1. Introduction and Overview
The EPEVER LandStar EU series controller, specifically the LS1024EU model, is an advanced Pulse Width Modulation (PWM) solar charge controller designed for off-grid solar panel battery charging systems. It features a USB output port for charging electronic devices and incorporates the latest digital techniques for efficient and reliable operation. This manual provides essential information for the proper installation, operation, and maintenance of your LS1024EU solar charge controller.
Figure 1: Front view of the EPEVER LS1024EU Solar Charge Controller, showing the LED indicators, USB port, and terminal connections.
2. Important Safety Information
Please read all instructions in this manual carefully before installation. Failure to follow these instructions may result in damage to the controller, battery, or other components, and may cause personal injury.
- DO NOT disassemble or attempt to repair the controller.
- Install external fuse or breaker as required for safety.
- Always disconnect the solar module and fuses/breakers near the battery before installing or moving the controller.
- Ensure power connections remain tight to prevent excessive heating from loose connections.
- Only charge batteries that comply with the parameters of the controller.
- Battery connection may be wired to a single battery or a bank of batteries.
- Risk of electric shock: The PV (photovoltaic) array and load can produce high voltages when the controller is operating.
3. Product Features and Components
The LS1024EU controller is equipped with several key features and components designed for optimal performance and user convenience.
- 3-Stage Intelligent PWM Charging: Bulk, Boost/Equalize, Float for efficient battery charging.
- Battery Type Support: Compatible with Sealed, Gel, and Flooded batteries.
- USB Output Port: 5VDC/1.2A output for charging electronic devices like mobile phones or powering DC fans.
- Intuitive LED Indicators: Provide clear status of battery voltage, charging, and load.
- Manual Load Control: Ability to manually control the output of the load.
- Temperature Compensation: Adjusts charging parameters based on battery temperature.
- Extensive Electronic Protections: Includes load overload, load short circuit, battery over discharge, and battery reverse polarity protection.
- Industrial Grade Design: Ensures durability and reliability.
Figure 2: Product Feature Diagram with Labeled Components.
| No. | Component | No. | Component |
|---|---|---|---|
| ① | Mounting Hole Φ4.5 | ⑥ | Button |
| ② | PV Terminals | ⑦ | Battery status LED indicator |
| ③ | Battery Terminals | ⑧ | Load status LED indicator |
| ④ | Load Terminals | ⑨ | Charging status LED indicator |
| ⑤ | USB Output Port |
4. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your solar charging system. Follow these steps carefully.
4.1 Wiring Sequence
- Connect the Battery: Connect the battery to the charge controller first. Ensure correct polarity (+ to + and - to -). The battery status LED indicator (⑦) should illuminate.
- Connect the Load: Connect the DC load to the charge controller. Ensure correct polarity.
- Connect the Solar Panel: Connect the solar panel (PV array) to the charge controller. Ensure correct polarity. The charging status LED indicator (⑨) should illuminate if there is sufficient solar input.
Important: Always connect the battery first and disconnect the solar panel first when disassembling the system. This sequence prevents damage to the controller.
4.2 Mounting
- Mount the controller vertically on a wall or other solid surface.
- Ensure adequate air circulation around the controller for heat dissipation.
- Avoid mounting in direct sunlight, high temperature, or humid environments.
- The mounting hole size is Φ4.5mm.
4.3 Terminal Connections
The LS1024EU controller uses 12AWG/4mm² terminals. Ensure all wire connections are tight to prevent voltage drops and overheating.
Figure 3: Typical System Connection Diagram for LS1024EU.
5. Operating Instructions
5.1 LED Indicators
- Charging Status LED (⑨): Indicates the charging status from the solar panel to the battery.
- Battery Status LED (⑦): Shows the current battery voltage level.
- Load Status LED (⑧): Indicates the status of the connected DC load (ON/OFF, Overload, Short-circuit).
5.2 Battery Type Selection
The controller supports Sealed, Gel, and Flooded battery types. It is crucial to select the correct battery type for optimal charging and battery longevity.
