SolaX X1-Hybrid 3KW-5KW Quick Installation Guide

II Mounting Steps

Follow these steps for mounting the inverter:

1. Mark the positions for four mounting holes on the wall.
2. Drill holes using a 10mm drill bit to a depth of at least 60mm.
3. Install expansion tubes into the drilled holes, then tighten the expansion bolts.
4. Align the inverter with the mounting bracket.
5. Secure the inverter by screwing the set screw on the left-bottom of the inverter tightly.
6. Optionally, an anti-theft lock can be installed on the left-bottom of the inverter.

Overview of Mounting

I Packing List

Ensure all the following items are included in the package:

• Inverter x1
• Bracket x1
• Expansion tube x 4
• Expansion screw x 4
• DC connectors (positive x2, negative x2)
• Battery connectors (positive x1, negative x1)
• DC pin connectors (positive x2, negative x2)
• AC terminal x8 (Note: Version I has 4 x 6AWG and 4 x 10AWG terminals; Version E & C have 4 x 10AWG and 4 x 8AWG terminals)
• Ring terminal (external) x1
• Ring terminal (internal) x2
• Gasket x1
• Grounding nut x1
• Set screw (for mounting) x1
• User manual x1
• Warranty card x1
• Quick installation guide x1
• Wifi module (optional) x1
• 8 pin positive cable terminal x1
• connector x2

III PV and AC Connection

PV Connection Steps (PV cable size: 12AWG)

Connect the PV cables using the provided DC connectors:

• Align the male and female connectors.
• Ensure correct connection of positive DC pin contact, negative DC pin contact, and clamp contact.
• Torque: 1.5±0.2Nm.

Note: The "I port" has been pre-wired during manufacturing.

AC Connection Steps (AC cable size: refer to Table 1 & Table 2)

1. Remove the top-down cover. Torque: 1.2±0.1Nm.
2. Prepare the AC wires (L-wire, N-wire, and PE wire).
3. Insert the AC cable into the AC port through the screw cap.
4. Connect the wires to the AC terminals inside the inverter.

Table 1: AC Terminal & Micro-breaker Recommendations for E Version & C Version

Table 2: AC Terminal & Micro-breaker Recommendations for I Version

Note: No need to connect wire on the "X port" by the end-user.

IV EPS Connection (for I version and E version)

The EPS (Emergency Power Supply) function allows the inverter to power loads during a grid outage.

I Version Inverter

EPS function is automatic. No changeover switch is required.

• Wiring Diagram Overview: Shows connections for PV (PV1, PV2), Battery, EPS breaker, RCD, Load, PE, N-BAR, E-BAR.
• EPS Connection Steps:
1. Make wires according to the table below (EPS cable size and recommended EPS breaker).
2. Insert EPS cable into the EPS port through the screw cap. Torque: 1.2±0.1Nm.
• Notes: The black cable (I port) is pre-wired.

E Version Inverter

EPS function can be manual or automatic, requiring a changeover switch or a contactor device.

• Wiring Diagram Overview: Shows connections for PV (PV1, PV2), Battery, EPS breaker, RCD, Load, PE, E-BAR, with a changeover device (DPDT) or a Contactor Device.
• EPS Connection Steps:
1. Make wires according to the table below (EPS cable size and recommended EPS breaker).
2. Insert EPS cable into the EPS port through the screw cap. Torque: 1.2±0.1Nm.
• Notes: Connect PE wire into the PE port. Please contact sales for compatible contactor purchase requirements.

Table: EPS Cable and Micro-breaker Recommendations

Recommended RCD: Type A. Recommended EPS breaker: 32A.

V Battery Connection

Connect the battery to the inverter following these steps:

• Battery Connection Diagram: Illustrates connections for PV, Battery, EPS, LAN, BMS, and WiFi ports.
• Battery Breaker: Install a non-polarized DC breaker before connecting to the battery for safe disconnection during maintenance. The breaker's nominal voltage must exceed the battery's maximum voltage, and its current rating should be greater than 32A.
• Power Connection: Connect the battery's positive (+) and negative (-) terminals to the inverter's BAT terminals.
• Communication Connection: The communication interface between the inverter and battery is RS485 or CAN, using an RJ45 connector.
• BMS PIN Definition:
• PIN 1: NTC
• PIN 2: GND
• PIN 3: GND
• PIN 4: BMS_CANH
• PIN 5: BMS_CANL
• PIN 6: X
• PIN 7: BMS_485A
• PIN 8: BMS_485B
• Note: Battery communication functions only if the battery BMS is compatible with the inverter.
• A: Power Connection Steps: Press down the spring until it clicks audibly into place. Ensure wire strands are visible in the chamber.
• B: Communication Connection Steps:
1. Prepare a communication cable (without sheath) and insert it through the cable connector from the accessories package.
2. Crimp the communication cable with an RJ45 plug provided within the cable connector.
3. Insert the cable connector into the BMS port inside the inverter and screw it tightly. Connect the other end of the communication cable to the battery's RS485 or CAN port.

VI Earth Connection & Start Inverter

Earth Connection Steps (Mandatory)

• Cable size: 12AWG.
• Use a ring terminal.
• Torque: 1.5±0.2Nm.

