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About 9xsolar

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  1. Alright, I resetup everything from scratch again and now the Multi doesn't support loads at all (not even from the battery) and no matter what limit I put in RPI for discharge it doesn't do anything. Also, now the voltages are different. (screenshot below with no limits on discharge, and plenty of sun and yet nothing's happening) Here's the networked operation charge voltage from the MPPT : Setting from VEConfig : DVCC is enabled right now. I will pm you my email. Edit ---------------------- Reverted back to my old SDCARD for the time being and everything works as intended (with your script)
  2. I can confirm Assistant loaded (ESS) is up-to date. Gotcha - I also see that the wattage displayed (especially for Grid meter) are 1s delayed. L1/L2/L3 values below the main value appears faster than the global value. Just nitpicking as this didn't happen before too. Thanks, that explains number 7. I tried to power cycle everything (including the MPPT) and had no effect on this. In addition, I see that the MPPT flashes "absorption" orange LED in-between the blue "float" LED that flashes in accordance to "being in control of ESS". I haven't seen this before, and this happens to be at the same time when I see "discharging" happening as PV power drops. I've noticed this to drop even when there's no change of sun (i.e no cloud). Got one more customer in the link below who mentioned it too : https://www.victronenergy.com/live/ess:ess_mode_2_and_3 (had to attach screenshot as Disqus doesn't allow linking by comment) I also double checked the values in VEConfigure and they're lower than what's in the MPPT settings. For now, I have disabled DVCC and will try to monitor tomorrow to see how it works.
  3. Yes, I updated the inverter to 430 (with ESS Assistant). Here's the exact steps I did: Update MPPT to latest (via Victron bluetooth) (reconnected to old RPI SDCARD after update and it worked) Attempt to update Battery monitor (no update) Disconnected inverter from old RPI SDCARD Updated inverter to 430 after backup, and reconfigured using VEConfig - also added back ESS assistant Replaced the SDCARD with latest image you linked, added ssh, updated wifi, etc Connected everything to new image on RPI Now, I have : DVCC enabled / STS shared temperature sense enabled Mode - Keep batteries charged Grid Meter Installed (yes) With this, the inverter only floats the batteries using very little solar. When I move back to Optimized, it uses all available solar. I use this mode in combination with your script above in order to use the additional solar available with 100% SOC (float). However, this is no longer stable unlike before, as the inverter constantly moves from "float" to "discharging". Granted, there's way too much cloud movement today, but I haven't seen this behavior before. Added screenshot (shows discharging issue) whilst using the script. Screenshot that shows excess energy not being used when using "Keep batteries charged". Both taken at same time, so you can see difference in power. Edit. I now see a weird 'ESS #7' in the image below, any idea what that is?
  4. Thanks again - I've updated everything and have enabled DVCC and 'Keep batteries charged'. However, that doesn't seem to use the excess solar available. Instead, it only uses the exact amount required to float/absorb the batteries. When I use 'Optimized with battery life' I can see the solar power increase drastically (200w to over 700w). Is this normal? Edit: Inverter keeps changing from 'float' to 'discharging' constantly (and I can see battery discharge for a few secs and charge again whenever I use the script above).
  5. I don't have the DVCC feature - looks like I need to spend some time upgrading the firmware of Inverter, MPPT, Battery monitor(?) along with my PI. It's been quite a while. I'm on 2.09~03. Thanks. But if I understand it correctly, it's still a lot low if we compare it to Fronius (at least in the price point). If I for some reason get Fronius in the future, will it work when there's a power outage when paired with Victron?
  6. @plonkster Just to update and a few questions - the system has been working pretty good so far. I only had to intervene to make adjustments to the temperature sensor; it seems to be causing too many errors (only happened a few times so far) and whenever I just move the cable a little bit on the battery, it goes back to normal. Now that rainy season is approaching - I tried to make the battery stay at 100% and use solar only directly. I noticed that when the batteries are floating yesterday, they still go back into the Bulk state the next morning, and Absorption state, and so on. Why can't they stay in Float when they're not used? I feel like I'm putting in too much into an already full battery. Any tips appreciated - thanks :) Also, we have Grid-tie getting popular here and I might have the option of enabling this (although I'm not 100% sure if I should, too much bureaucracy) - what do you think theoretically, the amount of power I can feed back into the grid with my MultiPlus? Is it going to be 2200w or perhaps much higher?
  7. In the inverter or the RPI? In case of former, am I theoretically reducing the lifespan of the flash inside the inverter by too many read/writes? Should I be worried? Also, my batteries never reach float (usually they'll just be in Absorption for a few hours) and then sun will be down by then, and the cycle repeats. Should I make sure they float more often? Can we make adjustments to your script so that the batteries are being fed whatever they want to eat, and only the remaining gets sent to load? Any tips appreciated The firmware has been amazing, the overview screen never defaulted; and more importantly, neither the MPPT or the inverter disconnected from the RPI even once!