- Enter Setting Mode: Press and hold the button (⑥) for 5 seconds until the battery status LEDs (⑦) start flashing.
- Select Desired Mode: Press the button (⑥) repeatedly to cycle through the battery types (Sealed, Gel, Flooded). The flashing LEDs will indicate the selected type.
- Save Setting: The selected mode will be saved automatically if no operation is performed for 5 seconds, and the LEDs will stop flashing.
Figure 4: Battery Type Selection Process and Indicators.
5.3 Load Output Control
The load output can be manually controlled via the button (⑥). A short press of the button will toggle the load output ON or OFF.
5.4 USB Output
The USB output port (⑤) provides 5VDC/1.2A power, suitable for charging small electronic devices.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your EPEVER LS1024EU solar charge controller.
- Check Connections: Periodically inspect all wiring connections to ensure they are tight and free from corrosion. Loose connections can cause excessive heating and damage.
- Clean the Controller: Keep the controller clean and free from dust and debris. Use a dry cloth to wipe the surface. Do not use liquid cleaners.
- Inspect for Damage: Visually inspect the controller for any signs of physical damage, such as cracks or frayed wires.
- Ventilation: Ensure that the area around the controller remains well-ventilated to prevent overheating.
7. Troubleshooting
This section provides guidance for common issues you might encounter with your LS1024EU controller.
| Problem | Possible Cause | Solution |
|---|---|---|
| No LED indication | Battery not connected or reverse polarity; Battery voltage too low. | Check battery connections and polarity. Ensure battery voltage is above 8V. |
| Charging LED off during daylight | Solar panel not connected or reverse polarity; Insufficient sunlight; PV open circuit voltage too low. | Check PV connections and polarity. Ensure sufficient sunlight. Verify PV voltage. |
| Load not working | Load output OFF; Load short circuit; Load overload; Battery voltage too low (LVD). | Press button to turn load ON. Check load for short circuit. Reduce load. Charge battery. |
| USB output not working | No device connected; Device requires more than 1.2A; Controller fault. | Connect device. Check device current requirement. Contact support if issue persists. |
For issues not covered here, please refer to the detailed specifications or contact EPEVER customer support.
8. Technical Specifications
Below are the detailed technical specifications for the EPEVER LS1024EU solar charge controller.
Figure 5: Detailed Technical Specifications for LS Series Models.
| Parameter | Value (LS1024EU) |
|---|---|
| Nominal System Voltage | 12/24VDC Auto |
| Rated Charge Current | 10A |
| Rated Discharge Current | 10A |
| USB Output Port | 5VDC/1.2A |
| Battery Input Voltage Range | 8V～32V |
| Max. PV Open Circuit Voltage | 50V |
| Self-consumption | 12V≤5mA |
| Charge Circuit Voltage Drop | ≤0.13V |
| Discharge Circuit Voltage Drop | ≤0.17V |
| Temperature Compensation Coefficient | -5mV/℃/2V |
| Working Environment Temperature | -35℃ ～ +55℃ |
| Humidity | ≤95% N.C. |
| Enclosure | IP20 |
| Grounding | Common Positive |
| Overall Dimension | 120.3 x 67 x 21.8 mm |
| Mounting Dimension | 111.5mm |
| Mounting Hole Size | Φ4.5mm |
| Terminals | 12AWG/4mm² |
| Net Weight | 0.1kg |
9. Warranty and Support
EPEVER products are designed for reliability and performance. For any technical assistance or support, please refer to the following information.
- Technical Support: Free technical support is available from authorized sales agents like GolandCentury.
- Service Centers: GolandCentury has established service centers in key regions including Chicago (USA), Munich (Germany), Toronto (Canada), and Melbourne (Australia) to provide local support.
- Product Quality: EPEVER aims to provide high-quality products with consistent performance.
For specific warranty terms and conditions, please consult your purchase documentation or the official EPEVER website.