Tools required:
- Laptop
- USB to serial cable + RJ45 to serial
- RJ45 crimping tool
- Cable tester
- Phillips screwdriver
- Ethernet cable/CAT5 cable
Step 1: Battery protocol
We first need to set the correct communication protocol on the battery for the Weco to communicate successfully with the Solis inverter, to do this you will need to turn on the battery by turning on the rocker switch on the top of the battery and then hold the silver run button until it lights up green.
Once the battery is on you can connect your USB to serial cable to the operator port of the Weco battery, ensuring that the pinouts are correct, you should pickup a COM Port on your laptop once completed.
Once the cable is connected to the battery and to your laptop, you should see a COM port under device manager, indicating that there are communications to the battery via COM Port 10.
Navigate to https://wecobatteries.com/download-area/ and under Software you will be able to find the latest software tools used to view into the Weco batteries.
After downloading the above file, you can then open that to view into 4K4LTs / 5K0 batteries.
Open the executable.
Here you will select the correct COM port which your USB to serial cable is connected to and then select ‘Connect’.
After connecting to the battery you will be able to see the current SOC% and other information regarding the battery, at the bottom right you can select what inverter protocol you would like the battery to be set to.
After Selecting SOLISCAN, you can select ‘Set’ and after about 2 minutes you will be able to see if the protocol has changed to SOLISCAN.
Step 2: Solis Inverter setup
Download Soliscloud app from the Playstore or the iStore and create your own account.
Under the Bluetooth connection method the Inverter will be listed as INV_”Serial Number”
Once you have connected to the inverter you will see the screen below.
Sometimes it doesn’t pickup the max charging and discharging current from the battery, you can confirm this by looking at the sticker on the battery, for the 4k4LT we can see that its max discharge and charge is 92Ah at 1C.
Step 3: Communication cable between Synapse and Weco
After you have configured the battery, set the protocol on the inverter you can now make up a communication cable which will link between the Synapse and Weco.
The communication cable connects to CAN-A on the Weco Side and on the BMS port of the Synapse.
After connecting the communication cable you will be able to see the Weco SOC% and the battery indicator on the Synapse screen will go from orange to white and show the percentage in blocks.
