GoodWe

GoodWe Energy Storage Inverters

For the inverter compatibility list, see FlexiO compatible inverters & charging stations.

In this section you’ll find instructions on how to integrate FlexiO with Goodwe Energy Storage Inverters.

This guideline provides instructions for connecting the FlexiObox and configuring FlexiO.
For detailed hardware instructions, see the individual battery and inverter manuals of the manufacturer.

1. Modbus Support

Overview of the different connections:

1.1 Modbus for standard GoodWe inverters

To connect a standard GoodWe inverter, combine the 2 following items:

• S/FTP cable [LSF2]:

  • Connect one side to the GoodWe Black Dongle [LMGS] female RJ45

  • Connect the other side to the standard GoodWe inverter

• GoodWe Black Dongle [LMGS]: plug the USB connector into one of the 4 FlexiObox USB ports

The S/FTP cable [LSF2] is sold with a length of 2 meters. Unlike UTP, S/FTP is a shielded network cable (Cat6) which ensures high quality for this type of serial connections.

Alternatively any qualitative S/FTP (Cat6 or higher) cable can be used.

Related: Where to order these products.

1.2 Modbus for 3-phase GoodWe inverters

To connect a 3-phase GoodWe inverter, combine the 3 following items:

• S/FTP cable [LSF2]:

  • Remove the RJ45 connector on one side and strip the cable to uncover the 8 coloured (twisted pair) cables.

  • Connect following coloured cables to the proprietary connector:

    • Both Orange/White & Green/White cables to position 1

    • Both Orange & Green cables to position 2
      

      

Tip: use a heat shrink to cover the internal S/FTP cables.

• Plug the proprietary connector into the 3-phase GoodWe inverter

• Connect the other side to the GoodWe Black Dongle [LMGS] female RJ45

• Plug the GoodWe Black Dongle [LMGS] USB connector into one of the 4 FlexiObox USB ports

1.3 Modbus for Goodwe ES G2 inverter

To connect a GoodWe ES G2 inverter (also known as GoodWe ES20), combine the 2 following items:

• S/FTP cable [LSF2]:

  • Remove the RJ45 connector on one side and strip the cable to uncover the 8 coloured (twisted pair) cables.

  • Connect a new RJ45 on the stripped side of the cable, only connecting the following cables:

    • Orange/White cable to RJ45 pin 1

    • Orange cable to RJ45 pin 2

    • Blue cable to RJ45 pin 4

    • DO NOT connect any of the 5 other cables to the RJ45 connector as will interfere with the communication signal
      

      

• Plug this RJ45 in one of the dedicated EMS/PAR sockets on the 3-phase GoodWe inverter
  

  

• Connect the RJ45 on the other side to the GoodWe Black Dongle [LMGS] female RJ45

• Plug the GoodWe Black Dongle [LMGS] USB connector into one of the 4 FlexiObox USB ports

2. Goodwe Smart Meter installation

All GoodWe inverters have a build-in smartmeter to measure grid power.
This measurement is crucial for the inverter to function properly and being able to run the instalation in standalone modus (separate from FlexiO) which is a prerequisite before connecting and activating FlexiO.

In the event that a GM1000D Smartmeter is supplied with Retrofit inverters, there is a second current transformer (CT) that should be installed on the output (AC) of the PV inverter. See the figure below.

It is important to note the AC connection on the GM1000D where the L1 and L2 needs to be connected to Live.

If the GM1000D is installed with CT2 connected to the output of the PV inverter, InverterPVRetro should be selected in the Device Details under Retrofit PV Measurement.

3. Technical support

Visit the support page.