Description
The new parallel function will allow up to 3 x AIO 6kW (5kW AUS) inverter/battery units to be connected to the same gateway. Providing up to 18kW (15kW AUS) of power and 40.5kWh of storage in one single virtual system. This is all managed by the Gateway itself, including setup & user operations. All In One parallel support all the same functions as a single unit, including whole home backup.

System Overview
The system is connected as follows:

The AC supplies of each AIO are connected into the Gateway via their own 6mm cable and individual RCBO. The Communications cable from the Gateway connected to AIO1 (Master). From AIO1 there is 2 x RJ45 cables to AIO2 and if a 3rd unit fitted, a further 2 from AIO2 to AIO3.

Electrical Connections
There are 2 methods of connecting the additional inverters to the gateway. You may use either method, one may be more suited than the other, depending on installation scenario and location.

1. Power the Installation down and isolate from the mains supply.

2. Connect tails of at least 16mm to the rear terminal block of the gateway.

3. Bring them out of the gateway to a separate mini consumer unit, located near the AIOs.

4. In this new remote CU, you can install the required circuit protection for the All In One inverter/battery units to be installed.

5. The integral RCD/MCB in the gateway is now no longer in use.

6. Circuit protection must be double pole, Type A and rated C32 and be Bi-Directional. (e.g. ABB DS201C32A30, or CUDIS RO2SN 32C/030A)

Option 2 – Integral into Gateway Housing (Alternative if AIOs are located with the GW)

1. Power the installation down and Isolate from the mains supply.

2. Remove the supplied RCD/MCB unit(s) and replace with 2 or 4 Bi-Directional RCBOs with a rating of C32 (e.g. being ABB DS201C32A30, 32A rated and 30mA TypeA)

3. Additional Busbar tails will be required and should be of at least 6mm size and 200mm in length. Terminated in M6 Eyelets on one end.

4. These tails should be secured to the Busbar spare ways using M6x14mm Flange Bolts, tightened to 2.5Nm.

Example here Shows 2 x DS201C32A30 correctly in the Gateway to support 2 x AIO units. Leaving the existing PV RCD/MCB in place.

Firmware Requirements
Load all All In One units with at least D612-A612 firmware. Ensure the AIO is rebooted, and firmware is validated correct before connecting up the communications cabling, to ensure the inverter are parallel enabled. Firmware will be loaded on commissioning, manually via USB locally, or via USB-A to USB-A cable locally. Locally is the preferred option.

Load the Gateway with at least v10 firmware, which support parallel and LoRa. Until the Gateway is at version 10 or higher, it will not communicate with the multiple inverters and may generate an error. Therefore ensure the gateway is at the correct release before proceeding.

Note. The AIO inverter firmware must match. If the AIOs have different versions, they will not operate correctly.

Connect a fully wired RJ45 cable from the Gateway to AIO1, this may already be present, if converting from a single installation.

Connect 2 x RJ45 cables between AIO1 and AIO2

1. AIO1 GW-Out to AIO2 GW-In (Gateway Comms)

2. AIO1 Parallel-Out to AIO2 Parallel-In (Sync Comms)

3. Repeat between AIO2 and AIO3 if a 3rd unit is required.

Setup & Configuration
All configuration is done at the Gateway for a parallel installation. Parallel Commissioning will setup the gateway in the Configure Inverter step. This will reboot both inverters simultaneously in the process. This step puts the AIOs in parallel mode and sets their grid parameters.

All devices are required to be on the same customer account, ie. 2 or 3 x AIO and 1 x Gateway. This will configure the portal and App to point any configuration at the gateway, instead of the AIOs themselves. All other settings and configuration is the same as a single AIO.

Additional settings available to a parallel installation