Nick Welgemoed Posted September 3, 2021 Share Posted September 3, 2021 (edited) Hi there Any one got Bms working in above setup? 1 xGrowatt inverter and 2 x bluenova Batteries? I am new to all of this. Edited September 3, 2021 by Nick Welgemoed attach Picture Quote Link to comment Share on other sites More sharing options...
Brendan1 Posted October 8, 2021 Share Posted October 8, 2021 Hi ,did you come Wright ? I'm having the same issue. What did you do ? Quote Link to comment Share on other sites More sharing options...
Kalito Posted October 10, 2021 Share Posted October 10, 2021 On 2021/09/03 at 6:56 PM, Nick Welgemoed said: Hi there Any one got Bms working in above setup? 1 xGrowatt inverter and 2 x bluenova Batteries? I am new to all of this. Menu 05 of Growatt lets you select Li (Lithium) and in the submenu which enables you need to select the communication protocol. So you need to know the Blue Nova protocol for Growatt also make sure the RJ45 cable between BMS and inverter is connected and that you crimp the correct pin-out for your battery side if different for the normal cable. Your batt should have the pin out assignment. Quote Link to comment Share on other sites More sharing options...
Wozza Posted November 8, 2021 Share Posted November 8, 2021 On 2021/10/10 at 6:55 AM, Kalito said: Menu 05 of Growatt lets you select Li (Lithium) and in the submenu which enables you need to select the communication protocol. So you need to know the Blue Nova protocol for Growatt also make sure the RJ45 cable between BMS and inverter is connected and that you crimp the correct pin-out for your battery side if different for the normal cable. Your batt should have the pin out assignment. Do you have the Blue Nova Protocol for Growatt? Quote Link to comment Share on other sites More sharing options...
Tim003 Posted November 8, 2021 Share Posted November 8, 2021 @Nick Welgemoed what is the part number of your battery? BN52V-100-5.2k-BP of BN52V-100-5.2k-DU? Quote Link to comment Share on other sites More sharing options...
Wozza Posted November 8, 2021 Share Posted November 8, 2021 2 minutes ago, Tim003 said: @Nick Welgemoed what is the part number of your battery? BN52V-100-5.2k-BP of BN52V-100-5.2k-DU? It’s the BP… Tim003 1 Quote Link to comment Share on other sites More sharing options...
Tim003 Posted November 8, 2021 Share Posted November 8, 2021 1 minute ago, Wozza said: It’s the BP… @Wozza thanks for speedy response, I'm planning on buying one from someone. How's your experience with the battery so far? Are you only using it for loadshedding backup or are you cycling it daily(or only at night)? Quote Link to comment Share on other sites More sharing options...
Wozza Posted November 8, 2021 Share Posted November 8, 2021 1 minute ago, Tim003 said: @Wozza thanks for speedy response, I'm planning on buying one from someone. How's your experience with the battery so far? Are you only using it for loadshedding backup or are you cycling it daily(or only at night)? Only for Loadshedding backup…it’s more than sufficient for my needs..very happy with my purchase….. Tim003 1 Quote Link to comment Share on other sites More sharing options...
Buyeye Posted November 9, 2021 Share Posted November 9, 2021 10 hours ago, Wozza said: Only for Loadshedding backup…it’s more than sufficient for my needs..very happy with my purchase….. I have the inverter in the original post and it absolutely hates a full lithium battery. It goes into error 8 if I forget to discharge the battery. Which is solved by turning it off and on as with most electronics. Quote Link to comment Share on other sites More sharing options...
Wozza Posted November 9, 2021 Share Posted November 9, 2021 Just now, Buyeye said: I have the inverter in the original post and it absolutely hates a full lithium battery. It goes into error 8 if I forget to discharge the battery. Which is solved by turning it off and on as with most electronics. That’s not good….. Quote Link to comment Share on other sites More sharing options...
Nick Welgemoed Posted January 29, 2022 Author Share Posted January 29, 2022 On 2021/11/08 at 10:31 PM, Tim003 said: @Nick Welgemoed what is the part number of your battery? BN52V-100-5.2k-BP of BN52V-100-5.2k-DU? BN52V-100-5.2k-DU Hi Quote Link to comment Share on other sites More sharing options...
Nick Welgemoed Posted January 29, 2022 Author Share Posted January 29, 2022 On 2021/11/08 at 6:29 PM, Wozza said: Do you have the Blue Nova Protocol for Growatt? Hi there Not at all. Blue Nova not very helpfull Quote Link to comment Share on other sites More sharing options...
Nick Welgemoed Posted January 29, 2022 Author Share Posted January 29, 2022 On 2021/10/08 at 8:13 PM, Brendan1 said: Hi ,did you come Wright ? I'm having the same issue. What did you do ? Hi. No luck so far Quote Link to comment Share on other sites More sharing options...
HanroS Posted May 6, 2022 Share Posted May 6, 2022 Did you use Solar Assistant or ICC for monitoring your system remotely by an chance? Quote Link to comment Share on other sites More sharing options...
