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The GX Touch screen is an optional accessory for the Cerbo GX. While it adds extended functionality and ease of use, the Cerbo GX can operate without it.

You can control and monitor your system remotely via the VRM portal or directly using a web browser or the VictronConnect app.

The choice to use the GX Touch screen depends on your preference for on-site interaction with your system​​.

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When you set the input current limit in the Cerbo GX, it applies to all inputs where the ‘Overruled by remote’ setting in VEConfigure is enabled.

This means that your setting will determine the current limit for these inputs. Navigate to Device List > [your inverter/charger] to access the input current-limiter settings.

Ensure ‘Overruled by remote’ is enabled in VEConfigure for the changes to take effect.

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This is a known issue. A few things to check include your internet connection stability and the firmware version of your Cerbo GX.

If the problem persists, it may also be due to a temporary issue with the VRM server, which i have seen happen from time to time.

Sometimes, resetting your Cerbo GX or waiting for a while before trying again can resolve the issue.

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You cannot access the Remote Console via Bluetooth. The Bluetooth functionality of the Cerbo GX is only designed for setting and changing up Wi-Fi and Ethernet configurations and settings through VictronConnect. It does not allow access to the Remote Console. To access the Remote Console, you HAVE TO use the built-in Wi-Fi Access Point or a local LAN network.

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The VRM Portal uses industry-standard security measures to protect your data and access to your devices.

When you connect your GX device to the VRM Portal, it’s important to use secure internet connections and follow recommended security practices for setting up your account and devices.

Regularly updating your device firmware via the VRM Portal also contributes to maintaining security.

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The VRM Portal plays a crucial role in monitoring and managing Energy Storage Systems.

It allows users to track the performance of their storage systems, including energy consumption, storage levels, and overall system efficiency.

This integration is particularly helpful for optimizing energy use and understanding the dynamics of your storage system.

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Isolation is crucial when installing the Cerbo GX, especially since it connects to many different products.

To prevent ground loops, ensure that proper care is taken with isolation.

VE.Bus and VE.Direct ports are isolated, while VE.Can and USB ports are not.

Generally, in most installations, this won’t be a problem. However, caution is advised, especially when using separately-powered USB hubs or other non-isolated connections​​.

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Yes, the Cerbo GX can monitor AC loads.

You can assign any energy meter the AC meter role via the Cerbo GX settings. This will display the load in the Device List and on the VRM in advanced widgets.

However, note that these metered loads are not used in calculations but only for monitoring purposes.

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The Cerbo GX is designed to be the heart of your energy installation, seamlessly integrating with other Victron components such as inverter/chargers, solar chargers, and batteries.

It uses extensive communication ports to connect these components, ensuring they work in harmony.

The Cerbo GX’s role is to monitor, control, and manage the entire system efficiently, providing a cohesive and unified management experience for your Victron energy system​​.

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Power loss in long DC (Direct Current) cables is primarily caused by two factors:

• Resistance and Voltage drop.

When electric current flows through a conductor, such as a cable, it encounters resistance, which can lead to energy being lost in the form of heat.

This is known as Joule heating or resistive heating.

The amount of power loss due to resistance is determined by the formula

P = I^2 × R

where:

• P is the power loss.

• I is the current.

• R is the resistance of the cable.

The resistance of a cable depends on its material, length, and cross-sectional area.

Typically, cables made of materials with lower resistivity, like copper or aluminum, have less resistance. The longer the cable, the greater the resistance, and the larger the cross-sectional area of the cable, the lower the resistance.

Voltage drop is another factor in power loss.

Over long distances, the voltage at the end of the cable can be significantly lower than at the beginning. This drop is also influenced by the cable’s resistance and the current flowing through it.

The voltage drop can be calculated using Ohm’s Law:

V = I × R

To minimize power loss in long DC cables, one can use cables with:

• larger diameters (to reduce resistance),

• use materials with lower resistivity,

• and (if feasible), increase the voltage to allow for a lower current for the same power transmission. However, increasing the voltage may not always be practical or safe, especially in DC systems.

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Connecting a USB GPS to your Cerbo GX is pretty straightforward.

Most third-party GPS modules that use the NMEA0183 command set will work.

Just plug your GPS into one of the USB sockets on the Cerbo GX.

It might take a few minutes to connect, but once it does, you’ll be able to track your vehicle or boat remotely on the VRM portal, even set up alarms with a Geofence!

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You’ll need resistive tank senders, as the Cerbo GX doesn’t support mA or 0-5V sensors without extra gear.

After hooking them up, go to the I/O menu on your GX device to enable them.

You can set up all sorts of things, like tank volume, capacity, and even custom shapes for tanks that aren’t linear.

Plus, the Cerbo GX is versatile enough to work with both European and US standard tank sensors.

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Not sure which PV inverter you have but here is a short guide on setting Up Fronius PV Inverters with Victron Cerbo GX:

1. Preparation:

• Check Compatibility: Ensure your Fronius inverter model (e.g., Primo, Symo, Eco) is compatible with the Victron GX device.

• Update Firmware: Update both Fronius and Victron devices to the latest firmware.

2. Configuration of Fronius Inverter:

• Micro-Grid Setup: Set the Fronius inverter to ‘Setup MG’ mode for Micro-Grid systems. This aligns with Victron’s frequency shift settings.

• Inverter Specifics: For European AC grids, use compatible ROW inverters like Fronius Primo or Symo. For US-type AC grids, ensure you have the appropriate UL inverters.

