1. Introduction
Thank you for choosing the EASUN POWER MPPT Solar Charger Controller. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your solar charge controller. Please read this manual thoroughly before installation and use to ensure optimal performance and longevity of your system.
2. Safety Information
Please observe the following safety precautions during installation and operation:
- Ensure all wiring is correctly polarized and securely connected to prevent damage to the controller and other components.
- Always disconnect the solar panel and battery power before installing or adjusting the controller.
- Avoid short-circuiting the battery terminals or solar panel terminals.
- Install the controller in a well-ventilated area, away from flammable materials and direct sunlight.
- Do not attempt to disassemble or repair the controller yourself. Contact qualified personnel for service.
- Wear appropriate personal protective equipment (PPE) when working with electrical systems.
3. Product Overview
The EASUN POWER MPPT Solar Charger Controller is designed to efficiently manage power flow from your solar panels to your battery bank. It features Maximum Power Point Tracking (MPPT) technology for enhanced charging efficiency, automatic 12V/24V system voltage detection, and an LCD display for monitoring and configuration.
Key Features:
- 20-40A MPPT solar charge controller
- MPPT technology for high efficiency
- Automatic battery voltage detection (12V/24V)
- LCD display for real-time monitoring and settings
- Overcharge protection
- Over-temperature protection
- Suitable for various battery types: sealed lead-acid, vented gel, and lithium batteries
- Easy to mount
Internal Structure:
4. Specifications
The following table details the technical specifications for the 20A, 30A, and 40A models of the MPPT Solar Charger Controller:
| Parameter | 20A Model | 30A Model | 40A Model |
|---|---|---|---|
| Rated Charge Current | 20A | 30A | 40A |
| Solar Panel Input Range (12V) | 16.8V-60V | 16.8V-75V | 16.8V-100V |
| Solar Panel Input Range (24V) | 33.6V-60V | 33.6V-75V | 33.6V-100V |
| System Rated Voltage | 12/24V Auto recognized | ||
| Maximum Battery Voltage | 8V-32V | ||
| Maximum Input Power (12V) | 260W | 390W | 520W |
| Maximum Input Power (24V) | 520W | 780W | 1040W |
| Rated Discharge Current | 20A | 20A | 30A |
| Battery Type | User default, Sealed, Flooded, GEL, LiFePO4, Li(NiCoMn)O2. | ||
| Equalized Charging Voltage (Maintenance-free lead-acid) | 14.6V (Duration: 2 hours) | ||
| Equalized Charging Voltage (Flooded lead-acid) | 14.8V | ||
| Absorption Charging Voltage (Maintenance-free lead-acid) | 14.4V (Duration: 2 hours) | ||
| Absorption Charging Voltage (GEL) | 14.2V | ||
| Absorption Charging Voltage (Flooded lead-acid) | 14.6V | ||
| Float Charging Voltage (Maintenance-free lead-acid, GEL, Flooded) | 13.8V | ||
| LVR (Low Voltage Recovery) | 12.6V | ||
| LVD (Low Voltage Disconnect) | 10.8V | ||
| Static Loss | ≤50mA | ||
| HVD (High Voltage Disconnect) | Lead acid battery 16V | ||
| Light Control Voltage | 5V/10V | ||
| Temperature Compensation Coefficient | -4mV/°C/2V (25°C) | ||
| Discharge Loop Voltage Drop | -20°C ~ +70°C | ||
| Operating Temperature | -20°C ~ +55°C | ||
| Storage Temperature | -30°C ~ +80°C | ||
| Working Humidity | ≤90%, No condensation | ||
| Protection Class | IP30 | ||
| Grounded Type | Positive grounded | ||
| Aperture for Installation | 5mm | ||
Product Dimensions:
| Model | Dimensions |
|---|---|
| ICharger MPPT 2420 | 178*124*48mm |
| ICharger MPPT 2430 | 178*124*48mm |
| ICharger MPPT 2440 | 218*148*67mm |
5. Setup and Installation
Wiring Diagram:
Follow the wiring diagram carefully to ensure correct and safe installation of your solar charging system. Ensure all connections are tight and secure.
Wiring Precautions and Steps:
Perform the following steps to connect cables and install them:
- Step 1: Connect batteries. Ensure correct polarity.
- Step 2: Connect the load. Connect your DC loads to the controller's load terminals.
- Step 3: Connect the solar panels. Connect the PV array to the controller's solar input terminals.
- Step 4: Connect the inverter to the battery. (You can ignore this step if no inverter is used).
Important: Always connect the battery first, then the solar panels, and finally the load. When disconnecting, reverse the order: disconnect load, then solar panels, then battery.