Gerrie Grotman Posted July 3, 2022 Share Posted July 3, 2022 I see blue nova said they should have support for growatt soon, on their Facebook page. They aimed for support mid June 2022 "if all goes well". I guess it did not go that well. Quote Link to comment Share on other sites More sharing options...
Wozza Posted July 4, 2022 Share Posted July 4, 2022 Ironic you make mention of this…..I’m about to turf out my Growatt and put in a Sunsync…..have just added a secondary battery thanks to loadskommeling….but having issues with charging now……somehow the 2 x batts don’t like the Growatt….. Quote Link to comment Share on other sites More sharing options...
Nick Welgemoed Posted July 16, 2022 Author Share Posted July 16, 2022 Hi. No feedback from Blue Nova... Quote Link to comment Share on other sites More sharing options...
McWidowmaker Posted August 1, 2022 Share Posted August 1, 2022 Hi, you need this to make it work with the Growatt: https://omegawattenergy.co.za/blue-nova-battery-monitor-and-control-bmac/ This unit manages can bus communication via serial comms with the Growatt as well as a few other inverters. Don't need it for the Victron. Can always contact Dirk Nieuwoudt at Blue Nova in Cape town. He's their technical manager and a great source of information. ([email protected]). Quote Link to comment Share on other sites More sharing options...
RikusW Posted August 17, 2022 Share Posted August 17, 2022 (edited) We used https://solar-assistant.io/ and then tuned the battery voltages until it reached 100 SoC, works well enough now without a BMS cable, but I'll try to develop a Pylontech emulator to connect the solar assistant info to the inverter, at least there are some documentation for that protocol. Battery type User 2 Charger source priority Solar first Back to battery voltage 51.0 V (not tuned yet but works) To grid battery voltage 49.0 V (not tuned yet but works) Shutdown battery voltage 46.5 V Battery float charge voltage 55 V There are a 0.4V drop over the cables at 30A , so 55.1V+cable drop of your installation, we have 1m of 35mm2 Battery bulk charge voltage 55 V (previously I used 55.5V, then 55.4V but 55V seems to work just as well since charge is 54.6V) Max charge current 30.0 A Max AC charge current 20.0 A Edited September 24, 2022 by RikusW Found lower voltages to work as well Quote Link to comment Share on other sites More sharing options...
zsde Posted August 17, 2022 Share Posted August 17, 2022 (edited) On 2021/11/09 at 8:54 AM, Buyeye said: I have the inverter in the original post and it absolutely hates a full lithium battery. It goes into error 8 if I forget to discharge the battery. Which is solved by turning it off and on as with most electronics. What Lithium Protocol do you use as I have zero issues except the Growatt algorithms that force an immediate 0,5 to 1A discharge once the battery is 100%. It then powers the inverter from the battery, whether there is solar or not, till the battery hits >95%. Then it charges the battery back to full. Here it is from the Horse's mouth so to speak. I had a lengthy argument about that with the International Rep (Amos) in China. Edited August 17, 2022 by zsde Scorp007 1 Quote Link to comment Share on other sites More sharing options...
RikusW Posted September 24, 2022 Share Posted September 24, 2022 (edited) I just managed to get the BMS CAN connection working for Growatt-SPF5000-ES and BN52V-100-5.2k-DU. Now Settings 12,13 and 21 is in SoC % I connected an oscilloscope to the CAN port on the BlueNova and saw the bitrate being 250k then connected a CAN tap I built for work to the port and got a protocol dump which looked very similar to the Pylontech CAN protocol. Guessing the Victron 250 was for the bitrate the Victron 500 setting would be 500k which is what Pylontech runs at. It works after setting the Growatt to protocol L52. Settings: Victron 500 on the battery, protocol L52 on the inverter. (edit: Use Goodwe instead it is more similar to Pylontech, see below) I made 120 Ohm termination plug for the battery's second CAN port, but can be bought for R80 for two. Pinout: CAN-H battery = 7 inverter = 4 CAN-L battery = 8 inverter = 5 Just the two wires no other connections made on the RJ45 plugs Edited September 30, 2022 by RikusW Updated BlueNova protocol setting Quote Link to comment Share on other sites More sharing options...
RikusW Posted September 24, 2022 Share Posted September 24, 2022 (edited) https://www.bobali24.de/bobali_files/photovoltaik/estg/pdf/The list of compatibility between battery and Growatt Off-grid Inverter 2020.06 V1.4.pdfThe list of compatibility between battery and Growatt Off-grid Inverter 2020.06 V1.4.pdf Edited September 24, 2022 by RikusW Quote Link to comment Share on other sites More sharing options...
