Troubleshooting Victron BlueNova Battery Compatibility

Key Takeaways

• The most common cause of compatibility issues is an improperly connected CANbus cable or outdated firmware.
• Always start by physically checking the CANbus cable connection and verifying the Victron GX device firmware version.
• Before handling any electrical connections, always isolate power to prevent electrical shock or damage.
• If issues persist after checking basic connections and firmware, or if complex configurations are needed, contact a qualified technician.

Why is my Victron system not recognizing my BlueNova battery?

If your Victron system is not recognizing your BlueNova Energy battery, the issue most often stems from an incorrect CANbus cable connection or outdated firmware on your Victron GX device. These batteries are designed to be compatible with Victron products in various systems, including Off Grid, Backup, and Energy Storage. The first step is to verify the physical connection and ensure all firmware is up to date.

Diagnosis

Follow these steps to diagnose why your Victron system might not be communicating with your BlueNova Energy battery.

1. Check CANbus Cable Connection:

• • Action: Ensure the CANbus cable is securely connected between the BlueNova Energy battery and the Victron GX device.
  • Detail: "Plug the GX device side of the cable into one of the VE.Can sockets on the back of the GX device or "BMS Can" . Plug the other end into the battery at one of the RJ45 CANbus ports."
  • Result: If the cable is loose or in the wrong port, secure it. An improper connection is a common cause for the battery not being visible on the GX device menu or display, and for the battery stopping charging or discharging after several minutes.

2. Verify GX Device Firmware Version:

• • Action: Check the firmware version of your Victron GX device.
  • Detail: "When used with BlueNova Energy Batteries the minimum firmware version for the GX device is v2.02."
  • Result: If your GX device firmware is older than v2.02, update it to the latest version. Outdated firmware can prevent proper communication and compatibility.

3. Confirm BlueNova Battery CAN-bus Speed:

• • Action: Verify the CAN-bus speed setting on your BlueNova Energy battery.
  • Detail: The "CAN-bus speed (BlueNova Energy batteries)" is "500kbps (default for new batteries)". For some batteries, "250kbps or 500kbps (selectable on user interface for new batteries, firmware update for older batteries)" may be an option.
  • Result: Ensure the battery's CAN-bus speed matches the expected setting. If it's incorrect, adjust it via the user interface or perform a firmware update if necessary.

4. Check RacPower CANbus Terminations (if applicable):

• • Action: If you are using BlueNova Energy RacPower batteries (BP & DU models), check their CANbus terminations.
  • Detail: "The RacPower( BP & DU )range of BlueNova Energy batteries need to have CANbus terminations done, supplied as per each RacPower unit".
  • Result: Ensure these terminations are correctly installed as supplied with the unit. Incorrect or missing terminations can disrupt CANbus communication.

5. Review GX Device CAN-profile Settings:

• • Action: Access the CAN-profile settings on your GX device.
  • Detail: "In case a setting does need changing, such as setting a different baud rate or configuring a VE.Can port to be used for BMS-Can instead, use the menu path //Settings -> Services -> CAN-profile//."
  • Result: Confirm that the settings, particularly the baud rate and VE.Can port configuration, are appropriate for BMS-Can communication with your BlueNova battery.

6. Consider CCGX Limitations:

• • Action: If you are using a CCGX and attempting to connect both VE.Can products (e.g., VE.Can MPPTs) and a BlueNova Energy battery.
  • Detail: "it is not possible with the CCGX to connect both VE.Can products (i.e VE.Can MPPTs) and a Bluenova Energy battery together. If this is required, use a Cerbo GX which has two separate sets of ports."
  • Result: If this is your setup, the CCGX is the limiting factor. You will need to upgrade to a Cerbo GX to use both simultaneously.

7. Check for DVCC Activation and Firmware:

• • Action: Verify if Distributed Voltage and Current Control (DVCC) is active and if all relevant devices have the required firmware.
  • Detail: DVCC is "Automatically activated when BlueNova Energy battery is connected via CANbus to GX device with latest Victron Energy GX device firmware." Required firmware versions include "BlueNova Energy 123SmartBMS firmware for DVCC v5.13", "BlueNova Energy BMMC firmware for DVCC V3.5 +", "Multi/Quattro firmware for DVCC version 422", "MultiGrid firmware for DVCC version 424", "GX device firmware for DVCC v2.12", "VE.Direct MPPTs firmware for DVCC v1.29", "Lynx Ion + Shunt firmware for DVCC v2.04", "Lynx BMS firmware for DVCC v1.09", and "ESS Assistant version for DVCC version 164 or later (Released in November 2017)".
  • Result: Ensure all components meet their minimum firmware requirements for DVCC to function correctly. DVCC is crucial for optimal battery management with Victron systems.

Cause/Fix Table

Communication Faults and Settings

Compatibility between Victron and BlueNova Energy batteries relies heavily on correct communication protocols and settings. BlueNova Energy LiFePo4 batteries are designed for seamless integration, but specific configurations are necessary.