6. Operation
LCD Screen Status Introduction:
The LCD screen provides real-time information about your solar system. Refer to the icons and their meanings below:
| Item | Icon | Status |
|---|---|---|
| PV array | ☀️ / 🌙 | Day / Night |
| PV array charging | ☀️ → MPPT → 🔋 | Charging |
| Battery | 🔋 | Uncharged / Battery capacity |
| Battery Type | LiPo / LiFe | Battery type (Lithium Polymer / Lithium Iron Phosphate) |
| Load | 💡 / 🚫💡 | Load on / Load off |
Button Introduction:
The controller has two buttons: MENU (up arrow) and SET (down arrow). These buttons are used for navigation and parameter adjustment.
| Button | Button Pattern | Button Function |
|---|---|---|
| MENU | ▲ | Short press to switch down. Press and hold for 3 seconds to enter the next interface. |
| SET | ▼ | Short press to switch up. Press and hold for 3 seconds to exit without saving. |
Boot Screen:
When the system is powered on, the LCD will display the starting interface, then battery voltage, and finally the software revision.
- Starting interface: Normal LCD detection.
- Battery voltage interface: Displays current battery voltage.
- Software revision: Shows the firmware version.
Notice: At the first interface, long press the "MENU" button to enter the secondary interface. It will automatically switch back to the first interface without doing anything for 15 seconds.
System Voltage Setting:
The controller automatically recognizes 12V or 24V systems. To manually set or confirm:
After entering setting pages, switch to the system voltage page. Long press "MENU" for 3 seconds until "Auto" starts to flash. Then short press "MENU" or "SET" to turn the system voltage to 12V or 24V.
Battery Type Setting:
It is crucial to set the correct battery type for proper charging and battery longevity.
Under the main page, long press "MENU" for 3 seconds to enter the setting page, then short press "MENU" or "SET" to switch to the battery type page (user mode 1).
After entering the battery type page (user mode 1), long press "MENU" for 3 seconds to enter battery type selection pages. Short press "MENU" or "SET" to switch among Gel battery, Sealed battery, Flooded battery, and Lithium batteries.
Under each lithium battery page, long press "MENU" for 3 seconds to enter a program of setting lithium battery's capacity. At this time, the parameters on the screen will start flashing. Keep long pressing "MENU" for 3 seconds, the parameter will become battery capacity. Short press "MENU" or "SET" to set the capacity of the currently connected lithium batteries. After setting the parameters, save the data. Long press "MENU" for 3 seconds to save.
Load Switch On/Off:
3.5.1 Short pressing "SET" button to switch on/off the load.
3.5.2 Setting: Long press "MENU" for 3 seconds to save. Long press "SET" for 3 seconds to switch to the main page without saving settings.
Main Loop Pages:
After the controller is powered on, the LCD screen will enter the main page. At this page, short press "MENU" or "SET" to switch among the main loop pages:
- Main page (displays battery voltage)
- Battery temperature
- Charging current
- Discharging current
- Accumulated charging AH
- Accumulated discharging AH
Setting Pages:
Under the main page, long press "MENU" for 3 seconds to enter the setting page, and then short press "MENU" or "SET" to switch among the setting pages. These pages allow you to adjust various charging parameters:
- Resume charge
- Constant voltage (CV)
- Equalization charge
- Absorption charge
- System voltage
- Battery type
- Low voltage recovery
- Low voltage protection
- Float charge
- Temperature compensation
- Load working mode
- Communication serial number
7. Maintenance
To ensure optimal performance and extend the lifespan of your MPPT solar charge controller, regular maintenance is recommended:
- Cleanliness: Keep the controller clean and free from dust and debris. Use a dry cloth to wipe the exterior.
- Connections: Periodically check all wiring connections for tightness and corrosion. Loose connections can lead to power loss or overheating.
- Ventilation: Ensure the installation area remains well-ventilated to prevent overheating of the controller.
- Battery Health: Monitor your battery's health and ensure it is compatible with the controller's settings.
- Firmware: Check for any available firmware updates from the manufacturer, if applicable.
8. Troubleshooting
If you encounter issues with your solar charge controller, refer to the following common problems and solutions:
- No Display/Power: Check battery connections and ensure the battery voltage is within the controller's operating range (8V-32V). Verify solar panel connections.
- Battery Not Charging: Ensure solar panels are receiving adequate sunlight. Check solar panel voltage and current. Verify battery type settings are correct.
- Overheating: Ensure the controller is installed in a well-ventilated area. Check for obstructions around the heatsink. Reduce load if consistently overheating.
- Incorrect Voltage Readings: Verify all connections are secure. Ensure the temperature sensor (if used) is properly connected and placed.
- Load Not Working: Check load connections and ensure the load is not exceeding the controller's rated discharge current. Verify load switch setting.
For persistent issues, consult a qualified technician or contact customer support.
9. User Tips
- Proper Sizing: Ensure your solar panel array and battery bank are appropriately sized for your controller's capacity (e.g., 40A controller for up to 1040W at 24V).
- Battery Compatibility: Always select the correct battery type in the controller settings to prevent overcharging or undercharging, which can damage your batteries.
- Ventilation is Key: Many users emphasize the importance of good ventilation, especially for higher current models, to prevent the unit from getting too hot.
- Monitor Performance: Regularly check the LCD display for charging status, battery voltage, and current to ensure your system is operating efficiently.
10. Warranty and Support
This product comes with a standard manufacturer's warranty. Please retain your proof of purchase for any warranty claims. For technical support or service inquiries, please contact your retailer or the EASUN POWER customer service department.
