Differences

This shows you the differences between two versions of the page.

--- battery_compatibility:byd_b-box [2019-10-30 12:14] – [5. GX device Configuration] guy_stewart
+++ battery_compatibility:byd_b-box [2020-02-11 13:05] – [5. GX device Configuration] guy_stewart
@@ Line 33: / Line 33: @@
 It is essential to use the CAN-bus connection of a [[venus-os:start|GX device]] with the BYD batteries for the keep-alive signal, communication of charge and discharge limits, error codes and state of charge.
-When used with B-Box batteries, the minimum required firmware version for the [[venus-os:start|GX device]] is v2.15. It is highly recommended to use the latest firmware version on all connected devices, including CCGX/VGX, Inverter/Charger and MPPTs. There are regular updates to improve performance and reliability.
+When used with B-Box batteries, the minimum supported firmware version for the [[venus-os:start|GX device]] is v2.42. It is highly recommended to use the latest firmware version on all connected devices, including CCGX/VGX, Inverter/Charger and MPPTs. There are regular updates to improve performance and reliability.
 === 1.3 All 48V Multis, MultiPlusses, MultiGrids and Quattros are compatible ===
-The minimum firmware version is 422. Though updating to the latest firmware is recommended where possible.
+The minimum supported firmware version is 469. Updating to the latest firmware is recommended for new installations, and troubleshooting issues.
 These inverter/charger units must be connected to the [[venus-os:start|GX device]] via the VE.Bus connection port.
@@ Line 55: / Line 55: @@
 __MPPTs with a VE.Direct port__
-MPPTs are controlled via the [[venus-os:start|GX device]]. Make sure the [[venus-os:start|GX device]] runs v2.15 or later, and the MPPTs to 1.39 or the latest available version.
+MPPTs are controlled via the [[venus-os:start|GX device]]. Make sure the [[venus-os:start|GX device]] runs v2.42 or later, and the MPPTs to 1.47 or the latest available version.
 The MPPT requires connection to the [[venus-os:start|GX device]] to regulate charge currents as the batteries require (due to temperature, etc)
 To test operation, try disconnecting the [[venus-os:start|GX device]] from the MPPT. After a time-out, the MPPT will stop charging and flash an error code on its LEDs. The error code is [[https://www.victronenergy.com/live/mppt-error-codes#err_67_-_no_bms|error #67: no BMS]].
-__MPPTs with a VE.Can port__
+__MPPTs with a VE.Can port and VE.Direct port__
-Firmware should be at least version 2.05.
+Firmware should be at least version 1.04.
-When using VE.Can MPPT's, it is recommended to use the Venus GX (VGX), instead of the CCGX. The VGX has two CAN-bus interfaces available and allows communication between the MPPTs, BYD and the VGX.
+When using VE.Can MPPT's, it is recommended to use the a [[venus-os:start|GX device]] with a BMS-Can interface as well as the VE.Can interface (eg Cerbo GX, or Venus GX), instead of the CCGX. This allows communication between the MPPTs, BYD and the GX.
+Please note that older model VE.Can MPPTs (without VE.direct and with built in screen) are no longer supported with BYD managed batteries.
 === 1.5 Battery compatibility ===
@@ Line 255: / Line 255: @@
 {{ :battery_compatibility:byd-parameters.png?nolink&290 | }}
-This parameters page is also a good place to check that all batteries are connected and working properly. In normal working conditions, for the 2.5 model, the charge current limit is 35A per cell. For example, 140A charge current limit ( 140 / 35 = 4 ) means there are 4 BYD battery cells connected.
+This parameters page is also a good place to check that all batteries are connected and working properly. In normal working conditions, for the 2.5 model, the charge current limit is ~35-50 A per cell. For example, 140A charge current limit ( 140 / 35 = 4 ) means there are 4 BYD battery cells connected.
-Note the discharge current limit figure has been increased in 2019 firmware versions - so it may appear slightly higher (eg 50A per cell).
+Note these limits have been adjusted higher by BYD during firmware updates, so the charge and discharge current limit figure may appear slightly higher.
 === Color Control GX Configuration ===
@@ Line 262: / Line 263: @@
 The CCGX only has one available VE.Can port. It is not possible to connect both CAN products such as VE.Can MPPT (250 kbit/s) and an B-Box battery CAN-bus (500 kbit/s) together on the CCGX. As the BYD Battery MUST be connected, you will need to use the port for that. This will mean no data is collected from the VE.Can MPPT, nor can the CCGX control it. This means you are required to use the "Allow to Charge" wire configuration for the MPPT.
-=== Venus GX Configuration ===
+=== GX Device with multiple CAN-bus port configuration ===
+With GX devices that have two CAN-bus interfaces available (eg Cerbo GX and Venus GX), the VE.Can MPPT will remain connected to the VE.Can port, while the BYD CAN-bus cable should use the specific CAN-bus connections (H, L, GND), or BMS-Can ports.
-The VGX has two CAN-bus interfaces available. The VE.Can MPPT will remain connected to the VE.Can port, while the BYD CAN-bus cable should use the specific CAN-bus connections (H, L, GND).
+This allows data from the MPPT and BYD battery simultaneously.
-This allows data from the MPPT and BYD battery simultaneously. You will only need to connect the Allow-to-charge wires if using the VE.Can MPPT and VGX.
 The CAN-bus connections are galvanically isolated at the BYD BMU. There is no issues using the non-isolated connection of the VGX.