This guide covers communication setup between the KanEL KF1 and Solis S6 hybrid inverters in the 30-50 kW range with WeCo A-Kool battery cabinets. It applies to:

The image above shows a Solis S6 30-50 kW hybrid inverter -- a large white wall-mounted unit with a colour touchscreen display on the upper half and multiple cable glands at the bottom. A note at the bottom indicates the RS485 port pin definition follows EIA/TIA 568B: RS485A on Pin 5 (Blue/White) and RS485B on Pin 4 (Blue).

Before commissioning the system, the installation should be finished like any normal Solis hybrid installation:

1. Solis data logger is online and the plant is set up in Solis Cloud

2. Firmware is upgraded to the latest version for "VPP Control with KanFlex" -- contact Solis to request the upgrade

3. Solis smart meter is installed properly and consumption/production matches the DSO energy grid meter

- To verify: turn off solar panels and load different phases separately if there is any doubt

4. Battery charge/discharge is working -- put a large load on the building and confirm the inverter powers it from the battery while grid power stays at zero

5. Connect the KF1 according to this guide

6. Note down the KF1 MAC, inverter type, and battery type for future reference

The image above shows the front panel of the KF1 unit with ports labelled PWR (bottom-left), LAN1, LAN2, LAN3, WAN (top row), RS232 (bottom-centre with DB-9 connector), RS485 (top-right, 6-pin terminal), and I/O (bottom-right).

The KF1 is delivered with a power supply and a 2-metre cable. Several installation options are available:

After powering on, check the KF1 status light:

The image above shows the KF1 front panel with the WAN port visible. The WAN port is the fourth RJ45 port from the left in the top row, used for wired internet connection.

See the dedicated KF1 internet connection guide for full instructions covering wired, Wi-Fi, Wi-Fi bridge, and mobile connections.

Key recommendation: use a wired fibre connection whenever possible. It is the most reliable, cost-effective, and low-maintenance option.

The image above shows the back of the KF1 unit with a QR code label and MAC address printed on it, used for device registration.

The KF1 must be registered so KanEL can configure it remotely. The device should be connected to the internet before registering.

The image above shows the KF1 front panel with the LAN1 port visible. LAN1 is the first RJ45 port from the left in the top row, used for the data logger connection.

For Solis systems, both the KanEL data logger and a Solis smart meter are used depending on system size:

Important: the group fuse ("gruppsäkring") to the inverter must be appropriately dimensioned. For example, a Solis 50 kW system should use a fuse of minimum 76A per Solis manual; KanEL recommends minimum 80A. Please consult the Solis manufacturer manual.

The diagram above shows a single-line diagram for a Solis 50 kW system illustrating correct fuse dimensioning. It shows a 400V 3-phase 200A power grid connection through a DSO Meter and Solis Smartmeter Eastron/Actrel, through a fusebox, to the building load (10A consumption). The Acuvim Meter/Datalogger connects via LAN1 to the KF1. The inverter is connected through 80A fuses, with 73A output from the inverter and 63A grid output capacity.

1. Mount the 3 CTs (current transformers) included with the KanEL data logger on the incoming phases

2. Connect a network cable between the data logger and the LAN1 port on the KF1

See the data logger installation guide for detailed instructions.

For installations where the main fuses are close to the inverter, use the internal CT wiring method:

1. Mount the 3 CTs included with the Solis inverter delivery on the incoming phases

2. Lead the CT wires through the COM3 port at the bottom of the inverter

3. Connect the CT wires to the 14-pin communication terminal block

The diagram above shows the CT wire connections to the Solis 30-50 kW inverter's 14-pin communication terminal block. The terminal block is located inside the inverter accessed through the COM3 port. The wiring table shows:

The accompanying diagram (Figure 3.19) shows the physical inverter with the AC Grid port on the left, the 14-pin communication terminal block on the upper right, and CTs clamped on the three phase conductors (L1, L2, L3) with arrows pointing towards the grid. The load connects before the CTs, and the grid connection is on the right side.

For installations where the main fuses are far from the inverter, use an external Eastron meter:

1. Mount the 3 CTs included with the Solis inverter delivery on the incoming phases

2. Connect a network cable between the Eastron smart meter and the METER port on the inverter

The diagram above shows an alternative smart meter setup using an external Eastron meter. The Acuvim Meter/Datalogger connects to the KF1 via LAN1. The Solis 50 kW Master inverter has a Meter port that connects via network cable to the external Eastron smart meter. CTs are mounted on the incoming phases near the main fuses. This method is used when the main fuses are located far from the inverter.

After installing CTs, verify correct installation by checking the power factor on the data logger:

1. Press the M button twice to access the power factor screen

2. Check the values for L1, L2, and L3

The image above shows the data logger display screen showing power factor (PF) values for all three phases: L1 = 0.999, L2 = 0.999, L3 = 0.999. This indicates correctly installed CTs with consistent power direction across all phases.

The image above shows the KF1 front panel with a red rectangle highlighting the RS232 port. The RS232 port is a DB-9 connector located at the bottom-centre of the front panel, flanked by two mounting screws.

Communication between the KF1 and the BMS depends on the battery system configuration.

