1. Introduction
This manual provides comprehensive instructions for the safe and efficient use of your EASUN MPPT Solar Inverter. This series of off-grid and hybrid solar inverters is designed to provide reliable power for various applications, integrating a pure sine wave inverter, MPPT solar charger, and battery charger functions. Key features include WiFi connectivity for remote monitoring, support for parallel operation, and compatibility with different battery types.
The inverter is available in various power ratings and voltage configurations, including 11KW 48V, 6.2KW 48V, 4KW 24V, 3.2KW 24V, and 2.2KW 12V models.
2. Features
The EASUN MPPT Solar Inverter offers a range of advanced features for optimal performance:
- Pure sine wave output for sensitive electronics.
- Off-grid and hybrid operation capabilities.
- Built-in MPPT solar charge controller for maximum power point tracking.
- External WiFi device support for remote monitoring via APP.
- Communication ports with BMS (RS485, CAN) for advanced battery management.
- Configurable AC/Solar charger priority via LCD control panel.
- Configurable battery charging current based on application needs via LCD control panel.
- Compatible with utility mains or generator power.
- Automatic restart while AC is recovering.
- Comprehensive protection against overload, over temperature, and short circuit.
- Smart battery charger design for optimized battery performance.
- Cold start function.
- Support for single-phase, three-phase mode, and grid connection mode.
- Support for lithium battery charging and discharging management.
- Parallel function: Supports up to 6 units for increased capacity (e.g., 11KW model) or up to 12 units (e.g., 6.2KW model).
3. Specifications
Below are the detailed specifications for the iSolar SMF-II-11KP-48V-WiFi model. Specifications may vary slightly between different models in the series.
| Category | Parameter | Value |
|---|---|---|
| PV Array Input | Max. PV Array Power | 11000W |
| Max. PV Array Open Circuit Voltage | 500VDC | |
| MPPT Range & Operating Voltage | 120-450VDC | |
| Max. Charge Current | 120A | |
| Grid Output (AC) | Nominal Output Power | 11000W |
| Nominal Output Voltage | 220/230/240VAC | |
| Output Voltage Range | 184-265VAC | |
| Nominal Output Current | 25.5A/24.3A/23.3A | |
| Off Grid, Hybrid Operation | Grid Input Voltage | 120-280VAC |
| Frequency | 50/60 Hz (Auto sensing) | |
| Battery Mode Output (AC) | Nominal Output Voltage | 220/230/240VAC |
| Output Wave Form | Pure Sine Wave | |
| Battery & Charger | Nominal DC Voltage | 48VDC |
| Max. Solar Charge Current | 120A | |
| Max. AC Charge Current | 120A | |
| Emergency Output Power | Max. Output Power | 11000W |
| Surge Power | 22000VA | |
| Automatic Transfer Time | <8ms | |
| Interface | Parallel Function | YES (Up to 6 units) |
| Communication | USB, RS485, RS232, CAN | |
| Environment & Physical | Relative Humidity | 0-90% RH (No Condensing) |
| Operating Temperature | 0°C to 50°C | |
| Dimensions (W*H*D) | 490mm * 580mm * 139mm |
4. Setup
4.1. Mounting the Unit
Consider the following points before selecting where to install your inverter:
- Do not mount the inverter on flammable construction materials.
- Mount on a solid surface.
- Install this inverter at eye level in order to allow the LCD display to be read at all times.
- The ambient temperature should be between 0°C and 50°C to ensure optimal operation.
- The recommended installation position is to be adhered to the wall vertically.
- Be sure to keep other objects and surfaces as shown in the right diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.
WARNING: SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.
4.2. System Diagram
The inverter supports both operation with and without a connected battery bank. Ensure all connections are made securely and according to local electrical codes.
4.3. PV Connection
When selecting proper PV modules, please be sure to consider the following parameters:
- Open circuit Voltage (Voc) of PV modules must not exceed the maximum PV array open circuit voltage of the inverter (e.g., 500VDC for 11KP model).
- Open circuit Voltage (Voc) of PV modules should be higher than the minimum battery voltage.
4.4. Battery Connection
The 11KP model supports a 48VDC battery system. Ensure correct polarity when connecting batteries.
The inverter is compatible with various battery types, including AGM, GEL, FLD, LI (Lithium), SLD, and user-defined settings. It can also operate without batteries.
4.5. Port Identification
Familiarize yourself with the input and output ports on the inverter's rear panel:
- AC Output
- AC Input
- PV1 Input
- PV2 Input
- RS232/RS485 Communication Port
- Dry Contact
- Current Sharing Port (for parallel operation)
- Parallel Communication Port (for parallel operation)
- Battery Input
- Power On/Off Switch
- LCD Display
- Status Indicator
- Charging Indicator
- Fault Indicator
- Function Buttons
- USB Communication Port
5. Operating Instructions
5.1. LCD Display and Indicators
The inverter features an LCD display and LED indicators to provide real-time status information:
| LED Indicator | State | Message |
|---|---|---|
| AC / INV (Green) | Solid On | Output is powered by utility in Line mode. |
| Flashing | Output is powered by battery or PV in battery mode. | |
| CHG (Green) | Solid On | Battery is fully charged. |
| Flashing | Battery is charging. | |
| FAULT (Red) | Solid On | Fault occurs in the inverter. |
| Flashing | Warning condition occurs in the inverter. |
5.2. Function Buttons
The inverter's function buttons allow you to navigate menus and configure settings:
| Function Key | Description |
|---|---|
| ESC | To exit setting mode. |
| UP | To go to previous selection. |
| DOWN | To go to next selection. |
| ENTER | To confirm the selection in setting mode or enter setting mode. |
5.3. Configuration
The inverter allows for various configurable settings via the LCD control panel, including AC/Solar charger priority and battery charging current. Refer to the detailed menu structure in the full product manual for specific navigation and adjustment procedures.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your EASUN MPPT Solar Inverter:
- Keep the inverter clean and free from dust and debris. Ensure ventilation openings are not blocked.
- Periodically check all electrical connections for tightness and signs of corrosion.
- Inspect cables for any damage or wear.
- Monitor the LCD display for any warning or fault messages and address them promptly.
- Ensure the ambient temperature remains within the specified operating range (0°C to 50°C).
7. Troubleshooting
If you encounter issues with your inverter, refer to the LED indicators and LCD display for initial diagnostics. Common issues and general troubleshooting steps include:
- No Power Output: Check input power sources (solar, utility, battery), ensure the power switch is ON, and verify all connections.
- Fault Indicator On: Refer to the specific fault code displayed on the LCD (if available) and consult the comprehensive troubleshooting guide in the full product manual. Common faults include overload, over temperature, or short circuit.
- Battery Not Charging: Verify PV input, AC input (if applicable), and battery connections. Check charging current settings.
- Inverter Overheating: Ensure adequate ventilation and clear any obstructions around the inverter. Reduce load if necessary.
For complex issues or persistent problems, contact qualified technical support.
8. Warranty and Support
For detailed warranty information, please refer to the warranty card included with your product or contact EASUN POWER customer service. Technical support is available to assist with installation, operation, and troubleshooting queries.