RikusW Posted September 24, 2022 Share Posted September 24, 2022 BlueNova BN52V-100-5.2k-DU CAN dump - Victron 250 dip switch setting - 250kbps 849 0000351 - 22 02 f4 01 e8 03 d6 01 - BmsLimits 0222 - 54.6 V charge voltage 01f4 - 50.0 A charge current max 03e8 - 100.0 A discharge current max 01d6 - 47.0 V discharge voltage min 853 0000355 - 5e 00 64 00 b8 24 - BmsSoc 005e - 94 % SoC 0064 - 100 % SoH 24b8 - 94.00 % SoC 854 0000356 - b6 14 c4 ff d5 00 - Battery status 14b6 - 53.02 V ffc4 - -6.0 A 00d5 - 21.3 C 858 000035a - a8 aa 02 02 20 80 02 02 - BmsAlarm ??? Vector dbc format https://www.csselectronics.com/pages/can-dbc-file-database-intro VAL_TABLE_ AlarmWarningValues 3 "Not Supported" 2 "InActive" 1 "Active" 0 "Not Supported" ; 2 SG_ BMS_Alarm_OverVoltage : 2|2@1+ (1,0) [0|3] "" Vector__XXX 2 SG_ BMS_Alarm_UnderVoltage : 4|2@1+ (1,0) [0|3] "" Vector__XXX 2 SG_ BMS_Alarm_OverTemp : 6|2@1+ (1,0) [0|3] "" Vector__XXX 2 SG_ BMS_Alarm_UnderTemp : 8|2@1+ (1,0) [0|3] "" Vector__XXX 0 SG_ BMS_Alarm_BmsComms : 22|2@1+ (1,0) [0|3] "" Vector__XXX 2 SG_ BMS_Alarm_CellGap : 24|2@1+ (1,0) [0|3] "" Vector__XXX 0 SG_ BMS_Warning_OverVoltage : 34|2@1+ (1,0) [0|3] "" Vector__XXX 2 SG_ BMS_Warning_UnderVoltage : 36|2@1+ (1,0) [0|3] "" Vector__XXX 2 SG_ BMS_Warning_OverTemp : 38|2@1+ (1,0) [0|3] "" Vector__XXX 0 SG_ BMS_Warning_UnderTemp : 40|2@1+ (1,0) [0|3] "" Vector__XXX 2 SG_ BMS_Warning_BmsComms : 54|2@1+ (1,0) [0|3] "" Vector__XXX 2 SG_ BMS_Warning_CellGap : 56|2@1+ (1,0) [0|3] "" Vector__XXX ??? 862 000035e - 42 6c 75 65 4e 6f 76 61 - Manufacturer = BlueNova 863 000035f - 00 00 00 05 ? 880 0000370 - 42 6c 75 65 4e 6f 76 61 - BmsName = BlueNova 888 0000378 - 3a 07 00 00 e7 06 00 00 ? 889 0000379 - 64 00 ? 882 0000372 - ff ff ff ff ff ff ff ff - BmsInfo 883 0000373 - eb 0c f6 0c 26 01 28 01 0ceb 3307 mV * 16 = 52.912 V Low Cell 0cf6 3318 mV * 16 = 53.088 V High Cell 0126 294 - 273 = 21 C Low temp 0128 296 - 273 = 23 C High temp 529 0000211 - ff ff ff ff ff ff ff ff ? 0000351 - 22 02 f4 01 e8 03 d6 01 0000355 - 5e 00 64 00 b8 24 0000356 - b5 14 c3 ff d5 00 --> 53.01 V -6.1 A 21.3 C 000035a - a8 aa 02 02 20 80 02 02 000035e - 42 6c 75 65 4e 6f 76 61 000035f - 00 00 00 05 0000370 - 42 6c 75 65 4e 6f 76 61 0000378 - 3a 07 00 00 e7 06 00 00 0000379 - 64 00 0000372 - ff ff ff ff ff ff ff ff 0000373 - e8 0c f6 0c 26 01 28 01 0000211 - ff ff ff ff ff ff ff ff Quote Link to comment Share on other sites More sharing options...
RikusW Posted September 27, 2022 Share Posted September 27, 2022 Seems like the Bluenova never reaches 100% SoC but stays at 99%, the inverter then continues charging at around 2A or more spiking up to 240W Quote Link to comment Share on other sites More sharing options...
RikusW Posted September 28, 2022 Share Posted September 28, 2022 I set the battery protocol to Goodwe and got the following from the CAN bus, this looks like Pylontech in the above document and is slightly different from the Victron 250kbps/500kbps protocol. (listed above from a previous protocol capture) Growatt to protocol L52 is for Pylontech so seems like Goodwe would be the right setting. 0000305 01 02 03 04 05 06 07 08 -- sent from inverter 0000351 22 02 f4 01 e8 03 d6 01 0000355 63 00 64 00 ac 26 0000356 2d 15 00 00 e0 00 0000359 00 00 00 00 -- not in Victron which gives 35a instead 000035c c0 -- not in Victron 000035e 42 6c 75 65 4e 6f 76 61 000035f 00 00 00 05 0000370 42 6c 75 65 4e 6f 76 61 0000211 ff ff ff ff ff ff ff ff Quote Link to comment Share on other sites More sharing options...
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