SOLAX POWER X1-Fit 3.7KW-7.5KW Power Inverter Installation Guide

SOLAX POWER X1-Fit 3.7KW-7.5KW Power Inverter

Product Information

• Product Name: X1-Fit 3.7KW-7.5KW Inverter
• Packing List:
  • X1-Fit G4 series inverter
  • Bracket
  • Waterproof cover x 1
  • Battery connection terminals x 1
  • Waterproof connector with RJ45 x 4 (Meter/DRM/BMS/COM)
  • RJ45 terminals x 1
  • M5 inner hexagon bolt x 1
  • OT terminal x 1
  • Expansion bolt, Gasket, Self-tapping bolt x 3
  • Meter x 1 (Optional)
  • CT 2 Kit x 1 (Optional)
  • Quick Installation Guide x 1
  • X1-Fit User Manual 3.0kW – 7.5kW x 1
  • CT x 1
  • Pocket WiFi x 1
• Tool Preparation:
  • Hammer drill (10)
  • DC Voltage range 1100 V DC
  • Torque screwdriver (Crosshead M5)
  • Socket wrench set (Hexagon)
  • Diagonal pliers
  • Hexagon keys
  • Utility knife
  • Multifunction terminal crimping tool (RJ45)
  • Rubber hammer
  • Tape measure
  • Crimping Tool
  • Marker
  • Euro terminal crimping tool
  • Spirit level

Product Usage Instructions

Mounting Steps

1. Use a marker to mark the drilling holes of the bracket on the wall.
2. Drill holes at marked spots with a depth of 80mm.
3. Insert the expansion bolt into the hole and use a rubber hammer to knock the expansion screw bolt into the wall.

Battery Connection

• Step 1: Prepare 8-10 battery power lines and find the DC plug (+) and DC plug (-) using diagonal pliers from the bag.
• Step 2: Insert the stripped cables into the DC plug (-) and DC Plug (+) respectively.
• Step 3: Press down on the spring by hand until you hear a clicking sound, then push the ends together and tighten the screw joints.
• Step 4: Insert the battery power lines into the corresponding BAT port (+) and (-) of the inverter.
• Note: After the BMS communication between the battery and the inverter is finished, the battery will work normally.
• Make sure to connect the battery to the BAT port, not the PV port. Also, ensure that the positive and negative wires of the battery are not reversed.

Grid and EPS Connection

• Diagram A: Neutral line and PE line are separated from each other, and the common load is connected to the EPS port (For most countries).
• Diagram B: Neutral line and PE line are separated from each other, and all loads connect to the EPS port (For most countries).
• Diagram C: Neutral line and PE line are combined together, and the common load is connected to the EPS port (Apply to Australia).
• Note: Refer to the provided diagrams for connecting the grid, EPS, and battery loads to the X1-Fit G4 inverter and X1-Matebox. Make sure to follow the appropriate diagram based on your country’s requirements.

Battery Connection

Battery connection diagram:

Note:

• When using SolaX batteries, it is recommended that the number of battery control (T-BAT-5.8) is 1 and the number of battery modules (HV11550) is 0-2; the number of battery control (MC0600) is 1 and the number of battery modules (HV10230) is 1-4 pcs.
• The battery port connection line of the X1-Fit G4 M version inverter is on the X1-Matebox, just connect it. It is necessary to wire the W version according to the following steps.
• Step 1. Prepare an 8-10 battery power line, find the DC plug (+), DC plug (-) in the accessory bag.
• Step 2. Insert the striped cables into the DC plug (-) and DC Plug (+) respectively.
• Step 3. Press down on the spring by hand, you can hear a click sound, then push the ends together, and tighten the screw joints.
• Step 4. Insert the battery power lines into the corresponding BAT port (+), (-) of the inverter.
• Note! After the BMS communication between the battery and the inverter is finished, the battery will work normally.
• Note: BAT port, not PV port!
• Note: The positive and negative wires of the battery are not allowed to be reversed!

