Breaking New 6000XP Firimware-1C1212

Doing more study on at what point the oscillation starts it at 56.5v. It then starts to over run that up to 57.1 or so maybe higher then down to 54v -/+.

@ray74 
Yes, I was referring to a balancer for the battery cells, but you are correct, Lead acid batteries do not need that. 

Are you able to share a video of this happening so I can share with our team and work towards a solution for this issue?

I cannot video it because last Monday I called EG4 and had them roll back the firmware too the 190DOE. The three inverters are acting better. Instead of 3 volts swing they are swing 1 volt. But that may be only because I haven't gotten good sunshine yet. Later in the day they level out to the 57 volts I have set. I will see if they work better on a very sunny day and if not, video them. What I believe is that EG4 needs to set up a specific firmware that works for non BMS or unregulated batteries. 190DOE works OK but could be much better. I still have never had the Equalizing feature work, and the battery Amp Hour setting has no effect. What I would expect is setting the Amp hour to a smaller battery would cushion the ramp up to volt setting so that it slows down as it approaches the settings voltage. Because the inverters act like a sticking mechanical governor on an engine. They it the charge volt setting so hard that it over runs the setting and then overreacts by dropping off too drastically. Some of the problem could be caused by the ever-changing Mppt's and the lag in reacting with the battery chargers to the battery volt reading. What I know is it always seems to just bang up to set voltage and turn off hard because the inverter has some kind of hard line against over charging the batts. That certainly does not need to be the case with lead acid. And the AMP HOUR setting should give me a setting that determines that cushioning. I need a shock absorber in the system. By the way even with 190DOE the steadiness is dependent on where I set my charge voltage(57V). It also seemed to be true on the new firmware and that number was 55.9 volts, way too low for 48-volt lead acid.

Eric EG4 here is the video you asked for. This video is just after the voltage hits the voltage set point. All three 6000XPs are doing the same thing. This continues for a while then they seem to settle down. What appears to happen is that at the time the inverters go into float mode then they settle down to rock solid. Keep in mind that my bulk is at 57.9 and float is at 57.8. I will send screen pic of batt voltage from data after a while.

6000Xp

screen shot shortly after settling down

@ray74 

Thank you for that. When you have a chance, could you also share some photos of the batteries and how the batteries are connected to each other and to the inverter?

I want to make sure I have all the necessary information before taking this to our battery technicians to work towards a solution.

Eric, to be honest, I have already told you in detail what is happening from my prospective. If you are truly interested in a fix, then EG4 needs set up their own lead acid or non-communication lithium battery (cause others are having this problem too) system. So, you can actually get to a fix. These 6000xps are billed to be for Lead acid batts and they are not. It does not matter if I turn on one 6000xp only or anyone of them it still surges. So EG4 only needs to set up a simple system to work on this problem.

Posted by: @ray74

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Lead acid, two 24-volt fork-lift batteries wired in parallel. All three inverters are individually hooked across the 48 volts. I should state that the fluctuations are actually over three to five seconds and that changes a bit at lower battery charge settings. Also, I recently added another 6000xp to my two original and updated all three to ccaa-1C1212 when this oscillation started happening. This also happened when first installing the two in the beginning and after EG4 updated me to ccaa-190DOE those first two settled down and ran at 56.9 to 57v after a bit of time. Now even if I shut down all but one inverter it also keeps fluctuating.

I mean batt are in series. two 24 volts =48v