Mastervolt Soladin grid connected solar invertor

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Hi guys,

I am now the proud owner of a modest solar installation that came with a Mastervolt Soladin grid connected solar invertor. I would now like to get the values into pimatic so i can use my own electricity in the most efficient way. Has anybody any experience with this invertor?

@fregger As far as I understand this the Soladin inverter only provides a RS485 interface (RS-232 if you the PC-Link converter cable. Surprisingly, none of the data logger solutions like SolarView seem to support this inverter

There are a few intersting projects though

• https://github.com/jhonniedj/SunnyPi - a student project for Solardin data logger raunning raspi
• https://github.com/vChrisR/esp8266-pv-logger - a WiFi data logger based on SolaDin
• https://github.com/vChrisR/SolaDin

@mwittig Thanks for the info, it only has wifi and for now it connects with intelliweb.mastervolt.com/#demo

@fregger OK, that’s nice, but as far as I know, accessing the data locally via Wifi is not supported. I think you have two options:

• possibly use RS-485 interface (if the serial port is still provided with model you have), or
• create a third party app to get the data via your intelliweb account. There is a documented API for this which is based on MQTT. You might be able to interface it using pimatic-mqtt. https://www.symcon.de/forum/attachment.php?attachmentid=34745&d=1467291401

EDIT: Here is another interesting project for interfacing the soladin inverters via RS-232 or USB: http://www.solget.nl. By way of solget, WebSolarLog (WSL) claims to support Solardin inverters. This might be intersting as there is a pimatic plugin for WSL, however, the WSL has not been active for about two years.

It’s possible to use MySensors for that. On the MySensors forum there are some people who have used a wired RS485 network through their house in stead of wireless. You connect the RS485 gateway to your RPi and with the MySensors plugin you can then get the values from your inverter.

@DavidZH said in Mastervolt Soladin grid connected solar invertor:

You connect the RS485 gateway to your RPi and with the MySensors plugin you can then get the values from your inverter.

But then you still need to decode the serial line protocol. At least, I did not find a MySensors sketch for this. Doing the decoding as part of pimatic is possible but not trivial.