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--- battery_compatibility:byd_b-box-steps [2018-08-22 14:54] – [BMS to CCGX (or Venus GX) cabling (updated)] guystewart
+++ battery_compatibility:byd_b-box-steps [2021-04-08 16:01] (current) – [Use VE Configure to set charge parameters] boekel
@@ Line 5: / Line 5: @@
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-//Disclaimer:
-Some of the information presented in this guide is now out-of-date and depreciated. It will be updated in due course. For now it has been left here 'as is' for reference purposes. However it is not intended to represent the current best practice for part selection or procedure. Please refer to the [[battery_compatibility:byd_b-box|]] page for the latest compatibility information and installation advice.
+===== Disclaimer: =====
+**Some of the information presented in this guide is now out-of-date and depreciated. For now it has been left here for historical and reference purposes. However it is not intended to represent the current best practice for part selection or procedure. Please refer to the [[battery_compatibility:byd_b-box|]] page for the latest compatibility information and installation advice.**
-No warranty of the accuracy or completeness of the information in this document is given. Any qualified or otherwise party who chooses to use this document and the information contained does so at their own discretion and risk. The authors of this document are in no way liable for the use or misuse of this information.//
+This guide is not intended to replace reading (and comprehending) the manufactures own manuals. It is intended to supplement and provide additional information specific to a Victron and BYD system.
+**No warranty of the accuracy or completeness of the information in this document is given. Any qualified or otherwise party who chooses to use this document and the information contained does so at their own discretion and risk. The authors of this document are in no way liable for the use or misuse of this information.**
@@ Line 58: / Line 60: @@
 Connect the output side of the BYD main breaker (internal to the cabinet) to the main system disconnection device  (DC breaker or fuse assembly, external to the cabinet). Arguably in Australia if you only have one cabinet, the inbuilt 125A DC cabinet fuse is sufficient. However it is not clear where it is at a glance, and in case of an emergency, fast shutdown should be VERY OBVIOUS.
-===== BMS and internal coms cabling (updated)=====
+===== BMU, BMS and internal coms cabling (updated)=====
-The Battery Management System(BMS) is in the bottom section of the cabinet.
+There are several elements to the BYD system. There is a single central Battery Management Unit (BMU), this is able to communicate to up to 32 individual 2.5kWh battery modules. Each of the battery modules also has their own Battery Management System (BMS) to individually protect the cells, and report back to the BMU, which collects data from all of them and reports it to the [[venus-os:start|GX device]].
+The BYD Battery Management Unit (BMU) is in the bottom section of the cabinet, it is incorrectly labelled BMS in this picture.
 {{ :battery_compatibility:byd:byd-installguide6.jpg?direct&400 |}}
@@ Line 70: / Line 75: @@
 In the current version of Venus (2.15) the second CANbus on the Venus GX is now operational and configurable from the GUI. We now have both VECAN mppt and BYD connected and logging data through the Venus GX.
-There is another RJ45 connector on the BMS that is not labeled. It has a cable plugged into it that goes to the top of the cabinet. If I had been installing 1 or 2 batteries the cable could have stayed plugged in. To install 3 or 4 batteries, take it out. [[http://alpspower.com.au/wp-content/uploads/2018/06/BYD-Battery-Box-Res-2.5-10.0-INSTALLATION-SHORT-INSTRUCTION.pdf|This port is the main “COMout” that should connect to the last battery Management System (BMS) on the last battery.]]
+There is another RJ45 connector on the bottom of the BMU that is not labeled. It has a cable plugged into it that goes to the top of the cabinet. If I had been installing 1 or 2 batteries the cable could have stayed plugged in. To install 3 or 4 batteries, take it out. [[http://alpspower.com.au/wp-content/uploads/2018/06/BYD-Battery-Box-Res-2.5-10.0-INSTALLATION-SHORT-INSTRUCTION.pdf|This port is the main “COMout” that should connect to the last battery Management System (BMS) on the last battery.]]
