LV6548 shutting down with EG4 Chargeverter & blown Solar Assistant

medic149 · Dec 26, 2023

Initial info is what I sent to Signature Solar tech support

Hello

I have been using the chargeverter for a couple of months now. I have an Lv6548 inverter and 3 Eg4 LL 48v batteries and have Solar Assistant connected to monitor the entire system.

Yesterday when turned on the chargeverter breaker the LV6548 immediately shut down. All batteries were on a s seemed fine. The same exact thing happened today as well. After turning off and then on the batteries, the inverter started up with no issue. Only problem now is that the Solar Assistant no longer works.

Did the chargeverter blow the Solar Assistant?

Any idea what is going wrong?

Does it matter if the chargeverter breaker is turned on before or after the generator feeding it is started?

Thank you
Andy
......................

I did have another post that discussed my issues with initial setup. Using a Honda generator 2,200i I could only get 23 amps of charging. However I did purchase a Westinghouse 9500 generator and can now get up to 63 amps but no higher. I am thinking I can't get much higher in amps maybe do to the wire which is for a 30 amp RV Connection. But I can deal with that. It's still charges way faster than the Honda did.

timselectric · Dec 26, 2023

The Chargeverter has capacitors, that are charged as soon as a battery is connected. This can cause the battery voltage to sag briefly. If the battery voltage was already close to the shutdown setting of the AIO. Then it could have triggered the shutdown. Try switching it on at a higher battery voltage.

medic149 · Dec 26, 2023

timselectric said:
The Chargeverter has capacitors, that are charged as soon as a battery is connected. This can cause the battery voltage to sag briefly. If the battery voltage was already close to the shutdown setting of the AIO. Then it could have triggered the shutdown. Try switching it on at a higher battery voltage.

Yesterday the batteries were at 80% and 63% today.....

timselectric · Dec 26, 2023

medic149 said:
Yesterday the batteries were at 80% and 63% today.....

It doesn't sound like a battery voltage issue.
Unless it's a very small battery.

Zapper77 · Dec 26, 2023

Start the generator first. If the CV capacitors are drained the battery BMS will detect the inrush as a short and shutdown.

medic149 · Dec 26, 2023

timselectric said:
It doesn't sound like a battery voltage issue.
Unless it's a very small battery.

Agreed. It sounds to me like something with the Chargeverter. Wierd since the Chargeverter connects to batteries and not directly to the LV6548.

Will be interested to see what Signature Solar says.

medic149 · Dec 26, 2023

Zapper77 said:
Start the generator first. If the CV capacitors are drained the battery BMS will detect the inrush as a short and shutdown.

Thank you!

timselectric · Dec 26, 2023

My Chargeverters are permanently connected. And I never turn off the on board breaker. This keeps the capacitors charged at all times.
I only turn on/off the AC feed to it.

medic149 · Dec 26, 2023

timselectric said:
My Chargeverters are permanently connected. And I never turn off the on board breaker. This keeps the capacitors charged at all times.
I only turn on/off the AC feed to it.

I was initially doing this as well, but was wondering if it was drawing much of anything on the batteries.

Have you noticed if it draws much? I might do this again as well.

ricardocello · Dec 26, 2023

timselectric said:
My Chargeverters are permanently connected. And I never turn off the on board breaker. This keeps the capacitors charged at all times.
I only turn on/off the AC feed to it.

Have you seen any leakage when the chargeverter is unplugged with its breaker on (still connected to the DC bus)?
I guess I could go measure that with a clamp.
@medic149 beat me with the same question by seconds

medic149 · Dec 26, 2023

ricardocello said:
Have you seen any leakage when the chargeverter is unplugged with its breaker on (still connected to the DC bus)?
I guess I could go measure that with a clamp.

I am actually going to check on that later or tomorrow

timselectric · Dec 26, 2023

medic149 said:
I was initially doing this as well, but was wondering if it was drawing much of anything on the batteries.

Have you noticed if it draws much? I might do this again as well.

It draws less than I can measure. So, I just guess 5w.

timselectric · Dec 26, 2023

ricardocello said:
Have you seen any leakage when the chargeverter is unplugged with its breaker on (still connected to the DC bus)?
I guess I could go measure that with a clamp.
@medic149 beat me with the same question by seconds

I'm not sure what you mean by "leakage".
It draws very little from the battery. (5w or less)
And there is no voltage on the AC side from it.

