Posted March 13, 20196 yr Hi, I installed an Energy meter onto my Infinisolar, but it does not seem to be throttling the inverter’s PV production. I followed all instructions as per the manuals, but as most of you probably know, the manuals aren’t always that clear... Maybe somebody can assist with proper instructions and fault finding ideas please? Thank you.
March 13, 20196 yr Frodo, there are tons of thing that could go wrong. The first rule is that the grid limiting with the modbus meter works ONLY in the Grid-Tie with Backup (II) mode. Attached is the guide that's a bit clearer than the original manual. It's for 3phase unit, but the concept is the same. InfiniSolar Modbus card II-manual.pdf InfiniSolar 10kW Modbus Grid limiting Installation guide.pdf Edited March 13, 20196 yr by Youda
March 19, 20196 yr I’m interested in this too for my Renesola Replus which has stuff about the Modbus II card in the manual but doesn’t really document how to set it up. Slightly worried that the support wasn’t really carried over from the Voltronic design into this version but was still left in the manual. Only way to find out is to try it I guess. @Frodo which exact inverter do you have? Seem to think it might be a Replus.
May 8, 20204 yr Hi, I intent to install an energy meter onto Infinitysolar E5.5. Over the internet I found only examples with Eastron SDM630. Will my inverter work with SDM 120 or SDM230? I have 1-phase system. Thank you.
May 9, 20204 yr 5 hours ago, RikH said: What is the benefit of this meter and modbud card installation? Feedback excess solar to loads connected to the grid like geyser and stove.
May 11, 20204 yr On 2020/05/09 at 7:11 AM, RikH said: What is the benefit of this meter and modbud card installation? According to MPP Solar support, it should resolve this issue. Edited May 11, 20204 yr by sanjinr
May 11, 20204 yr On 2020/05/09 at 12:28 PM, francois said: Feedback excess solar to loads connected to the grid like geyser and stove. Ok, but I assume that is done only in situations where you don't want to feed-back to the grid? (i.e. SA) 36 minutes ago, sanjinr said: According to MPP Solar support, it should resolve this issue. Ok here is what you asked there: Hello, I have PV system with Infinisolar E5.5, 14x365W PV panels (5110W) and 400Ah OPzS battery (48V). I have to limit feed-in to the grid power to 3600W, which I did by setting parameter "Max. feed-in grid power". The problem is, by limiting feed-in power, I also limited PV panel input to value "Max. feed-in grid power" + ~500W, regardles my household load. For example, if I set feed-in power to 3600W, and have load 2000W, PV panel input is limited to 4000-4100W, so I feed to utility grid 2000-2100W max. If I set feed-in power to 4000W, and have load 2000W, PV panel input is limited to 4400-4500W, and feed to utility grid 2400-2500W max. And so on... Sure, I can raise "Max. feed-in grid power", but when my load drop, I can exceed 3600W feed to grid power, which is not acceptable. Is this normal behavior for this inverter? Maybe it's interesting for this thread to take it here. If this is normal behaviour I don't know but why do you want to limit feed-back to 3600 W?
May 11, 20204 yr Just now, RikH said: Ok, but I assume that is done only in situations where you don't want to feed-back to the grid? (i.e. SA) Yes 😀
May 11, 20204 yr 2 minutes ago, francois said: Yes 😀 Ok I understand. Seems useless to me when you can push back. Would be interesting to see how this turns out to function with @sanjinr's inverter.
May 11, 20204 yr 4 minutes ago, RikH said: Ok I understand. Seems useless to me when you can push back. Would be interesting to see how this turns out to function with @sanjinr's inverter. Municipality pays almost nothing for pushing back to the grid and lots of hassle to get it approved, so not really useless.
May 11, 20204 yr 5 minutes ago, francois said: Municipality pays almost nothing for pushing back to the grid and lots of hassle to get it approved, so not really useless. Yes I understand what you mean but I should have been more clear when I said "when you can push back". I meant of course when you can push back as in countries where it is profitable. Edited May 11, 20204 yr by RikH
May 11, 20204 yr 1 minute ago, RikH said: Yes I understand what you mean but I should have been more clear when I said "when you can push back". I meant of course when you can push back as in countries where it is profitable. 👍
May 11, 20204 yr 1 hour ago, RikH said: Maybe it's interesting for this thread to take it here. If this is normal behaviour I don't know but why do you want to limit feed-back to 3600 W? In my country (Croatia) we can now compensate purchased energy with energy pushed back (we buy and sell at the same price), but at two conditions: Have to be net buyer on an annual basis (consume more then produce). Max. push back current limited to 16A per phase (~3600W on 230V grid system)
May 11, 20204 yr 5 minutes ago, sanjinr said: In my country (Croatia) we can now compensate purchased energy with energy pushed back (we buy and sell at the same price), but at two conditions: Have to be net buyer on an annual basis (consume more then produce). Max. push back current limited to 16A per phase (~3600W on 230V grid system) Ok, so it is the same as in the Netherlands. When we push back more then we use we get a lower rate and also a tax cut so last year I have let a heater run in the garden in december to get my own usage up for that reason. This is how it works when government is interfering... Another thing, what is the value of the main fuse in your house, 25A? That is my situation and I simply push back 22A with my inverter. Nobody knows what my peak push back current is so why should you make it that expensive and complicated for yourself?
May 11, 20204 yr 6 minutes ago, RikH said: Ok, so it is the same as in the Netherlands. When we push back more then we use we get a lower rate and also a tax cut so last year I have let a heater run in the garden in december to get my own usage up for that reason. This is how it works when government is interfering... Another thing, what is the value of the main fuse in your house, 25A? That is my situation and I simply push back 22A with my inverter. Nobody knows what my peak push back current is so why should you make it that expensive and complicated for yourself? Agree... 😅 Main fuse is 40A. I not sure I understand... How do you mean, nobody know what your peak push back current is? An energy meter form my utility company can measure it.
May 11, 20204 yr 9 minutes ago, sanjinr said: An energy meter form my utility company... What type do you have? Picture?
March 4, 20214 yr On 2020/05/08 at 9:34 AM, sanjinr said: Will my inverter work with SDM 120 or SDM230? How did this go? I'm planning on using an SDM230-Modbus energy meter with an InfiniSolar V III 3K for 100% self-consumption.
March 11, 20214 yr Not good. Still not working...😕 I tried SDM230 and SDM630v2 (it seems version 2 SDM630 is not compatible 🙄), but my inverter can't communicate with them.
April 30, 20213 yr Update... I finally made this work. My Infinisolar E5.5 and SDM630v2 are communicating. The problem was in modbus card. There are two types. I had wrong one. Thank you Riogrande75 👍 Edited April 30, 20213 yr by sanjinr
May 8, 20213 yr Update 2... Energy meter is communicating (phone symbol shown on display), but my issue is still unresolved. I set "Max feed-in grid power" to 3700W. This should limit feed-in grid power. Instead, it limits PV input power to ~4300W, regardles of my household load.
August 14, 20213 yr On 2021/04/30 at 2:45 PM, sanjinr said: Update... I finally made this work. My Infinisolar E5.5 and SDM630v2 are communicating. The problem was in modbus card. There are two types. I had wrong one. Thank you Riogrande75 👍 Which Modbus card did you use?
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