 {{ :battery_compatibility:byd:byd-installguide7.jpg?direct&550 |}}
-The little ethernet jumper cables intended for connecting the BMSs together are labeled with COMin and COMout ends. Because one comes in every battery box, there was one left over. Put the COMout end of the first ethernet jumper cable into the bottom unlabeled port of the BMU and the other end into the left RJ45 port of battery #4. Then put the COMout end of the second jumper into the right RJ45 port of Battery #4 and put the COMin end into the RIGHT port of the battery #3.
+The little ethernet jumper cables intended for connecting the BMSs together are labeled with COMin and COMout ends. Because one comes in every battery box, there was one left over.
-Then put the unlabelled ethernet cable that was originally plugged into the BMS into the left RJ45 port on battery #2.
+**This guide originally advised to connect battery number 1 first. Current advice is now to connect the last battery first. Both configurations are out there working properly, and it may not make a difference, but it seems a good idea to follow the current advice.**
+Put the COMout end of the first ethernet jumper cable into the bottom unlabeled port of the BMU and the other end into the left RJ45 port of battery #4. Then put the COMout end of the second jumper into the right RJ45 port of Battery #4 and put the COMin end into the RIGHT port of the battery #3.
+Then put the unlabelled ethernet cable that was originally plugged into the BMS into the left RJ45 port on battery #3.
 {{ :battery_compatibility:byd:byd-installguide8.jpg?direct&550 |}}
 The top end of the cable went into the left port of battery#2. Finally the COMout of the third jumper went into the right port of battery #2 and the COMin went into the right port of battery #1.
 ===== BMS to CCGX (or Venus GX) cabling (updated) =====
-A custom ethernet cable is required to to connect the BYD BMU to a Victron Venus-device (CCGX or VGX).
+A custom ethernet cable is required to to connect the BYD BMU to a Victron [[venus-os:start|GX device]] (CCGX or VGX).
-Use the //VE.Can to CAN-bus BMS type A Cable//, part number ASS030710018. Plug the side which is labeled Battery BMS into the BYD BMS. Plug the side labeled Victron VE.Can into the Venus-device.
+Use the //VE.Can to CAN-bus BMS type A Cable//, part number ASS030710018. Plug the side which is labeled Battery BMS into the BYD BMU. Plug the side labeled Victron VE.Can into the [[venus-os:start|GX device]].
 Then, plug a [[https://www.victronenergy.com/accessories/ve-can-rj45-terminator|VE.Can terminator]] in the other VE.Can socket on the CCGX. Two VE.Can terminators are included with the package of the CCGX as an accessory, only one is used. Keep the other one as a spare.
@@ Line 122: / Line 131: @@
 | 3         | 110000   | First two jumpers up, all the rest down |
 | 4         | 001000   | Third jumper up, all the rest down      |
+| 5         | 101000   | First jumper up, Third jumper up, all the rest down      |
+| 6         | 011000   | Second jumper up, Third jumper up, all the rest down     |
+| 7         | 111000   | First three jumpers up, all the rest down |
+| 8         | 000100   | Forth jumper up, all the rest down|
+| 9         | 100100   | First jumper up, Forth jumper up, all the rest down      |
+| 10        | 010100   | Second jumper up, Forth jumper up, all the rest down     |
+| 11        | 110100   | First and Second jumper up, Forth jumper up, all the rest down      |
+| 12        | 001100   | Third jumper up, Forth jumper up, all the rest down      |
+| 13        | 101100   | And so on...|
+| 14        | 011100   |
+| 15        | 111100   |
+| 16        | 000010   |
 {{ :battery_compatibility:byd:byd-installguide8.jpg?direct&550 |}}
@@ Line 127: / Line 149: @@
 {{ :battery_compatibility:byd:byd-installguide11.jpg?direct&550 |}}
 The bottom two batteries.