3. Configuring Victron Cerbo GX:

• Assistant Selection: Load the Multi or Quattro with the PV Inverter support Assistant for off-grid systems or the ESS Assistant for on-grid/energy storage systems.

• VE.Configure Software: Use this software to configure the system with the latest version. Add the necessary Assistants to regulate output frequency.

• Setting Frequencies: Adjust settings for different frequencies (50Hz and 60Hz) based on your system’s requirements.

4. LAN Configuration for Communication:

• IP Configuration: Set a valid LAN IP address on the Fronius using DHCP, Link-local, or manual addressing methods. Ensure the GX device and Fronius are on the same subnet.

• Connecting Devices: Connect both devices to the same LAN via Wi-Fi or Ethernet. Confirm IP settings are correctly configured.

5. Adding Fronius to GX Device:

• Scan for Inverters: Use the ‘Scan’ function in the GX Device menu to detect the Fronius inverter.

• Configure Inverter Details: Set the position relative to the Multi or Quattro and phase for each inverter. Configure automatic scanning settings based on your network setup.

6. Monitoring and Control:

• GX Device Monitoring: Once configured, the Fronius inverter’s details, such as current state and power generated, will be visible on the GX device.

• VRM Portal: Use the VRM Portal for detailed yield monitoring. Ensure to enable the PV Inverter yield widget(s) in the settings.

7. Zero Feed-in Configuration:

• Venus Control: The Venus device controls the Fronius output power for Zero feed-in systems. Configure this through the ESS manual.

8. Troubleshooting and FAQs:

• Flickering Issues: If experiencing flickering, Fronius has special firmware to address this. Contact Fronius Tech Support for assistance.

• Microgrid Setup: For specific setups like those with Neutral conductor, refer to the detailed Fronius manuals and support.

By following these detailed steps, you should be able to set up and configure your Fronius PV Inverter with a Victron Cerbo GX system effectively, ensuring optimal performance and monitoring capabilities. Always refer to the latest manuals and technical support for the most accurate and specific guidance tailored to your system.

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When connecting an NMEA 2000 GPS to the Cerbo GX, it’s crucial to ensure that the GPS unit adheres to the NMEA 2000 network protocol specifics, which is a standard for data communication between marine electronic devices. The NMEA 2000 device you’re using should be classified under device class 60, which refers to Navigation devices, and should specifically function as 145, which is designated for Ownship Position (GNSS) data.

Understanding NMEA 2000 Standards and Requirements

The data transmitted by your NMEA 2000 GPS must include position data (latitude and longitude), which is usually transmitted in PGN 129025. If your unit provides height information, it should be transmitted in PGN 129029. Additionally, if it tracks course and speed, those should be transmitted in PGN 129026. These PGNs (Parameter Group Numbers) are standard codes used to identify the type of data being transmitted in an NMEA 2000 network.

Compatibility of the NMEA 2000 GPS with the Cerbo GX has been specifically tested with certain models like the Garmin GPS 19X NMEA 2000. However, most NMEA 2000 compliant GPS-es should theoretically work.

Physical Connection Options: Cables and Adapters

To physically connect the NMEA 2000 GPS to your Cerbo GX, you have a couple of options. The VE.Can to NMEA 2000 cable is one such solution, which allows you to connect your NMEA 2000 network directly to the VE.Can port on the GX device. This cable comes with a fuse that, depending on whether it’s inserted or not, allows you to power the NMEA 2000 network with Victron equipment or not. Another option is the 3802 VE.Can Adapter by OSUKL, which is particularly useful for integrating a single NMEA 2000 device into a VE.Can network. This adapter is also capable of powering a lower voltage NMEA 2000 network directly from a 48V Victron system.

Voltage Considerations for 24V and 48V Systems

However, a critical consideration when connecting to 24V and 48V systems is that while all Victron components can accept up to 70V input on their CAN-bus connections, some NMEA 2000 equipment might not tolerate such high voltages. They usually require a 12V powered connection and might only work up to 30 or 36V. Therefore, it’s crucial to check the datasheet of your NMEA 2000 equipment. If your system contains NMEA 2000 components that require a network voltage below your battery voltage, consider using the 3802 VE.Can Adapter or install the VE.Can to NMEA 2000 cable without its fuse and provide the appropriate power to the NMEA 2000 network using a suitable adapter.

Remote Monitoring and Advanced Features via VRM Portal

Once your GPS is connected and configured, it will start transmitting data to the Cerbo GX, which you can monitor remotely via the VRM portal. This setup not only allows you to track your vehicle or boat’s position but also enables you to set up advanced features like geofencing, which sends an alarm when the system leaves a designated area.

Summary of Connecting NMEA 2000 GPS to Cerbo GX

In summary, connecting an NMEA 2000 GPS to Cerbo GX involves understanding and matching the technical requirements of the NMEA 2000 network and the GPS device, physically connecting the two using the appropriate adapter or cable, and ensuring the system’s voltage compatibility. Once set up, it offers robust tracking and monitoring capabilities through the VRM portal.

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The MultiPlus-II has a built-in transfer switch that automatically detects grid outages.

Upon detecting a power outage, it instantly switches to battery power, which is provided through its inverter function.

This switch happens within milliseconds, ensuring no interruption in power supply. Simultaneously, if your solar panels are generating power (during daylight), the MultiPlus-II directs this energy to power your home appliances and/or to charge the batteries.

The system uses an advanced battery management protocol to decide whether to store or use the solar power based on real-time demand and battery charge level.

This way, it ensures optimal use of solar energy and battery storage, maintaining a balance between energy input, storage, and consumption.