  8. So far so good, I have not seen any weird behaviors so far. Edit : Started monitoring w/ your script - so far so good too! I've changed the default 60s to 5s as I felt more updates the better as the clouds here are wrecking havoc.
  9. Bingo - works in release candidate v2.09~3 I've had some issues with the previous firmware, like randomly the screen view (?) changes to the default one randomly throughout the day as if the venus hardware itself was restarted (which is wasn't). Plus, Multi and the MPPT will constantly disconnect and reconnect randomly throughout the day... nothing serious, but still concerning. Hope this firmware works better haha.
  10. @plonkster - I've updated the venus image to version 2.08 (directly via venus, no manual flash) and since then, Multi has disappeared from venus. I've rebooted Multi, tried disconnecting all the cables and connecting one at a time. Energy meter, MPPT and BMV are the only ones connecting. Should I upgrade the firmware for the Multi? I've upgraded the firmware of the MPPT from 1.23 to the latest via bluetooth; obviously can't do that to the Multi.. any assistance appreciated. Thanks! Edit: Rolled back firmware to 2.07~26 and Multi connects immediately. Super awesome to have backup firmware within venus, super helpful!
  11. Sorry for the rather long delay! Haven't been in the country and couldn't do this remotely ;( Will experiment and get back - unfortunately the weather has not been so kind lately and I'm barely charging the top 20% battery usage these days.
  12. That would be something that will make this perfect! Right now, I'm finding that as long as I keep the battery charging in Bulk, the MPPTs are maxed - things get tricky once they enter Absorption or Float in which case I manually change the Max Inverter power to keep things balanced. It seems I'm just too paranoid to use batteries above their C20 rate, and the ability to maintain battery + grid in parallel is something that I absolutely love so far. Week long data:
  13. This still ensures the Inverter continues to run, except it will be in bypass mode and is ready to kick-in when the Grid fails, right? I think I may have triggered that as I was messing around the SoC levels. In that case, the Min Discharge SoC if set to 80%, means if it drops less than that (let's say, Grid failure) and then Grid comes back, the inverter will charge to 80% and then leave it alone? Is that how it works? What if I don't want the inverter to charge anything at that level, and only want it to interfere at the Sustain level? Edit> You've talked about it just before, I misread! What if the Min Discharge SoC is 100% - will that trigger the MPPT to power down? Because at some point in my tinkering, the MPPT went all the way down to 0W. I don't remember if it was when I had it on 100%.
  14. After fiddling with settings such as these > MinSoC @ 80% Limit Inverter Power to ON Max Inverter Power @ 350w The Inverter started to utilize the exact battery settings and supposedly does the balancing act : After reaching 80% it seemed to have correctly started utilizing Grid more, although I'm not sure if this battery usage is fair (i.e randomly uses 80/40/20w as shown below), is that like a float charge and is it important? I thought it will completely stop battery usage, not trickle use it. Or is that the usage requirement for the inverter itself? Finally, since I have enabled Max Inverter Power - could you share me your snippet/cronjob so I can set something similarly? Otherwise I guess even in the morning the max I'd get out of my panels is 350w haha. I got '2' - but that's after I fiddled and got the inverter to stop charging. Will this value change on its own? Also, here's the ideal setup I'm looking for > Don't use battery in the morning whenever there's PV available. When PV is missing once in a while, take the requirement from Grid first and not battery. Charge battery from PV only. i.e loads get second preference. I realize that my first requirement is kinda vague, and hence we setup for the top 20% (i.e discharge SOC 80%) to use whenever there's shortage etc. I thought, in ideal world, I'll use this 20% in the evening when there is no PV whatsoever.
  15. You asked, I shall deliver. Completed install just now. Took some time to figure out how to install ESS assistant, I was trying to change settings on VEConfig and was scratching my head on why it doesn't change or save. Then realized I need to send the settings back instead of expecting it to save on its own, haha. RPI venus setup : Now, I'm scratching my head as to how the hell do I get the inverter to stop using the batteries and rely on grid? When I change the discharge battery soc to 100%, it doesn't discharge. But by doing so, the PV charger dials down and I don't get anything out of it. Help? EDIT > Changed Grid Setpoint value from 50w to 850w and everything looks OK so far! However, how do I stop from charging the batteries using Grid? I only want to charge them using solar. BatteryLife is set to self consumption but I was assuming it will help. Also, I changed the port and added an usb extension, but that spawned multiple devices on venus which I'm unable to remove? How do I remove them? Thank you so much for your help so far!


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