CAN-bus Protocol Basics: The primary communication method is CAN-bus. BlueNova Energy batteries typically use a "CAN-bus speed" of "500kbps (default for new batteries)". Some models may offer "250kbps or 500kbps (selectable on user interface for new batteries, firmware update for older batteries)". It is important that the Victron GX device is configured to match this speed. You can check and adjust this via the GX device's menu path: Settings -> Services -> CAN-profile.

Cable and Pinout Checks: The CANbus cable connects the GX device to the battery. Ensure the cable is plugged into a "VE.Can sockets on the back of the GX device or "BMS Can"" port and an "RJ45 CANbus ports" on the battery. For BlueNova Energy "SSS" range batteries, a VE.Can terminator is not needed for the other VE.Can socket on the GX device. However, "The RacPower( BP & DU )range of BlueNova Energy batteries need to have CANbus terminations done, supplied as per each RacPower unit". If you are using "BlueNova Energy RacPower batteries(latest "DU" and "BP" models) with CANbus and RS485", it is recommended to "contact BlueNova Energy Technical Support for correct interlink comms cable configurations, especially where a BlueNova Energy BMAC Online units is present."

Protocol-Select Settings: When setting up your system, the "ESS Assistant battery type selection" should be set to the "Fifth battery type" in the Victron ESS Assistant. This ensures the Victron system correctly identifies and manages the BlueNova battery.

Firmware Notes: Ensuring all components have the correct firmware is critical for compatibility and the activation of features like DVCC.

• The "GX device minimum firmware version" is "v2.02".
• For DVCC functionality, specific firmware versions are required across your Victron and BlueNova components:
• • "BlueNova Energy 123SmartBMS firmware for DVCC v5.13"
  • "BlueNova Energy BMMC firmware for DVCC V3.5 +"
  • "Multi/Quattro firmware for DVCC version 422"
  • "MultiGrid firmware for DVCC version 424"
  • "GX device firmware for DVCC v2.12"
  • "VE.Direct MPPTs firmware for DVCC v1.29"
  • "Lynx Ion + Shunt firmware for DVCC v2.04"
  • "Lynx BMS firmware for DVCC v1.09"
  • "ESS Assistant version for DVCC version 164 or later (Released in November 2017)"

Distributed Voltage and Current Control (DVCC): DVCC is a key feature for managing lithium batteries with Victron systems. It is "Automatically activated when BlueNova Energy battery is connected via CANbus to GX device with latest Victron Energy GX device firmware." DVCC enables the battery's BMS to control charge and discharge limits. "Shared Voltage Sense (SVS)" is "Enabled by default when DVCC is enabled" but "can be disabled in Settings → System Setup menu." While a "Limit charge current" setting is user-configurable, it "can be disabled for BlueNova Energy batteries in most cases" when DVCC is active. You can enable or disable DVCC via Settings → System Setup.

Monitoring Multiple Batteries: For installations with multiple paralleled BlueNova Energy batteries, you may need additional hardware to monitor each battery individually. "To be able to monitor all individual paralleled BlueNova Energy batteries in an installation, a BlueNova Energy BMAC Online unit can be installed between the BlueNova Energy batteries and the Victron Energy GX device." This unit "can be purchased seperately from your BlueNova Energy registered installer or dealer."

Safety: Electrical Connections

Working with solar energy systems and batteries involves high voltages and currents, which can be dangerous if not handled correctly. Always prioritize safety.

• Isolate Power: Before connecting or disconnecting any cables, ensure all power sources are isolated. This includes turning off PV (solar panel) breakers, battery breakers, and AC breakers.
• Insulated Tools: Use only insulated tools when working on electrical connections to prevent accidental short circuits.
• Avoid Short Circuits: A spanner or other metal object accidentally bridging terminals on a battery bank can cause a massive short circuit, leading to severe burns, equipment damage, or fire.
• Authorized Service: Opening battery enclosures or Victron inverter/charger units should only be performed by authorized service personnel. These units contain capacitors that can store dangerous charges even after power is disconnected.

When to call a technician instead

While many compatibility issues can be resolved with basic troubleshooting, there are situations where professional assistance is necessary. You should call a qualified solar technician or your BlueNova Energy / Victron installer if:

• You are unsure about any step in the troubleshooting process, especially those involving electrical connections or firmware updates.
• The battery remains unrecognized or exhibits abnormal behavior after following all diagnostic steps.
• You suspect an internal fault with the battery or Victron equipment.
• You need to configure complex setups, such as those involving "RacPower interlink comms cable configurations" with a "BlueNova Energy BMAC Online units", which requires contacting "BlueNova Energy Technical Support".
• You are dealing with a Victron CCGX and need to integrate both VE.Can products and a BlueNova battery, as this requires a hardware upgrade to a Cerbo GX.
• Any safety concerns arise during the troubleshooting process.

Attempting repairs or configurations beyond your expertise can void warranties or lead to dangerous situations.