SolarEdge Synergy Manager and Secondary Unit Commissioning Guide

Key Takeaways

• SolarEdge 1-phase and 3-phase HDwave inverters support Alternative Power Source (APS) mode for AC-coupling.
• Firmware 4.8.24 (SetApp) or 3.25xx (LCD) or higher is required for APS functionality.
• Multi-inverter setups utilise a leader/follower configuration via RS485-1 for coordinated operation.
• Specific SetApp or LCD menu paths are used to configure APS, frequency shifting, Modbus TCP, and SunSpec settings.

SolarEdge Synergy Manager and Secondary Unit Commissioning Overview

The SolarEdge Synergy Manager concept, referring to multi-inverter installations, enables coordinated operation of SolarEdge inverters, particularly when integrating with alternative power sources like Victron Energy Inverter/chargers. This guide focuses on commissioning SolarEdge HDwave inverters for "Alternative Power Source mode" (APS), which facilitates continuous solar production during outages or in off-grid scenarios. This mode supports extended frequency and voltage operating ranges and frequency-power and voltage-power droops dedicated to off-grid operation. For multi-inverter setups, a leader/follower configuration is established via RS485-1, ensuring synchronised control and monitoring.

Compatible SolarEdge Inverter Models and Firmware

The Alternative Power Source (APS) feature is exclusively available for SolarEdge 1-phase and 3-phase HDwave inverters. Compatibility requires specific firmware versions to enable the necessary control functionalities.

It is important to note that US models currently lack Frequency Control, rendering them incompatible with APS mode.

Pre-Commissioning Checks and Multi-Inverter Layout

Before energising the system, several pre-commissioning checks are essential to ensure safe and correct operation, especially in a multi-inverter setup. The Synergy Manager concept implies a primary (leader) inverter coordinating with secondary (follower) units. This coordination is achieved through an RS485-1 interconnection.

For installations involving an alternative power source, a dry contact must be installed to sense grid availability. This involves connecting twisted pair wires from the dry contact terminals to the L1 and V terminals of the Communication Board inside the inverter. When performing this wiring, ensure the inverter is fully isolated from all power sources (PV, battery, AC grid) and that appropriate personal protective equipment (PPE) is worn. Only authorised personnel should perform internal wiring.

In a multi-inverter setup, only the Leader SolarEdge inverter requires the dry-relay contact connection. The leader inverter also handles the primary GPIO setting for Alternative Power Source configuration, which then applies to the follower inverters.

Configuring Alternative Power Source (APS) Mode via SetApp

The configuration of APS mode, frequency shifting, and communication protocols is critical for proper system integration. These settings are typically accessed via the SetApp for screenless inverters or directly through the LCD interface for models equipped with one.

Network Configuration and Monitoring Integration

For seamless monitoring and control, the SolarEdge inverter system and any external monitoring devices, such as a Victron GX device, must be on the same local area network (LAN) or WiFi network. It is advised to configure the SolarEdge inverter’s IP address to a static IP by disabling DHCP. This ensures consistent network communication and simplifies device discovery. Each inverter in a multi-inverter setup requires its own TCP connection and IP address, all with the same SunSpec setting for proper data acquisition.

Installation Safety and Switchgear Requirements

All electrical work must be performed by qualified and authorised technicians. Before commencing any installation or maintenance, ensure that all power sources to the inverter (PV array, battery, AC grid) are isolated by opening their respective breakers. Allow sufficient time for internal capacitors to discharge before opening the inverter enclosure or working on internal components.

When installing the dry contact for grid sensing, ensure the inverter is de-energised. Connecting twisted pair wires to the L1 and V terminals of the Communication Board requires careful handling to avoid damage or short circuits. Always use insulated tools and wear appropriate personal protective equipment (PPE), including safety glasses and insulated gloves. Any work inside the inverter enclosure is considered authorised-service work.

What the published sources do not tell you

The provided documentation offers clear steps for configuring SolarEdge inverters for Alternative Power Source (APS) mode. However, it does not detail specific hardware components or a dedicated product named "SolarEdge Synergy Manager" beyond the conceptual multi-inverter leader/follower setup. Pre-commissioning testing procedures without grid power are not explicitly outlined, nor are specific error codes or fault modes related to APS operation. Detailed visual walkthroughs of the SetApp interface are also not provided, only menu paths. The reasons behind the lack of Frequency Control in US models, and whether this is a temporary limitation, are not elaborated upon.