 ===== BMS to Multi/Quatro communications wiring =====
-We need to wire the allow to charge and  allow to discharge relays on the BMS to the Multi/Quatro.{{ :battery_compatibility:byd:byd-installguide12.jpg?direct&550 |}}
-{{ :battery_compatibility:byd:byd-installguide13.jpg?direct&350 |}}
-{{ :battery_compatibility:byd:byd-installguide14.jpg?direct&350 |}}
+The Multi/Quattro needs to be connected to the [[venus-os:start|GX device]] via the VEbus connection with an ethernet cable.
-{{ :battery_compatibility:byd:byd-installguide15.jpg?direct&550 |}}
+===== Inverter/Charger (Multiplus, Quatro etc) firmware and settings =====
-===== Inverter/Charger (Multiplus, Quatro etc) firmware and settings =====
 Updating firmware for Victron VE.BUS products is not recommended for end users. I don’t think there will be many end users doing all this anyway but do heed Victron’s warnings about this procedure. It’s complicated!{{ :battery_compatibility:byd:byd-installguide16.png?direct&300 |}}
-If you already have a power source, you can and should configure all the required settings first. We had a functioning lead acid bank to operate off while setting everything up. If you don’t then this whole procedure may vary a little. This is important to consider as the BYD battery may turn itself off without a correctly configured connection to the CCGX/Venus GX which sends the signal for it to “stay alive”. If the battery turned off midway through a firmware update the consequences could be serious. If the connection between the CCGX/Venus GX and the BYD is established first, the battery will continue to operate. If you plan to use the BYD to power the inverter/charger for the firmware update process, first ensure the battery is connecting to the CCGX/Venus GX and wait ten minutes to ensure its all operating correctly. Setting up the Two-Signal BMS Support Assistant (previously called Lynx Ion BMS Support) can be done second.
+If you already have a power source, you can and should configure all the required settings first. We had a functioning lead acid bank to operate off while setting everything up. If you don’t then this whole procedure may vary a little.
-My Inverter/Charger is a Multiplus 48v, 5000VA with a new (larger chip) which is a model 2624 that came with Firmware version 155 so the full number printed on the circuit board was 2624155. My latest firmware was 413.
+This is important to consider that if the BYD battery has not yet been detected by the [[venus-os:start|GX device]], it may turn itself off without the signal for it to “stay alive”. If the battery turned off midway through a firmware update the consequences could be serious. Ideally the connection between the CCGX/Venus GX and the BYD is established first, and the battery will continue to operate. If you plan to use the BYD to power the inverter/charger for the firmware update process, first ensure the battery is connecting to the CCGX/Venus GX and wait ten minutes to ensure its all operating correctly.
+If this is not possible, such as a firmware update is required on the CCGX. Then it is possible to temporarily run the battery without shutting down by disconnecting the RS485 cable that connects the battery module to the BMU. This is very temporary situation until you can connect the [[venus-os:start|GX device]] for normal operation.
 [[https://www.victronenergy.com/upload/documents/manual-VE.Bus-firmware-versions-explained-EN.pdf|See victron documentation for selecting the correct firmware.]]
 [[https://www.victronenergy.com/live/updating_firmware:updating_ve.bus_products|See victron documentation for updating firmware.]]
-Log into your [[https://professional.victronenergy.com/|Victron Professional]] account and download appropriate firmware that supports the Two-Signal BMS Support Assistant.
-You will need:
-  *USB to MK2 or MK3 cable
-  *The latest versions of USBMK2 Drivers, VE Configure Tools & VE Power Setup which are all available on the software section of [[https://www.victronenergy.com/support-and-downloads/software|Victron’s support & downloads page.]]
-  *A laptop running Windows (with a good battery and fully charged)
-Setup the Two-Signal BMS Support Assistant (credit:[[https://www.victronenergy.com/live/battery_compatibility:byd_b-box|Victron BYD integration page]]).
-Connect the laptop to the Inverter/Charger with the USB adapter, and open the VEConfigure app.
-You may need to disable the Virtual Switch to enable the “Assistants” functionality.