Packing List

Tool Preparation

Mounting Steps

• a ) Use a marker to mark drilling holes of the bracket on the wall .
• b) Drill holes at marked spots with depth of 80mm.
• c) Insert expansion bolt into the hole, use rubber hammer to knock the expansion screw bolt into the wall.
• d ) The bracket is aligned with the screw uses the inner hexagonal wrench to screw the tapping screw until the expansion bolt “bang” is heard.
• e) Hang the buckle on the inverter to the corresponding position of the backplane.
• f ) Use the inner hexagonal wrench to tighten the inner hexagonal screw on the right side of the inverter.

Grid and EPS Connection

• Diagram A: Neutral line and PE line are separated from each other, and the common load is connected to the EPS port;(For most countries)
• Diagram B : Neutral line and PE line are separated from each other, all loads connect to the EPS port;(For most countries)
• Diagram C: Neutral line and PE line are combined together, and the common load is connected to the EPS port; (Apply to Australia)
• Diagram D: Neutral line and PE line are combined together, all loads connect to the EPS port;(Apply to Australia)
• The Grid and EPS ports of X1-Fit G4 M version inverter have been connected, and the W version needs to be wired according to the following steps.
• Step 1. Prepare a Grid cable (three-core wire) and an EPS cable (two-core wire), and then find the European terminal and waterproof cover in the accessory bag.

Grid Cable and Micro-breaker recommended

Model| X1-Fit-3.7-W| X1-Fit-5.0-W| X1-Fit-6.0-W| X1-Fit-7.5-W|  | Model| X1-Fit-3.7-M| X1-Fit-5.0-M| X1-Fit-6.0-M| X1-Fit-7.5-M
---|---|---|---|---|---|---|---|---|---|---
Cable (copper)| 6-8mm²| 8-10mm²| 8-10mm²| 8-10mm²|  | Cable (copper)| 3-4mm²| 4-6mm²| 4-6mm²| 6-8mm²
Micro-Breaker| 40A| 50A| 50A| 50A|  | Micro-Breaker| 25A| 32A| 32A| 40A

Step 2: The Grid and EPS cables go through the corresponding Grid and EPS ports of the waterproof cover. Remove the 12mm insulation layer at the end of the wire. Insert the European-style terminals respectively, and make sure that the stripped ends are inserted into the European-style terminal ,and finally use crimping pliers to press tightly.

Communication Connection

(BMS/Meter/CT/DRM/COM)

• Electric meter connection diagram
• CT connection diagram
• Note: CT2 Kit, is a convenient adapter accessory for X1-Fit G4 to monitor the grid-connected inverter. If you need it, please purchase it from the options.

LCD settings

• To select CT, you need to enter the Use setting, then enter CT or Meter Setting.

Meter /CT PIN is defined as follows:

Note!

• The electric meter and CT cannot be connected to one inverter at the same time. The meter cable is connected to pin terminals  4 and 5; the CT cable is connected to pin terminals 1 and 8; the reserved CT cable is connected to pin terminals 3 and 6.
• To connect the Communication line of the CT line, the lines need to be made on both sides, connecting the RJ45 terminal on one side and the Communication line Adapter on the other.
• One side of the finished cable, the Communication line adapter is inserted into the inverter, and one side of the RJ45 terminal is inserted into the CT connection.

COM Communication

• External communication equipment controls the inverter:
• Inverter communication control external equipment:

Note!

• Customers can communicate or control the inverter and external devices through the COM interface. Professional users can use pins 4 and 5 to realize data acquisition and external control functions. The communication protocol is Modbus RTU. For details, please contact SolaX. If the user wants to use the inverter dry contact to control external equipment (such as a heat pump), it can be used with SolaX’s Adapter Box. For details, please refer to the Quick Installation Manual of the Adapter Box.

The BMS pin is defined as follows:

Note!

