Victron CANvu GX IO Extender Wiring and Setup Guide

Key Takeaways

• The CANvu GX IO Extender requires a separate wiring kit for installation.
• Power supply must be between 8 and 32 VDC; 48V systems need a 48VDC to 24VDC downconverter.
• Ensure all connections are secure and correctly identified before powering on the unit.
• The VE.CAN bus connections on the unit are not isolated.

How do I wire and set up my Victron CANvu GX IO Extender?

Setting up your Victron CANvu GX IO Extender involves connecting the power supply and various communication and I/O ports. The CANvu GX IO Extender and its wiring kit must be purchased separately and are always needed for installation.

Diagnosis and Setup Steps

Follow these steps to correctly wire and set up your CANvu GX IO Extender.

1. Verify Wiring Kit: Confirm you have the necessary wiring kit. The CANvu GX IO Extender and wiring kit need to be purchased separately.
2. Power Supply Connection: Connect the power cable to the unit. The power cable requires a supply voltage between 8 and 32 VDC. If you are operating a 48V system, you must use a suitable power supply or a 48VDC to 24VDC downconverter.
3. VE.Direct Connections: The CANvu GX IO Extender features 3 VE.Direct connection ports. Connect your compatible Victron devices (e.g., MPPT solar chargers, inverters) to these ports using appropriate VE.Direct cables.
4. Ethernet Connection: Connect an Ethernet cable to the 1 Ethernet Port for network communication. This allows for remote monitoring and firmware updates via a network connection.
5. CAN bus Connection: Connect your VE.CAN bus devices to the CAN bus connections. Note that the VE.CAN bus connections are not isolated. Ensure proper grounding and termination as per CAN bus best practices.
6. Analogue Input Connection: The unit includes 1 Analogue input. Connect any analogue sensors (e.g., temperature, tank level) that provide a compatible analogue signal.
7. Digital Input Connection: Use the 1 Digital input for connecting devices that provide a digital signal, such as a switch or a dry contact.
8. Relay Output Connection: The CANvu GX IO Extender has 1 Relay output. This can be used to control external devices or trigger alarms based on system conditions.

Connection Details

This table provides an overview of the connections available on the Victron CANvu GX IO Extender and their primary uses.

Safety: Electrical Connections

Always prioritize safety when working with electrical systems. Before making any connections to the CANvu GX IO Extender:

• Isolate Power: Ensure all power sources (battery, solar, AC) are disconnected.
• Insulated Tools: Use insulated tools to prevent accidental short circuits.
• Correct Voltage: Verify that your power supply voltage matches the required 8 - 32 VDC range. Using an incorrect voltage can damage the unit.
• 48V Systems: If you have a 48V system, the use of a 48VDC to 24VDC downconverter is mandatory to protect the device.
• IP67 Rating: The CANvu GX IO Extender has an IP67 enclosure rating for all-round protection. Ensure all cable glands and covers are properly secured after wiring to maintain this rating, especially in dusty or wet environments.

When to call a technician instead

While basic wiring can be performed by a competent individual, certain situations warrant professional assistance. If you are unsure about the correct wiring for your specific system, especially with complex CAN bus integrations or 48V system downconverters, it is best to consult a qualified Victron Energy installer or technician. Incorrect wiring can damage the unit, other system components, and may void your warranty. For advanced configuration or troubleshooting issues that are not resolved by basic wiring checks, professional support can ensure your system operates safely and efficiently.