-Install the “Two-Signal BMS support Assistant”:
-{{ :battery_compatibility:byd:byd-installguide17.png?direct&400 |}}
-{{ :battery_compatibility:byd:byd-installguide18.png?direct&400 |}}
-{{ :battery_compatibility:byd:byd-installguide19.png?direct&400 |}}
-This assistant will be configured using VE Configure.
-This can be done directly if you are connected to the Multi/Quatro with the USB to MK2/mk3 cable. If you are connected through the CCGX/Venus GX you will need to pull the settings with VE Power Setup, open and edit them with VE Configure and then put them with VE Power Setup again.
-If you already have a firmware that supports the assistant you can just use the CCGX or Venus GX to get and put the settings on the Multi/Quatro. See Victron’s documentation on this procedure.
 ===== Use VE Configure to set charge parameters =====
@@ Line 175: / Line 172: @@
 | Battery Type       | Lithium  |
 | Charge Curve       | Fixed    |
-| Absorption Voltage | 55.2V    |
+| Absorption Voltage | 56.5V    |
 | Float Voltage      | 55V    |
 | Absorption Time    | 1 HR     |
@@ Line 190: / Line 187: @@
 {{ :battery_compatibility:byd:byd-installguide21.png?direct&550 |}}
-Important note(updated): As of 28/06/2017, users who have the Victron VE.CAN MPPT solar charges will NOT be able connect them to the CCGX CAN bus at the same time as the BYD BMS. Considering the BYD BMS must be connected, it is not possible to monitor and manage the MPPT via VE.CAN. <del>The Venus GX has a second CAN bus but IS NOT officially functional at this time. See [[https://drive.google.com/file/d/0B10SDM_oYx9oU0VNMmp2RDVKN2M/view?usp=sharing|this guide]] for activating the second CANbus on the Venus GX.</del>
+Important note: Users who have the Victron VE.CAN MPPT solar charges will NOT be able connect them to the CCGX CAN bus at the same time as the BYD BMS. Considering the BYD BMS must be connected, it is not possible to monitor and manage the MPPT via VE.CAN.
-**UPDATE(6/7/2017): As of Venus 2.08~7 the second CANbus on the Venus GX is now operational and configurable from the GUI. We now have both VECAN mppt and BYD connected and logging data through the Venus GX.**
+A second CANbus is available on the Venus GX is now operational and configurable from the GUI. We now have both VECAN mppt and BYD connected and logging data through the Venus GX.
 For those users that have Victron VE.Direct MPPT solar chargers, the charges should connect and operate as usual.
@@ Line 217: / Line 214: @@
 ===== Startup procedure =====
-The procedures in the BYD manual do not make sense. They call for operations to occur on the CCGX before there is power to it. And ask for the battery to be set to DOD 5%. I was not able to see these settings. Perhaps the manual is out of date.
-The following operations worked fully.
 Pre-startup check:
@@ Line 233: / Line 226: @@
   *Ensure all coms cables are seated and attached properly.
   *Take all reasonable and legal measures required.
-  *Ensure all settings in the Multi/Quatro, the solar charger and the CCGX/Venus GX are programed correctly (yes, this requires an operating battery other than the BYD).
+  *Ensure all settings in the Multi/Quatro, the solar charger and the CCGX/Venus GX are programed correctly.
 Startup procedure:
@@ Line 250: / Line 243: @@
   *Enable charging on the MPPT
-Finally, keep an eye on all the parameters while the battery is charging.
+===== Check Parameters =====
+On the [[venus-os:start|GX device]], open the menu and select the BYD battery.
+Scroll down to the **Parameters** menu option.
+Inside there is some data communicated by the BYD BMU to the [[venus-os:start|GX device]] via the CANBus.
+The Discharge Current Limit should be 35A per cell, eg 70A for 2 cells.
+The Max Charge Voltage should be 56.5V.
+Charge Current limit will vary depending on battery state of charge and temperature.
+If this isn't the case, time to go [[https://www.victronenergy.com/live/battery_compatibility:byd_b-box#troubleshooting|troubleshooting.]]
 Hopefully this info has been helpful.
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