EASUN 6.2KW Hybrid Solar Inverter User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the EASUN 6.2KW Hybrid Solar Inverter. This all-in-one off-grid inverter features a built-in 120A MPPT controller, pure sine wave output, and supports a 48VDC battery system. It is designed for various applications, including home appliances and personal computers, and includes a built-in WiFi module for remote monitoring. Please read this manual thoroughly before installation and operation to ensure proper use and safety.

2. Safety Information

Please observe all warnings and instructions in this manual. Before using the unit, read all instructions and cautionary markings on the unit, the batteries, and all appropriate sections of this manual. Only qualified personnel should install and operate this device. Improper installation or operation may result in electric shock, fire, or other hazards.

• Ensure all connections are secure and correctly polarized.
• Do not disassemble the unit. There are no user-serviceable parts inside.
• Keep the inverter away from flammable materials and moisture.
• Ensure adequate ventilation around the inverter to prevent overheating.
• Always disconnect power before performing any maintenance or cleaning.

3. Package Contents

Upon unpacking, please ensure all items are present and undamaged:

• EASUN Hybrid Solar Inverter Unit
• Wireless WiFi Module
• User Manual
• Communication Cable (e.g., RS232/RS485 cable)

Image: EASUN 6.2KW Hybrid Solar Inverter, highlighting 48V, 230VAC, 120A Max Solar Charge, 6500W Rated Power, 500VDC Max PV Array Voltage, and Built-in WIFI.

4. Product Overview

4.1 Key Features

• Pure sine wave inverter
• Built-in MPPT solar charge controller (120A)
• Configurable input voltage range for home appliances and personal computers via LCD setting
• Configurable battery charging current based on applications via LCD setting
• Configurable AC/Solar Charger priority via LCD setting
• Compatible with mains voltage or generator power
• Auto restart while AC is recovering
• Overload, over temperature, and short circuit protection
• Smart battery charger design for optimized battery performance
• Cold start function
• Built-in WiFi module for remote monitoring via APP
• Parallel capability: ISolar SMG II 6.2KP 48V WiFi supports up to 12 units (1-phase or 3-phase). ISolar-SMG-III-6.2KW-Wifi does NOT support parallel operation.

4.2 Inverter Components and Connections

Image: Front panel and bottom connection ports for the EASUN Hybrid Solar Inverter (SMG II model shown).

Image: Detailed view of the inverter's rear connections, including AC In, AC Out, RS232, PV In, RS485, Battery In, Grounding, Parallel Communication Port, and Power On/Off switch.

Front Panel:

1. LCD screen: Displays operational status and settings.
2. LED Indicator: Provides visual status of the inverter.
3. Touch buttons: For navigation and setting adjustments.

Rear Connections:

1. AC Input: Connects to grid or generator AC power.
2. AC Output: Connects to household loads.
3. RS232 Communication Port: For data communication.
4. PV Input: Connects to solar panel array.
5. RS485 Communication Port: For data communication.
6. Battery Input: Connects to battery bank.
7. Grounding: For safety grounding.
8. Parallel Communication Port (only for parallel models, e.g., SMG II): For connecting multiple inverters in parallel.
9. Power On/Off Switch: Main power control.

5. Specifications

6. Setup & Installation

6.1 System Diagram

Image: General system diagram showing the inverter connecting solar panels, external battery packs, utility grid, and home appliances.

Image: System diagram illustrating operation with a battery connected, showing power flow from solar, generator/utility, to battery and home appliances.

6.2 Solar Panel Connection

When selecting and connecting PV modules, consider the following:

• Connecting panels in series increases the voltage. The total PV voltage needs to be between the inverter's PV voltage range (60-500VDC).
• Ensure the total power of solar panels does not exceed the maximum PV array power of the inverter (6500W).
• The open circuit voltage (Voc) of PV modules should be higher than the minimum battery voltage.

Image: Guidance on connecting solar panels, emphasizing voltage range and total power limits. Shows an example for ISolar SMG III.

Image: Detailed PV connection diagram and calculation examples for ISolar SMG II 6.2KP, including maximum power, voltage, and current specifications for PV modules.

6.3 Battery Connection

The 6.2KW models support a 48VDC battery system. Connect four 12V batteries in series to achieve the required 48VDC. Ensure correct polarity when connecting the battery bank to the inverter.

Image: 48VDC Battery Connection Diagram, showing four 12V batteries connected in series to the inverter.

6.4 Parallel Operation (ISolar SMG II 6.2KP 48V WiFi only)

The ISolar SMG II 6.2KP 48V WiFi model supports parallel operation for increased capacity, up to 12 units in single-phase or three-phase configurations. The ISolar-SMG-III-6.2KW-Wifi model does NOT support parallel operation.

Image: Diagram illustrating parallel operation for nine inverters in a single-phase power connection.

7. Operating Instructions

7.1 LCD Display and Function Keys

Image: Overview of the inverter's LCD display, LED indicators, and function keys.

The LCD display provides real-time information about the inverter's status, including input source, battery information, output information, and mode of operation. Use the function keys (ESC, UP, DOWN, ENTER) to navigate through menus and adjust settings.

7.2 LED Indicators

7.3 Display Icons and Function Description

Image: Table describing various display icons and their functions, including input source, configuration, fault, output, battery, and mode operation information.

7.4 Communication

The inverter includes a built-in WiFi module, allowing you to check the inverter's operation status remotely via a dedicated mobile application. It also supports RS232 and RS485 communication interfaces for advanced monitoring and control.

8. Maintenance

Regular maintenance ensures optimal performance and longevity of your inverter. Perform the following checks periodically:

• Cleaning: Keep the inverter's ventilation openings clear of dust and debris. Use a dry cloth to clean the exterior.
• Connections: Periodically check all electrical connections (PV, battery, AC input/output) for tightness and corrosion.
• Environment: Ensure the operating environment remains within specified temperature and humidity ranges.
• Battery Health: Monitor battery voltage and performance. Ensure batteries are properly equalized, especially in parallel systems.

9. Troubleshooting

If the inverter is not functioning correctly, refer to the LED indicators and LCD display for error codes or warning messages. Common issues and general troubleshooting steps include:

• No Power: Check AC input, battery connections, and the power on/off switch.
• No Output: Verify AC output connections and check for overload conditions.
• Battery Not Charging: Inspect PV input connections, solar panel array, and battery health. Check charging current settings.
• Fault/Warning Codes: Consult the detailed error code section in the complete user manual (if available as a separate PDF) for specific remedies.

For persistent issues, contact customer support.

10. User Tips

• When using the ISolar SMG II 6.2KP solar inverter in parallel, ensure that all connected batteries are equalized to maintain system balance and performance.
• Utilize the built-in WiFi module to remotely monitor your inverter's status and performance via the mobile application for convenience and early detection of potential issues.

11. Warranty & Support

For warranty information, technical support, or service inquiries, please refer to the contact details provided with your purchase or visit the official EASUN POWER website. Keep your purchase receipt as proof of purchase for warranty claims.