Power plant connection
The power plants can be connected to the grid in two ways:
| serial with grid power sensor | parallel with grid power sensor | |
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When configuring the power plant, select
- in: serial (internal) with grid power sensor
- ex: parallel (external) with grid power sensor
The power plants are configured as internal by default.
PV inverter
Obtaining relevant data from photovoltaic is possible by two ways:
1. adding power-sensor to measure produced electricity by PV (no connection to interver) - on how to add power sensor please see Power Sensor
2. connecting PV inverter by Modbus TCP to EVSE (only for SolarEdge inverters)
EVSE and PV inverter connection
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To add inverter on HEMS configurator:
- on settings page inside source table, select SolarEdge inverter. Please see settings
- on io mux page set IP address for inverter. Please see io_mux
To setup Modbus TCP on Inverter using SetApp:
- Select Site Communication menu
- RS485-1 → Protocol → SunSpec (Non-SE Logger)
- RS485-1 → Device ID, and enter the number 1
- Modbus TCP and set to Enable
- set TCP port to 502
Note:
The TCP server idle time is 2 minutes. In order to leave the connection open, the request should be made within 2 minutes.
It is important to follow rules above, firstly to set HEMS configurator following Inverter setup due to 2 minutes time frame.