Start Inverter

Follow these steps to start the inverter:

1. Ensure the inverter is securely fixed to the wall.
2. Verify all DC and AC wirings are completed correctly.
3. Confirm the meter is connected properly.
4. Confirm the battery is connected properly.
5. Ensure the external EPS contactor is connected correctly, if applicable.
6. Turn on the AC switch and the EPS switch.
7. Turn on the PV/DC switch and the battery switch.
8. Long-press the "Enter" key for five seconds to exit Off Mode (the default mode for first-time use).

The inverter will start up automatically when sufficient PV energy is generated or when the battery is discharging. Check the status indicators (left indicator should be blue) and the LCD screen for the main interface.

VII Start Guide

Initial setup for the inverter:

1. Set language: Select from options like English, Deutsch, Italian.
2. Set date time: Input the current date and time (e.g., 2017-06-06 10:19).
3. Set the safety standard: Choose the appropriate safety standard for your region (e.g., VDE0126).
4. Set export control: Configure the "Use Value" (e.g., 10000W) to manage energy exported to the grid. User values must be less than factory values.
5. Set work mode: Choose from four modes available for on-grid conditions:
• Self Use (default): Prioritizes PV power for local loads, then battery charging, then grid export. Battery discharges when PV is insufficient.
• Back Up Mode: Prioritizes battery charge retention. Battery discharges for loads when PV is insufficient, with grid power supplementing if needed. Ideal for areas with frequent blackouts.
• Feed in Priority: Prioritizes feeding power to the grid, then supplying loads, then charging the battery. Suitable for areas with high feed-in tariffs.
• Force Time Use: Allows flexible setting of charging and discharging times, with an option to charge from the grid. Otherwise, it follows Self Use mode priorities.

VIII Firmware Upgrading

Keep your inverter's firmware up-to-date for optimal performance.

Preparation

• Ensure the inverter is steadily powered on.
• The inverter must have PV panels connected and the battery active throughout the upgrade process.
• You will need a PC and a USB drive.

Warning!

• Ensure the PV input power is greater than 150V (perform upgrades on a sunny day). Failure to do so may cause serious issues.
• If an upgrade is interrupted, use a USB drive formatted as FAT16 or FAT32, with a capacity under 32GB.

Upgrading Steps:

1. Contact SolaX service support for the latest update files. Extract them to your USB drive in the specified folder structure (e.g., update\ARM\...usb and update\DSP\...). Do not modify filenames.
2. Press and hold the "Enter" key for 5 seconds to enter Off Mode. Unscrew the waterproof lid and insert the USB drive into the "upgrade" port at the bottom of the inverter.
3. On the LCD, select the desired update (ARM or DSP) and press "OK" to confirm.
4. After the upgrade completes, the LCD will display "succeed" (for DSP upgrades). Remove the USB drive, screw the waterproof lid back on, press "Esc" to return to the Main interface, and then press "Enter" to exit Off Mode.

IX Meter / CT Connection

Meter Connection Steps:

1. Prepare a connector and two communication wires.
2. Unscrew the nut of the Meter connector and insert the two communication wires through it.
3. Strip the insulation from the communication wires. Insert one side of the wires into pin 1 and pin 2 holes of the 8-pin positive terminal (from accessories package) and screw tightly. Torque: 0.2±0.1Nm.
4. Insert the positive terminal into the corresponding negative terminal block inside the inverter and screw tightly. Refer to the meter's instructions for specific wiring details. Torque: 0.4±0.1Nm.

Meter PIN Definition: Connect the RS485 line from the meter with an RJ45 connector and finish configuration. Plug this RJ45 connector into the "Meter" port of the inverter. Ensure meterA (pin1) and meterB (pin2) are connected to the meter's RS485A and RS485B ports, respectively.

CT Connection Steps:

1. Insert the side with two communication cables of the CT into the Meter port on the inverter and screw the cap tightly.
2. Strip the insulation from the communication wires. Insert one side of the wires into pin 5 and pin 6 holes of the 8-pin positive terminal and screw tightly.
3. Insert the positive terminal into the corresponding negative terminal block inside the inverter and screw tightly.

CT PIN Definition: pin5 (-), pin6 (+). Important: The arrow direction on the CT must point towards the public grid side.

X Monitoring Operation

SolaX offers two monitoring options: WiFi (optional) and Ethernet (LAN).

WiFi (Optional)

The inverter provides a WiFi port to collect data and transmit it to the monitoring website via a Pocket WiFi device.

• WiFi Connection Steps:
1. Plug the Pocket WiFi into the "WiFi" port at the bottom of the inverter.
2. Establish a connection between the inverter and your router.
3. Create a user account online (refer to the Pocket WiFi user manual for details).

Ethernet (LAN)

LAN communication is a standard interface for transmitting data between the router and inverter over a local network.

• Application Occasion: Use the LAN port with a data cable when the WiFi signal is too weak for data transmission. The WiFi module must still be connected when using LAN.
• LAN Connection Steps: Refer to the BMS connection steps for LAN connection, noting potential differences in PIN definitions and port positions.

LAN PIN Definition: Communication interface between inverter and router is RS485 with an RJ45 connector.