• The BMS port on the inverter is the communication port for connecting the battery. The communication port on the lithium battery must be consistent with the definition of pins 4, 5, 7, and 8 above;

The DRM pin is defined as follows:

Note:

• For AS4777 DRM function, currently only PIN6 (DRM0) and PIN1 (DRM1/5) are functional, other PIN functions are under

Communication Connection Steps

• Step 1. Prepare a communication cable, and then find the communication adapter in the accessory bag.
• Step 3. Insert the prepared communication cables into the RJ45 terminals in sequence , and then use network cable crimping pliers to press them tightly.
• Step 4. Tighten the completed BMS / Meter / CT / DRM / COM / LCD communication line and tighten the waterproof plug.
• Step 5: Finally, find the corresponding BMS / Meter / CT / DRM /CAN/ COM / LCD poets on the inverter and insert the communication cable into the corresponding ports.

Grounding Connection

(mandatory)

• The ground wire port of X1-Fit G4 M version inverter has been connected
• Step 1. Prepare a one-core cable (3-4 mm²), and then find the ground terminal in the accessories.
• Step 2. Strip the grounding cable insulation(length”L2), insert the stripped cable into the ring terminal, and then clamp it.
• Step 4. Find the ground connection port on the inverter, and screw the ground wire on the inverter with an M5 Allen key

Monitoring Operation

• Dongle connection diagram

Wireless monitoring accessories connection steps:

• Step 1. First, find the DONGLE port of the inverter.
• Step 2. Plug Pocket WiFi into the DONGLE port.

Start Guide

Export Control

Start Inverter

After the inverter is checked, the inverter will take the following steps:

1. Make sure that the inverter is fixed on the wall.
2. Ensure that all ground wires are grounded.
3. Confirm that all AC lines are connected.
4. Make sure the CT is connected.
5. Make sure the battery is well connected.
6. Turn on the Load switch and EPS switch
7. Turn on the battery switch.
8. Long press Enter for 5 seconds to exit the shutdown mode. Mode is the mode when it is turned off for the first time; factory default: off mode)

Firmware Upgrading

• I n order to upgrade the firmware smoothly, if the DSP and ARM firmware needs to be upgraded, please note that ARM firmware must be upgraded first, then DSP firmware!
• Make sure that this directory is completely consistent with the above table, do not modify the firmware file name, Otherwise, the inverter may not work!
• For X1-Fit G4, ensure that the PV input voltage is greater than100V (upgrade on sunny days). please ensure that the battery SOC is greater than 20% or the battery input voltage is greater than 90V. Otherwise, it may cause serious failure during the upgrade process!
• If the ARM firmware upgrade fails or stops, please do not unplug the U disk and power off the inverter and restart it. Then repeat the upgrade steps. Upgrade preparation

1. Please check the inverter version and prepare a U disk (USB 2.0/3.0) and personal computer before upgrading.
2. Please contact our service support through service@solaxpower.com to obtain the firmware, and store the firmware in the U disk according to the following path.

Update:

• For ARM file:“update \ARM\618.00361.00_Fit_X1G4_ARM_V1.01_0710.usb”; For DSP file:“update\DSP\618.00360.00_Fit_X1G4_DSP_V1.01_0710.usb”;

Upgrade steps

• Step 1. Please save the “Upgrade” firmware in your U disk first, and press the “Enter” button on the inverter screen for 5 seconds to enter the OFF mode.
• Step 2. Locate the “update” port of the inverter, use a flat-blade screwdriver or coin with the same width to remove the waterproof cover, and insert the U disk.
• Step 3. LCD operation, enter the upgrade interface “update”, as shown below(a): Please press the up and down keys to select ARM, then press the bottom of the page to select “OK”, press the enter key to enter the software version interface ;
• Step 4. Please confirm the new firmware version again and select the firmware to upgrade. The upgrade takes about 20 seconds.(d) When it is completed, the LCD screen returns to the “Update” page.

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