1. Overview
The EPEVER XTRA series (10A~40A) are advanced Maximum Power Point Tracking (MPPT) charge controllers designed for off-grid photovoltaic systems. These controllers offer optional display units (XDB1/XDS1/XDS2) and are built to international standards, ensuring high quality, reliability, and safety. Key features include a limitation function for charging power and current, as well as an automatic power reduction function. These ensure stability when operating with oversized PV modules (up to 1.5 times the rated power) and in high-temperature environments.
Image: EPEVER XTRA-N Series Overview highlighting key features and applications.
2. Features
- MPPT tracking efficiency above 99.5%.
- Maximum charge conversion efficiency as high as 97.4%.
- Supports lead-acid (Sealed, Gel, Flooded) and lithium-ion (LiFePO4, Li(NiCoMN)O2) batteries, as well as user-defined battery types.
- Multiple load work modes for versatile application.
- High-temperature charging power derating function to protect the unit.
- Optional LCD display units (XDB1/XDS1/XDS2) and various accessories available.
- Isolated RS485 communication port with standard Modbus protocol for monitoring and control.
- Real-time energy statistics function.
- IP33 protection class design for environmental resistance.
- CE certification (LVD IEC62109, EMC EN3/1-6-61000) ensures compliance with safety and electromagnetic compatibility standards.
3. Product Components
The EPEVER XTRA series controller features a clear layout for easy installation and operation. Refer to the diagram below for an identification of its main components and terminals.
Figure 1: Product Characteristics and Component Identification
| No. | Component | Description |
|---|---|---|
| 1 | RTS* port | Remote Temperature Sensor port |
| 2 | PV Terminals | Input terminals for Solar PV array |
| 3 | Battery Terminals | Terminals for battery connection |
| 4 | Load Terminals | Output terminals for DC load |
| 5 | RS485 communication port | Communication interface (RJ45) |
| 6 | Terminal protection cover | Cover for wiring terminals |
| 7 | Display units | LCD display for status and settings |
| 8 | Mounting Hole Φ5mm | Mounting points for installation |
*Note: If the temperature sensor is short-circuited or damaged, the controller will charge or discharge according to the voltage setting point at the default temperature setting of 25°C (no temperature compensation).
4. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your solar charge controller. Please follow these guidelines:
4.1 Safety Precautions
- Ensure all power sources (PV array, battery) are disconnected before installation or wiring.
- Use appropriate tools and wear protective gear.
- Install the controller in a well-ventilated area, away from direct sunlight, high temperatures, and moisture.
- Ensure sufficient clearance around the controller for heat dissipation.
- The controller should be mounted vertically on a non-flammable surface.
4.2 Mounting
Mount the controller using the Φ5mm mounting holes (8) on a vertical surface. Ensure adequate airflow around the unit to prevent overheating, especially in high-temperature environments.
4.3 Wiring Connection Order
Follow the connection order strictly to prevent damage to the controller or other components:
- Connect the Battery: Connect the battery to the Battery Terminals (3) on the controller. Ensure correct polarity (+ to + and - to -). The controller will detect the system voltage.
- Connect the PV Array: Connect the solar PV array to the PV Terminals (2). Ensure correct polarity. The controller will begin charging if sufficient solar power is available.
- Connect the DC Load: Connect the DC load to the Load Terminals (4). Ensure correct polarity.
- Connect Optional Accessories: If using, connect the Remote Temperature Sensor (RTS) to the RTS port (1) and communication accessories (e.g., MT50, eBox-WIFI-01, eBox-BLE-01, eLOG01) to the RS485 communication port (5).
Warning: Reverse connection of the battery or PV array may cause damage to the controller.
5. Wiring Diagram
The following diagram illustrates the typical system connections for the EPEVER XTRA series MPPT solar charge controller, including optional communication accessories.
Image: Comprehensive System Connection Diagram for EPEVER XTRA series, detailing connections for PV, battery, load, RTS, and various communication modules (MT50, eBox-WIFI-01, eBox-BLE-01, eLOG01) for mobile app and PC monitoring.
- PV Input: Connects to your solar panel array.
- Battery Connection: Connects to your battery bank.
- Load Output: Connects to your DC loads.
- RTS (Remote Temperature Sensor): Connects to the RTS port for accurate battery temperature compensation.
