KNX gateway for Growatt Inverters

The KNX gateway for Growatt inverters provides a simple solution to transfer all relevant data from the inverters to KNX. It allows integrators to take advantage of a fully integrated solar panel inverter, the data can be used to optimize energy consumption, monitoring, trending or to trigger specific action in the KNX installation. 

KNX Gateway for solar inverters
  • KNX Interface for Growatt inverter serie
  • Monitoring of Energy, Power, current, voltage, frequency, temperature,…
  • Connected to the inverter over Ethernet
  • Galvanic insulation from the KNX bus
  • Configurable refresh rate of inverter data
  • DIN rail mounted
  • Auxiliary power supply 12-30VDC
  • Advanced Logic functions including weekly calendar, sequences, math, logic gates and triggers.

DESCRIPTION

The KNX interface module INV-KNX is a KNX gateway for the Growatt inverters. It provides KNX group objects for all relevant values from the inverter. See below for the complete list of objects. 

This gateway is intended to be used with a Growatt inverter compatible with the SunSpec modbus interface definition. The inverter is connected to the ethernet network on the same router as the KNX gateway.

CONNECTION

Elausys INV-KNX module is supplied from an external 12-30VDC power supply.  An Ethernet RJ45 connector and a KNX connector provide access to the KNX bus and to the ethernet network. No additional component or wiring is required.

INV-KNX gateway connection

SOFTWARE

The KNX application software includes the following group objects. All group object are refreshed at a cyclic rate defined by an ETS parameters.

When the inverter is equipped with an external powermeter, this information are also available on the KNX gateway.

Depending on the inverter model, not all of these objects may be available. See user manual for more details. In case your inverter model is not yet supported, please contact us to see the compatibility or possibility to include it.

GO

NAME

DESCRIPTION

4

AC Current A

AC Current phase A

5

AC Current B

AC Current phase B

6

AC Current C

AC Current phase C

8

AC Voltage AB

AC Voltage phase AB

9

AC Voltage BC

AC Voltage phase BC

10

AC Voltage CA

AC Voltage phase CA

11

AC Voltage AN

AC Voltage phase AN

12

AC Voltage BN

AC Voltage phase BN

13

AC Voltage CN

AC Voltage phase CN

16

PV1 Voltage

PV1 Voltage

17

PV1 Current

PV1 Current

18

PV2 Voltage

PV2 Voltage

19

PV2 Current

PV2 Current

20

PV3 Voltage

PV3 Voltage

21

PV3 Current

PV3 Current

22

PV4 Voltage

PV4 Voltage

23

PV4 Current

PV4 Current

24

AC Power

AC Power

25

DC Power

DC Power

26

AC Frequency

AC Frequency

30

AC Energy

Total AC Energy

33

Temperature

Cabinet temperature

40

Daily Energy Yield

 

42

Battery 1 power

> 0: charging

< 0: discharging

43

Battery 1 SOC

Battery’s state of

capacity

44

Battery 1 current day charge

 

45

Battery 1 current day discharge

 

46

Battery 1 total charge

 

47

Battery 1 total discharge

 

55

Powermeter

> 0: charging

< 0: discharging

 
 

Logic Functions 

Rich features

The KNX logic module is a virtual extension module that is part of the ETS application on the inverters gateways. Each logic module includes 8 logic functions including logic gates, sequences, triggers, math operation and weekly calendar events.

  • Up to 64 logic functions using extension modules
  • Logic Gate with 8 inputs, configurable output delay and inversion 
  • Sequence with 4 steps, configurable outputs delays and datatypes
  • Trigger with inputs logic, delays and weekly calendar events
  • Math operations with configurable objects type and delays

User manual & ETS Database

WHERE TO BUY ?

This product is available on our web shop

 Customer feedback

Gateway für Fronius Gen 24 und BYD HVS

Rated 5 out of 5
October 31, 2023

Nicolas hat mich bei der Installation und bei der Funktionserweiterung unterstützt, er bietet einen super Support !
Danke nochmals an dieser Stelle. Gateway funktioniert einwandfrei !

Steffen

Perfect Remote-Support to solve my problem

Rated 5 out of 5
October 13, 2023

At the beginning there were difficulties with the Modbus communication between the Elausys Gateway and the SMA inverter.
All my attempts to find and solution for this problem failed. When I got stuck, i called the Elausys-Support-Team.
They connected to my site remotely. Luckily they was able to solve the challenge.
The SMA expects a special UnitID for communication with my SunSpec Profile (+123).
Again – thank you very much for your support!

B, Niemann

Support for Battery integration

Rated 5 out of 5
August 22, 2023

Hi,
i am More then happy with the great support of Nicolas. He implement me the Battery Status for my Solar Edge Battery within 1 hour!
Great product, great support.
thanks 🙂

Christian Schönhöfer

Working very well and great support !

Rated 5 out of 5
May 25, 2023

I use this module since 2 years (with a SE7K inverter), without any issues: well working and really stable !
And the support is very fast !
Thanks a lot for that !

David

Gateway for Solar Edge

Rated 5 out of 5
May 22, 2023

works very good out of the box!
I like it !

Christian Schönhöfer

Klasse Teil

Rated 5 out of 5
April 3, 2023

Das Gerät hat vom ersten Programmieren an funktioniert. Einfach zu programmieren, einfach klasse 🙂

Stefan Opitz

Great device and great support!

Rated 5 out of 5
January 25, 2023

I bought the gateway for our SolarEdge SE10K. I had some problems during the installation and emailed ELAUSYS. After a TeamViewer session, all problems could be solved. The problem was with the inverter… The support was really fast, competent and friendly. Now everything works fine.

J. Haas

Gateway for Solar Edge inverters

Rated 5 out of 5
February 22, 2022

INV-KNX- Gateway for Solar Edge inverters can translate between TCP modbus and KNX via ethernet connection. The Integrator has the ability to use almost 40 communication objects for monitoring and status.

Athanasios iLiadis, System Integrator - Cognitive

Great - it works from first second.

Rated 5 out of 5
February 22, 2022

Great – it works from first second.
Also very good support if you need (its simple).

Bernhard Haba, CEO - HABA Verpackung GmbH

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