Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your EVGATSAUTO 12V/24V 30A MPPT Solar Controller. Please read this manual thoroughly before using the product to ensure proper function and safety.
Safety Instructions
- Ensure all connections are correct and secure before powering on the system.
- Do not attempt to repair or modify the controller yourself. Contact qualified personnel for service.
- Install the controller in a well-ventilated area, away from flammable materials and direct sunlight.
- Avoid contact with water or other liquids. The controller has an IP32 waterproof rating, meaning it is protected against solid objects over 2.5mm and spraying water.
- Always connect the battery first, then the solar panel, and finally the load. Disconnect in the reverse order.
- Use appropriate wire gauges for all connections to prevent overheating.
Product Overview
The EVGATSAUTO Solar Controller is designed to manage the power flow from your solar panel to your battery and load. It features an intelligent MPPT 3-stage charging mode for efficient battery charging and a humanized LCD display for easy monitoring and control.
Key Features:
- Automatic identification of 12V/24V system voltage.
- High efficiency intelligent MPPT 3-stage charging mode.
- Humanized LCD display and double button interface for easy operation.
- Dual USB output (2.4A *2) for charging external devices.
- Multiple protection functions: over voltage, short circuit, over load, overcharge, over-discharge.
- Accurate temperature compensation for optimized charging and discharging voltage.
- Working storage function: records total run time, error timers, and full charge times.
- Load control mode selection and timer function for street light applications.
Figure 1: EVGATSAUTO Solar Controller in a solar power system context.
Figure 2: Front view of the EVGATSAUTO Solar Controller.
Specifications
| Current | 30A |
| Rated Voltage | 12V/24V (Auto Recognition) |
| USB Output | 2.4A * 2 |
| Over Current (V) | 13.7V (for 12V system) / 27.4V (for 24V system) |
| Over Discharge Current (V) | 10.5-11V (for 12V system) / 21-22V (for 24V system) |
| Temperature Compensation | -3mv/℃/cell |
| Empty Load Wastage | <45mA |
| Loop Voltage Drop | <200mv |
| Display | LCD Display |
| Charging Type | MPPT |
| Waterproof Grade | IP32 |
| Material | Plastic |
| Color | Black + Orange |
| Product Dimensions (30A) | 17.5 x 14 x 4 cm (6.9 x 5.5 x 1.6 inches) |
| Item Weight | 1.04 pounds |
| Manufacturer | EVGATSAUTO |
Figure 3: Product dimensions for the 30A model.
Setup Instructions
Follow these steps to correctly connect your solar controller to the solar panel, battery, and load. Ensure all power sources are disconnected before making any connections.
- Connect the Battery: Connect the battery to the controller's battery terminals (marked with a battery symbol). Ensure correct polarity (+ to + and - to -). The controller will automatically detect the system voltage (12V or 24V).
- Connect the Solar Panel: Connect the solar panel to the controller's solar panel terminals (marked with a solar panel symbol). Ensure correct polarity.
- Connect the Load: Connect the DC load to the controller's load terminals (marked with a light bulb symbol). Ensure correct polarity.
Important: Always connect the battery first, then the solar panel, and finally the load. Disconnect in the reverse order: load first, then solar panel, then battery.
Figure 4: Controller Connection Method Diagram.
Operating Instructions
LCD Display and Buttons:
The controller features an LCD display that shows real-time system status and parameters. Two buttons are used for navigation and setting adjustments.
Figure 5: LCD Display and Control Buttons.
Charging Modes:
The controller utilizes an intelligent MPPT 3-stage charging mode to optimize battery life and performance:
- Bulk Charge: Rapid charging to bring the battery to approximately 80% capacity.
- Absorption Charge: Charging at a constant voltage to bring the battery to 100% capacity.
- Float Charge: Maintaining the battery at full charge with a lower voltage to compensate for self-discharge.
USB Output:
The controller includes dual USB ports (2.4A max each) for charging compatible devices such as mobile phones, driving recorders, cameras, and tablets.
Figure 6: Dual USB Output Functionality.
Maintenance
To ensure optimal performance and longevity of your solar controller, perform the following maintenance checks periodically:
- Cleanliness: Keep the controller clean and free from dust and debris. Use a dry cloth for cleaning.
- Connections: Periodically check all wiring connections for tightness and corrosion. Loose connections can cause voltage drops and 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 properly maintained according to the battery manufacturer's guidelines.
Troubleshooting
If you encounter issues with your solar controller, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No display on LCD | Battery not connected or low voltage; reversed polarity. | Check battery connections and voltage. Ensure correct polarity. |
| Battery not charging | Solar panel not connected or insufficient sunlight; reversed polarity; faulty solar panel. | Check solar panel connections and ensure adequate sunlight. Verify polarity. Test solar panel output. |
| Load not working | Load not connected or reversed polarity; battery low; load overcurrent protection activated. | Check load connections and polarity. Ensure battery is sufficiently charged. Reduce load or check for short circuits. |
| Controller overheating | Poor ventilation; excessive load. | Ensure adequate airflow around the controller. Reduce connected load if possible. |
If the problem persists after attempting these solutions, please contact customer support.
Warranty and Support
This product comes with a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact the seller directly.
For technical support, troubleshooting assistance, or any questions regarding your EVGATSAUTO Solar Controller, please contact EVGATSAUTO customer service through the retailer where the product was purchased.
You can also visit the EVGATSAUTO Store on Amazon for more information and contact options.