 strings).

Note that these are roof top mounted and I'm not doing ground mounting for a number of reasons (plus the panels are now mounted). In order to do this, I am changing out the 4 string combiner to a 6 string combiner (MVP-6). Also note that most of the MC-4 connectors of the original 12 panel array are mounted under the array and are not accessible.

So I'm looking for safety advice/tips to do the moving of the live PV wiring from the old combiner to the new combiner. I'm well aware that the load (current flow) needs to be disconnected before opening any connections. Once that load is removed, I plan to move the strings one by one from the old combiner to the new combiner. Each string will have approximately 120vdc with a max current of 10 amps. The max current would be much less as I plan to do this combiner swap in the 3 or 4 hours of morning time when the panels are heavily shaded and should have a max current of about 1 -> 3 amps.

I am thinking I should wear electrical insulating gloves but thin enough that I can actually work effectively. I will be careful as possible but looking for other tips AND advice on good gloves. Given both neg and pos are floating with respect to ground should help things a bit but I know I shouldn't rely on this.

Thanks in advance.

Update: I think I will just cover my panels with a heavy tarp. I think I can easily cover 2 of the 3 panels per string. Getting to the 3rd panel is difficult reach.
#9
Lead Acid (Sealed and flooded) / Linde E20P Forklift Battery 48...
Last post by Firsola - March 26, 2024, 04:53:52 AM
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#10
The Rosie / Re: Grid Support while using A...
Last post by aaapilot - March 25, 2024, 03:36:27 PM
As a follow-up, when solar input charged the battery to 42%, 1% over the Grid Support number, Rosie status changed from Stanby Bulk (with AC In providing power for the load) to AC Support Bulk (AC In went to zero), & the Solar DC took over the load present as well as charging the battery.

Thanks boB for confirming w/Ryan!  I'll do some testing this week too see if Grid Support will work with a specific time parameter set for battery only use in the AC Input Control menu.

Dave