Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Fix Sofar installation to work better with ReadTheDocs #1246

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Fix Sofar installation to work better with ReadTheDocs #1246

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
38 changes: 17 additions & 21 deletions docs/sofar-installation.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ How to install the RS485 connection to your Sofar Solar inverter hardware.

## LSE3 Stick Logger

The easiest installation is by replacing the LSW3 WiFi Stick Logger that comes with the inverter with the LSE3 Ethernet Stick Logger. You just need to replace the stick, plugin the Ethernet cable and you are ready to go. However it comes with a couple of cavets as you can see in the [FAQ](./sofar-faq.md).
The easiest installation is by replacing the LSW3 WiFi Stick Logger that comes with the inverter with the LSE3 Ethernet Stick Logger. You just need to replace the stick, plugin the Ethernet cable and you are ready to go. However it comes with a couple of caveats as you can see in the [FAQ](./sofar-faq.md).

![Image of installed LSE3 Stick Logger](images/installation-sofar-lse3-stick-logger.png)

Expand All @@ -17,24 +17,20 @@ Please see the [FAQ](./sofar-faq.md), if you run into issues.
This is a bit more complicated, however the recommended solution.

1. Shutdown the inverter.
2. Disassemble the COM Port connector:
1. Unscrew the rear end from the connector.
2. Gently push the rubber cap to the back without pulling on the connected wires.
3. Then press the clips on the front and gently pull out the connector, while gently pushing the other cable from behind. Be careful not to disconnect any of the other wires.

![Image of COM Port](images/installation-sofar-com-port.png)
3. Recommended cable is an UTP cat.x cable. In the rubber cap you will find three inlets for cables. You might have to pull out one of the cable inlets, that is still protected by a smaller rubber cap.
4. Take a twisted pair, e.g. orange and orange/white, and connect orange to pin 1 (A+), and orange white to pin 4 (B-).

Note: Pin 1 and pin 2 are A+ and internally connected with each other in the inverter. The same applies to pin 3 and pin4 for B-.
5. Likely you have just one inverter, so this will be the end point of the RS485 bus. So, you have to install a termination resistor of 120Ohm at this end. Connect this to pins 2 and 3.

2. Disassemble the COM port connector: Unscrew the rear end from the connector.
3. Gently push the rubber cap to the back without pulling on the connected wires.
4. Then press the clips on the front of the COM port connector and gently pull out the connector, while gently pushing the other cable from behind. Be careful not to disconnect any of the other wires.
![Image of COM Port](images/installation-sofar-com-port.png)

5. Recommended cable is an UTP cat.x cable. In the rubber cap you will find three inlets for cables. You might have to pull out one of the cable inlets, that is still protected by a smaller rubber cap.
6. Take a twisted pair, e.g. orange and orange/white, and connect orange to pin 1 (A+), and orange white to pin 4 (B-). Note: Pin 1 and pin 2 are A+ and internally connected with each other in the inverter. The same applies to pin 3 and pin4 for B-.
7. Likely you have just one inverter, so this will be the end point of the RS485 bus. So, you have to install a termination resistor of 120Ohm at this end. Connect this to pins 2 and 3.
![Image of COM Port connector opened](images/installation-sofar-com-port-open.png)
6. If your RS485 Adaptor provides a GND Input, you can connect it to pin 12. This can improve reliability.
7. Carefully assemble the COM Port connector again in reverse order.
8. Plugin in the COM port. Now you can verify that everything is connected properly by measuring the resistance on the other side of the cables. It should measure 120 Ohm.
8. Connect the other sides of the RS485 cable to your adaptor (e.g. orange to A and orange/white to B).
9. Turn on the inverter.
10. Once HomeAssistant and this integration is properly configured and starts to query data you should be able to see an RS485 symbol on the top left. When this symbol is visible RS485 communication is properly established.

![Image of inverter display with RS485 symbol](images/installation-sofar-display.png)

8. If your RS485 Adaptor provides a GND Input, you can connect it to pin 12. This can improve reliability.
9. Carefully assemble the COM Port connector again in reverse order.
10. Plugin in the COM port connector on the inverter. Now you can verify that everything is connected properly by measuring the resistance on the other side of the cables between A+ and B-. It should measure 120 Ohm.
11. Connect the other sides of the RS485 cable to your adaptor (e.g. orange to A+ and orange/white to B- or whatever combination you have chosen in step 6).
12. Turn on the inverter.
13. Once HomeAssistant and this integration is properly configured and starts to query data you should be able to see an RS485 symbol on the top left. When this symbol is visible RS485 communication is properly established.
![Image of inverter display with RS485 symbol](images/installation-sofar-display.png)
Loading