Zapper77 · Dec 26, 2023

I agree. I wrapped a wire around my clamp multimeter a few times and the reading wasn't even 0.1 amps

ricardocello · Dec 26, 2023

timselectric said:
I'm not sure what you mean by "leakage".
It draws very little from the battery. (5w or less)
And there is no voltage on the AC side from it.

By leakage, I meant that there are likely bleed off resistors on the DC output rails for the holdup capacitors.

timselectric · Dec 26, 2023

ricardocello said:
By leakage, I meant that there are likely bleed off resistors on the DC output rails for the holdup capacitors.

It's negligible.

ricardocello · Dec 26, 2023

timselectric said:
It's negligible.

Indeed! I have a Victron shunt acting as a DC Meter on the Chargeverter.

AC has been unplugged for days.
I flipped the breaker on, and here's what I got.
I teeny blip to -0.3A for a few seconds to charge its capacitors, then back to 0.0A.

Screen Shot 2023-12-26 at 7.57.59 PM.png

Negligible it is.

ricardocello · Dec 26, 2023

timselectric said:
It's negligible.

So knowing that it's ok to leave the breaker on, now I'm tempted to put a relay or contactor to turn on the Chargeverter AC remotely with a GPIO.

Quattrohead · Dec 26, 2023

medic149 said:
Wierd since the Chargeverter connects to batteries and not directly to the LV6548.

How are they connected then ???
All items connected to the 51.2v are inter-connected.
How has your Pi died, blowed up/no power or maybe the memory card failed.
How was it getting its power ?
How was it connected to the inverter ?

medic149 · Dec 26, 2023

Quattrohead said:
How are they connected then ???
All items connected to the 51.2v are inter-connected.
How has your Pi died, blowed up/no power or maybe the memory card failed.
How was it getting its power ?
How was it connected to the inverter ?

How are they connected then ??? Chargeverter positive to battery 3 and negative to battery 1.

All items connected to the 51.2v are inter-connected.

How has your Pi died, blowed up/no power or maybe the memory card failed. No longer is transmitting Bluetooth signal. Haven't tried hooking to laptop yet to see if any data is on it. The first SA I had never transmitted Bluetooth signal and they replaced it. This one is a little over a year old.

How was it getting its power ? SA is connected directly to the battery back on battery 3.

How was it connected to the inverter ? Chargeverter connected directly to batteries. SA is connected via USB cable from SA to Inverter.

timselectric · Dec 26, 2023

ricardocello said:
So knowing that it's ok to leave the breaker on, now I'm tempted to put a relay or contactor to turn on the Chargeverter AC remotely with a GPIO.

That's how mine is working.

Quattrohead · Dec 26, 2023

medic149 said:
How are they connected then ??? Chargeverter positive to battery 3 and negative to battery 1.

And inverter connected to batteries how ?

medic149 said:
SA is connected directly to the battery back on battery 3.

Via what to reduce the voltage from 51.2v to 5v ?
I assume you did power cycle the Pi....disconnect the USB connections and just power the Pi on it's own.

ksmithaz1 · Dec 26, 2023

medic149 said:
Yesterday when turned on the chargeverter breaker the LV6548 immediately shut down. All batteries were on a s seemed fine. The same exact thing happened today as well. After turning off and then on the batteries, the inverter started up with no issue. Only problem now is that the Solar Assistant no longer works.

If I turn on my CV, it sagged my 30KWH rack for a brief moment, enough to dim the lights in the house when the inverter was running. I control mine with a relay on the AC side, and leave the breaker on. Either turn on the AC first or leave the DC side on. I seeded by turning on the AC, then the breaker, then left the breaker on. I toggle power at the AC side from a software switch. I rarely use it but it works well when I do.

SignatureSolarJess · Dec 27, 2023

Hi @medic149 It looks like one of our associates has just assigned your email to himself and will be getting back to you shortly! Not that this lot on here aren't absolute units helping already! I'll give him the link to this thread, maybe it will help speed up troubleshooting!

wildbillpdx · Dec 27, 2023

medic149 said:
How are they connected then ??? Chargeverter positive to battery 3 and negative to battery 1.

Is this working well? I have a Chargeverter waiting to be connected. Was going increase the cable opening to 3/8" using my drill press to fit my bus bar but didn't want to do anything that might void the SS warranty.

LV6548 shutting down with EG4 Chargeverter & blown Solar Assistant

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