ELAUSYS / INV-KNX-SIG
Sigenergy KNX Gateway
The INV-KNX-SIG connects compatible Sigenergy systems to your KNX installation via Modbus TCP. Bring power, export energy, and supported battery and grid measurements into your KNX visualisation and automation, using a local network connection without a cloud service.
The product
Designed for your installation.
Connect your Sigenergy system to KNX
The Elausys INV-KNX-SIG makes system measurements available as KNX group objects. View energy information alongside other building information in HyperVisu or another KNX visualisation, and use the data in your energy-management logic.
The gateway communicates over the local network using its Ethernet connection. An internet connection or cloud service is not required for this communication.
Monitor production, battery storage, and grid exchange
Access power output, PV measurements, electrical measurements, and daily and accumulated export energy reported by the system. Export energy is distinct from total solar production.
On supported SigenStor battery installations, monitor operating status, state of charge, charging or discharging power, and daily and accumulated charge/discharge energy.
Grid import/export power is available from the Sigenergy plant grid sensor when it is installed and configured in the system.
The available data depends on the inverter model, firmware, selected communication profile, and installation.
Use energy data in KNX automation
The gateway includes 64 configurable logic functions, including logic gates, sequences, calendar triggers, and mathematical operations.
For example, use measured grid export to enable water heating through a suitable KNX actuator, or display battery charge level on a KNX visualisation. The connected equipment and configured logic determine how the installation responds.
Measurements update at a configurable interval of 1–255 minutes.
Compatibility and installation
Supported ranges include Sigenergy SigenStor EC, Sigen Hybrid SP / TP, and Sigen PV Max systems with a compatible Modbus TCP interface. Compatibility must be checked for the exact model and firmware.
Enable Modbus TCP in the Sigenergy system settings and configure the gateway for the appropriate system address. Battery and PV measurements depend on the installed system.
Installation requires a KNX bus connection, network access to the supported Modbus TCP interface, and an external 12–30 VDC power supply. KNX parameters are configured in ETS5 or ETS6; network settings are configured through the gateway’s web interface.
Check the documentation for the communication profile and firmware required by your installation.
Specifications
- Reference
- INV-KNX-SIG
- Manufacturer
- ELAUSYS
| Parameter | Specification |
|---|---|
| Product reference | INV-KNX-SIG |
| Supported inverter ranges | Sigenergy SigenStor EC, Sigen Hybrid SP / TP, and Sigen PV Max systems with a compatible Modbus TCP interface |
| Inverter connection | Modbus TCP over Ethernet, RJ45 |
| Communication profiles | Sigenergy Modbus |
| KNX measurements | Power, export energy, voltage, current, frequency, and other available system measurements |
| PV monitoring | Voltage and current for up to 4 PV strings, where available |
| Battery monitoring | 1 battery: status, power, state of charge, and daily and total charge/discharge energy on supported systems |
| Grid monitoring | Import/export power from the Sigenergy plant grid sensor |
| Data polling interval | 1–255 minutes |
| Logic functions | 64 |
| AC network configuration | Single-phase or three-phase |
| External power supply | 12–30 VDC |
| KNX bus current | <16 mA at 29 VDC |
| Isolation | Galvanic isolation from the KNX bus |
| Mounting | DIN rail, 2-module width |
| Operating temperature | +5 to +45 °C |
| Configuration | ETS5 / ETS6; web interface for network settings |
Key features
- Connect compatible Sigenergy systems to KNX over Ethernet
- Monitor power, PV measurements, and export energy
- Access battery and grid import/export data on supported installations
- Use 64 built-in logic functions for KNX automation
- Communicate locally without a cloud service or internet connection
- Configure in ETS5 or ETS6
- Compact 2-module DIN-rail housing
Documents & support
PDFInverter Gateway DatasheetProduct document · Opens in a new tabPDFQuick-Start-GuideProduct document · Opens in a new tabPDFSafety-and-Regulatory-Notice-ENProduct document · Opens in a new tabBrowse product supportFAQ
Frequently Asked Questions
Which Sigenergy systems are compatible?
Sigenergy SigenStor EC, Sigen Hybrid SP / TP, and Sigen PV Max systems with a compatible Modbus TCP interface. Check the documentation for your exact model, firmware, and communication interface before ordering.
Can I monitor a battery?
On supported SigenStor battery installations, monitor operating status, state of charge, charging or discharging power, and daily and accumulated charge/discharge energy. Availability depends on the inverter, firmware, and installation. These measurements can be used in KNX visualisation and logic.
Can I measure electricity imported from or exported to the grid?
Grid import/export power is available from the Sigenergy plant grid sensor when it is installed and configured in the system.
Can it switch appliances when surplus solar energy is available?
The gateway can provide measurements and KNX logic for energy-based automation. Switching or enabling an appliance requires a suitable KNX actuator or compatible control interface. Surplus-based operation also requires grid-exchange measurements and correctly configured logic.
Does it need an internet connection?
An internet connection or cloud service is not required for local communication with the supported Modbus TCP interface. The gateway and inverter system must remain reachable on the local network.
What do I need to install it?
A KNX installation, network connectivity to the supported Sigenergy Modbus TCP interface, an external 12–30 VDC power supply, and ETS5 or ETS6 for configuration. Enable Modbus TCP in the Sigenergy system settings and configure the gateway for the appropriate system address. Battery and PV measurements depend on the installed system.
How are grid power and energy counters used?
The plant grid sensor provides import/export power for monitoring and KNX logic. The supported energy counters report daily and accumulated export energy. Use the object definitions in the documentation to label these values correctly in your visualisation.