KNX gateway for SMA Inverters

The KNX gateway for SMA inverters provides a simple solution to transfer all relevant data from 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 SMA SUNNY BOY / TRIPOWER 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

DESCRIPTION

The KNX interface module INV-KNX is a KNX gateway for the Huawei SUN2000 inverters. It provides KNX group object for all relevant values from the inverter. See below for the complete list of objects. 

This gateway is intended to be used with an SMA inverter compatible with the SMA 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 batteries, these 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

3

AC Current

AC Total Current value

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

24

AC Power

AC Power

26

AC Frequency

AC Frequency

27

AC VA

AC Apparent power

29

AC PF

Power factor

30

AC Energy

Total AC Energy

32

Insulation

Insulation resistance

33

Temperature

Cabinet temperature

34

Status 1

Operating status (St):

1 = Off

2 = Wait for PV voltage

3 = Starting

4 = MPP

5 = Regulated

6 = Shutting down

7 = Error

8 = Waiting for electric utility company

41

Battery 1 Running Status

 

42

Battery 1 power

> 0: charging

< 0: discharging

User manual & ETS Database

Version : 1.01

Applicable to all products delivered after 01-JUL-2020

WHERE TO BUY ?

This product is available on our web shop