Suuonee Solar Charge Controller User Manual

1. Product Overview

The Suuonee Solar Controller is an advanced 40A PWM charge controller designed for 12V and 24V solar power systems. It features an intuitive LCD display for easy monitoring and control, and incorporates a 3-stage PWM charging system to optimize battery life. Built-in comprehensive protections ensure the safety and longevity of your solar setup.

Image 1.1: Front view of the Suuonee Solar Charge Controller.

2. Safety Precautions

• Ensure all connections are tight and correct polarity is observed to prevent damage to the controller or battery.
• 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.
• Keep the controller away from water and moisture.
• Use appropriate circuit breakers or fuses for all connections to protect against overcurrent.

3. Package Contents

Upon opening the package, please verify that all items are present and in good condition:

• 1 x PWM Solar Controller (40A)
• 1 x User Manual

4. Product Features

• Industrial Controller: Features a built-in industrial controller for efficient charging performance, ensuring optimal energy conversion in various weather conditions.
• Big LCD Display: Equipped with a large LCD display that clearly shows parameters for easy monitoring and control. You can effortlessly check battery status, charging mode, and other essential data.
• 3-Stage PWM Charging: Designed with a fully 3-stage PWM management system, this controller delivers a smarter and safer charging process for your batteries. It maximizes battery life by preventing overcharging and undercharging.
• Comprehensive Protection: Built-in short-circuit, open-circuit, reverse, and overload safeguards protect your solar power system from damage. The controller ensures stable operation and extends the lifespan of your batteries.
• MOSFET Design: Utilizes a MOSFET reverse current system which minimizes heat production while enhancing efficiency. This design ensures consistent performance and durability.

Image 4.1: Highlighting the 3-stage PWM charge management and LCD display.

5. Setup and Installation

Follow these steps for proper installation of your solar charge controller:

1. Mounting: Choose a dry, well-ventilated location, away from direct sunlight and heat sources. Ensure there is enough space around the controller for air circulation.
2. Connect Battery: Connect the battery to the charge controller first. Ensure correct polarity (+ to + and - to -). The controller will power on and display battery voltage.
3. Connect Solar Panel: Connect the solar panel to the charge controller. Again, ensure correct polarity. If sunlight is sufficient, the charging indicator will light up.
4. Connect Load: Connect the DC load to the charge controller. Ensure correct polarity. The load can be turned on or off via the controller settings.

Image 5.1: Wiring diagram and dimensions of the solar charge controller.

Important: Always connect the battery first and disconnect the battery last when performing any wiring changes.

6. Operating Instructions

6.1 LCD Display Overview

The LCD display provides real-time information about your solar system. Key indicators include:

• Battery Voltage: Displays the current battery voltage.
• Charging Status: Indicates if the battery is charging from the solar panel.
• Load Status: Shows if the DC load is active.
• Parameter Settings: Allows adjustment of various operational parameters.

Image 6.1: LCD display showing battery voltage and USB charging capability.

6.2 Parameter Setting

Use the three buttons below the LCD display to navigate and adjust settings:

• Left Button: Menu navigation / Decrease value.
• Middle Button: Enter / Confirm selection.
• Right Button: Menu navigation / Increase value.

Press the middle button to enter the setting mode. Use the left and right buttons to cycle through parameters such as:

• Battery Type
• Floating Charging Voltage (default 13.7V)
• Discharge Reconnect Voltage (default 12.6V)
• Discharge Stop Voltage (default 10.7V)
• Load Work Mode (e.g., 24H for continuous output)

Image 6.2: LCD display parameter setting flow.

6.3 USB Output

The controller includes 5V / 2A USB outputs for charging small electronic devices. Simply connect your device to the USB port on the controller.

6.4 Product Demonstration Video

7. Maintenance

To ensure optimal performance and longevity of your solar charge controller, follow these maintenance guidelines:

• Regularly inspect all wiring connections to ensure they are secure and free from corrosion.
• Keep the controller clean and free from dust, dirt, and debris. Use a soft, dry cloth for cleaning.
• Check for any signs of physical damage or overheating.
• Ensure the ventilation openings are not blocked to allow for proper heat dissipation.

8. Troubleshooting

If you encounter issues with your solar charge controller, refer to the following common problems and solutions:

9. Specifications

10. Warranty and Support

Warranty and support information for this product is not available in the provided documentation. Please refer to the product packaging or contact Suuonee customer service for details regarding warranty terms, technical support, and service options.