Two cables are required:

Cable 1: KF1 RS232 --> HV box OPERATOR (RJ45 to DB-9)

This cable can be ordered from KanEL directly. Alternatively, build your own:

The diagram above shows the cable construction for connecting the KF1 RS232 port to the WeCo HV box OPERATOR port. On the left side is an RJ45 connector with T-568B pinout (1=White Orange, 2=Orange, 3=White Green, 4=Blue, 5=White Blue, 6=Green, 7=White Brown, 8=Brown). On the right/top is a DB-9 male connector with pins 5, 3, and 2 receiving the three wires. Parts list: 1) Premade network cable 22-24 AWG, 2) Male DB-9 connector L777RRE09P, 3) DB-9 Backshell 86303637BLF, 4) Open barrel pins L17RRD1M11400. Instructions: Verify cable is wired T-568B with Pin 1=orange/white and Pin 2=orange, cut cable in half, strip insulation, remove all wires except orange, orange/white and green/white, crimp pins on each wire, insert pins and mount backshell.

Parts list:

Instructions:

1. Verify the cable uses T-568B wiring (pin 1 = white/orange, pin 2 = orange)

2. Cut the cable in half

3. Strip off the insulation

4. Remove all wires except orange (pin 2), white/orange (pin 1), and white/green (pin 3)

5. Crimp open barrel pins on each wire

6. Insert pins into the DB-9 connector:

7. Mount the backshell and ensure the cable is securely fastened

Cable 2: Inverter BMS --> HV box CAN2 (RJ45 to RJ45 with USB-RS232 adapter)

The diagram above shows "Cable 2" for connecting the WeCo HV-Box/Battery/CAN Combiner to the system. The top section shows an RJ45 connector (copper facing up) with pins 1 (White Orange), 2 (Orange), and 3 (White Green) highlighted, connecting to the WeCo HV-Box. The bottom section shows a DB-9 female terminal block and a standard USB-RS232 adapter. The DB-9 terminal block connections are: White-green to DB9-2, Orange to DB9-3, White-orange to DB9-5. Supplier references are listed for both the DB-9 female terminal block (Kjell 68851, Dustin 65268, Amazon "DB9 breakout plug") and the USB-RS232 adapter (Kjell 65642/65640, Dustin UC232A1-AT, Clas Ohlson 39-1371, Amazon 7890436388466).

1 x A-Kool with 1 x HV-Box:

1 x A-Kool with 2 x HV-Boxes:

The image above shows the KF1 front panel with a red rectangle highlighting the RS485 port. The RS485 port is a 6-position terminal block (gold/yellow coloured) located at the top-right of the front panel.

Communication between the KF1 and Solis inverters uses Modbus RTU (RS485) via CAT6 network cables.

Important: official Solis installation documentation may specify different cables for inverter-to-EMS communication. KanEL KF1 is configured for best possible performance, so installers should refer exclusively to this guide when connecting KF1 to Solis inverters.

1. Strip a standard CAT6 cable on one end

2. Identify the wires using T-568B colour code:

- Pin 4 (blue) = 485B "-"

- Pin 5 (white/blue) = 485A "+"

3. Connect:

- Blue wire --> terminal inputs 1 & 2 (- driver and - receiver)

- White/blue wire --> terminal inputs 4 & 5 (+ driver and + receiver)

The image above shows the 6-position green RS485 terminal block with pin layout and wiring. Positions 1 (top-left) and 2 (top-middle) are "- driver" and "- receiver" respectively, connected by the blue wire. Positions 4 (bottom-left) and 5 (bottom-middle) are "+ driver" and "+ receiver" respectively, connected by the white/blue wire. Positions 3 and 6 are not used.

4. Connect the RJ45 end to the KF1 port labelled RS485

5. Connect the terminal block end to the Solis inverter port labelled EMS

The image above shows the inside of the Solis 30-50 kW inverter's communication compartment with a red arrow pointing to the EMS port location on the communication board. The board shows multiple ports including CT Connector, RS002, and various communication terminals. The EMS connection point is on the upper portion of the board.

The table above shows all communication terminals on the Solis S6-EH3P(30-50)K-H inverter. The EMS port (highlighted with red border) is an RJ45 type port used for CAN communication between inverter and 3rd party external device or controller. Other ports include: BMS (RJ45, for CAN communication to battery BMS), Meter (RJ45, optional RS485 to smart meter), DRM (RJ45, optional demand response), P-A and P-B (RJ45, optional parallel operation), DIP Switch (2-1), HM (terminal block, pins 1-6 for CT wires), G-V (terminal block, pins 7-8 for generator), G-S (terminal block, pins 9-10 reserved), and ATS380V (terminal block, pins 13-14 for 380V ATS signal).

When using two inverters in parallel, the P-A port (Master) must be connected to the P-B port (Slave) with an RJ45 cable.

The diagram above shows a complete system single-line diagram for a Solis 30-50 kW installation with A-Kool battery cabinets. The system includes:

The image above shows the KF1 unit with the two SMA antenna connectors labelled MOBILE visible on the outer edges, and mobile signal strength LEDs on the right side of the front panel.

The KF1 has a built-in modem and SIM card that activates automatically as a backup if the primary internet connection fails. No configuration is needed.

After mounting antennas, wait a few minutes for the device to connect, then check:

If the connection does not work as expected, see the KF1 internet connection guide for troubleshooting.

Once all steps are completed, secure the KF1 in its permanent position:

Important: when assembling the unit, take care not to pinch or clamp any cables.

After completing all steps, confirm: