Victron GX and SolarEdge APS Mode Integration Guide

Key Takeaways

• SolarEdge APS mode enables HDwave inverters to operate with non-grid sources like Victron inverter/chargers.
• Specific firmware versions (4.8.24+ for SetApp, 3.25xx+ for LCD) are mandatory for SolarEdge inverters.
• Frequency shifting settings (P(f) P0 at 50.2Hz, P(f) P1 at 51.2Hz) are crucial for power reduction during off-grid operation.
• Modbus TCP SunSpec configuration (port 502, the correct Device ID) allows Victron GX devices to monitor SolarEdge inverters.

What is SolarEdge APS Mode and why use it with Victron GX?

SolarEdge's "Alternative Power Source mode" (APS) allows their inverters to AC-couple with non-grid power sources, such as the Victron Energy Inverter/chargers range. This feature facilitates continuous solar production during grid outages or in off-grid scenarios. APS mode supports an extended frequency and voltage operating range, along with frequency-power and voltage-power “off-grid” dedicated droops, enabling simultaneous operation with non-grid energy sources. This integration is particularly useful for maximizing self-consumption and ensuring energy independence.

Configuring SolarEdge Inverters for APS Mode

To enable APS mode, specific firmware versions and settings must be applied to your SolarEdge inverter. This feature is available for 3-phase and 1-phase HDwave inverters.

1. Firmware Requirements

Ensure your SolarEdge inverter meets the minimum firmware version:

• SetApp inverters: Firmware version 4.8.24 or higher.
• LCD inverters: Firmware version 3.25xx or higher.

2. APS Mode Activation

The method for activating APS mode depends on your inverter type:

For SetApp inverters:

• Navigate to Commissioning -> Communication -> GPIO.
• Set the Power Reduction Interface (RRCR) Mode to Alternative Power Source.

For LCD inverters:

• Navigate to Communication -> GPIO Conf.
• Set the Device Type to Alternative Power Src.

3. Frequency Shifting Configuration

Frequency shifting is essential for the Victron system to control the SolarEdge inverter's output. These settings define how the SolarEdge inverter reacts to frequency changes from the Victron system.

For SetApp inverters:

• Go to Power Control -> Alternative Power Source -> P(f).
• Set P(f) P0 to 50.2Hz, 100% Power.
• Set P(f) P1 to 51.2Hz, 0% Power.

For LCD inverters:

• Go to Power Control -> Alt Power Src -> P(f).
• Set P(f) P0 to 50.2Hz, 100% Power.
• Set P(f) P1 to 51.2Hz, 0% Power.

4. Additional Requirements

• Dry-contact for grid sensing: A dry-contact is required for sensing grid supply. Victron’s auxiliary Dry-Out can also be used.
• SolarEdge grid meter: A SolarEdge grid meter is required for Zero feedback functionality.

Configuring Victron ESS Assistance for Frequency Shifting

The Victron Energy System (ESS) needs to be configured to work in conjunction with the SolarEdge frequency shifting. These settings are typically found within the VE.Bus Config parameters on your Victron GX device.

These settings ensure that the Victron system initiates power reduction in the SolarEdge inverter as the frequency rises, preventing overproduction in off-grid scenarios.

Enabling Modbus TCP SunSpec for Monitoring

To allow your Victron GX device to monitor the SolarEdge inverter, you must configure Modbus TCP SunSpec communication.

1. SolarEdge Inverter Modbus TCP SunSpec Setup

For SetApp inverters:

• Navigate to Communication -> Modbus TCP port.
• Set Modbus TCP port to 502.
• Go to Communication -> RS481.
• Set Protocol to SunSpec (Non-SE Logger).

For LCD inverters:

• Navigate to Communication -> LAN Conf -> Modbus TCP.
• Set TCP Port to 502.
• Go to Communication -> RS481.
• Set Device Type to Non-SE Logger.

2. Static IP Address Recommendation

It is advised to set the SolarEdge inverter's IP address to a static IP by disabling DHCP. This ensures consistent communication with the Victron GX device.

Integrating Multiple SolarEdge Inverters

If you have multiple SolarEdge inverters, they can be integrated into the system.

• Interconnection: Use RS485-1, Leader/follower configuration.
• Grid Control: Ensure Grid Control is Enable under Power control -> Grid Control.

Safety: Electrical System Considerations

Working with solar inverters and battery systems involves high voltages and currents. Always isolate PV, battery, and AC breakers before performing any wiring or configuration changes. Use insulated tools and follow all manufacturer safety guidelines. A spanner across a battery bank can short hundreds of amps, causing severe burns or equipment damage. If you are unsure about any step, consult a qualified electrician.

When to call a technician instead

While this guide provides detailed steps, complex electrical systems can be dangerous if not handled correctly. If you encounter issues beyond basic configuration, or if you are uncomfortable working with high-voltage equipment, it is best to consult a certified solar technician or Victron Energy installer. Incorrect wiring or settings can damage equipment, void warranties, or pose significant safety risks.