- Communication Ports (RS485): Used for connecting external devices such as:
- MT50: Remote meter for monitoring and parameter setting.
- eBox-WIFI-01 / eBox-BLE-01: Modules for wireless communication with mobile apps.
- eLOG01: Data logger for storing system data.
- PC Connection: Via RS485 to USB adapter for PC monitoring software.
6. Operating Instructions
The XTRA series controller features an intuitive LCD display and buttons for monitoring and configuration.
6.1 LCD Display and Buttons
The display units (7) provide real-time system information. The buttons allow navigation through menus and adjustment of settings:
- PV/+ Button: Used to scroll up or increase values.
- BATT/+ Button: Used to scroll up or increase values.
- LOAD/- Button: Used to scroll down or decrease values.
- SET Button: Enters menu, confirms selection, or saves settings.
- ESC Button: Exits menu or cancels operation.
6.2 Basic Operation
- View Parameters: Press the PV/+, BATT/+, or LOAD/- buttons to cycle through various system parameters displayed on the LCD.
- Enter Setting Mode: Press and hold the SET button for a few seconds to enter the parameter setting menu.
- Adjust Settings: Use the PV/+, BATT/+, or LOAD/- buttons to change values. Press SET to confirm and move to the next parameter or save.
- Exit Setting Mode: Press the ESC button to exit the setting menu without saving changes, or repeatedly press SET until the main display returns.
7. Battery Type Settings
The controller supports various battery types. It is crucial to select the correct battery type for optimal charging and battery longevity.
- Supported Types: Lead-acid (Sealed, Gel, Flooded) and Lithium (LiFePO4, Li(NiCoMN)O2). A 'User' option is also available for custom settings.
- Lithium Battery Note: When using lithium batteries, the system voltage cannot be automatically identified. You must manually set the nominal system voltage.
- Temperature Compensation: For lithium batteries, the temperature compensation coefficient is 0 and cannot be set. For lead-acid batteries, parameters are typically 12V system at 25°C, x2 in 24V system, x3 in 36V system, and x4 in 48V system.
Refer to the controller's menu or the detailed specifications for adjusting battery parameters according to your specific battery manufacturer's recommendations.
8. Load Work Modes
The controller offers multiple load work modes to manage the DC load output. These modes typically include:
- Manual Control: Load can be turned on/off manually via the controller buttons or remote meter.
- Light Control: Load turns on automatically at dusk and off at dawn.
- Light Control + Timer: Load turns on at dusk and stays on for a set duration.
- Dual-Timer Control: Load turns on for two separate timed periods.
- Pure Controller Mode: Load output is always on (if battery voltage is sufficient).
Specific settings for each mode can be accessed and adjusted through the controller's display menu or via connected communication accessories.
9. Maintenance
Regular maintenance ensures the longevity and optimal performance of your EPEVER XTRA series solar charge controller.
- Check Connections: Periodically inspect all wiring connections for tightness and corrosion. Loose connections can cause overheating and power loss.
- Clean the Controller: Keep the controller clean and free from dust and debris. Ensure ventilation openings are not blocked. Use a dry cloth for cleaning.
- Inspect for Damage: Check for any physical damage to the casing, cables, or terminals.
- Verify Operation: Monitor the LCD display regularly to ensure the controller is operating correctly and charging the battery as expected.
- Battery Health: Ensure your batteries are well-maintained according to their manufacturer's guidelines.
Caution: Disconnect all power sources (PV and battery) before performing any maintenance or cleaning.
10. Troubleshooting
This section provides guidance for common issues you might encounter with your solar charge controller. For more complex problems, please contact technical support.
10.1 Common Issues and Solutions
- No Display/No Power:
- Check battery connections and ensure correct polarity.
- Verify battery voltage is within the controller's operating range.
- Check for blown fuses in the battery circuit.
- Battery Not Charging:
- Ensure PV array is connected correctly and receiving sunlight.
- Check PV input voltage and current. It should be higher than battery voltage.
- Verify PV array polarity.
- Check for shading on solar panels.
- Ensure battery type settings are correct.
- Load Not Working:
- Check load connections and polarity.
- Verify load work mode settings.
- Ensure battery voltage is above the low voltage disconnect (LVD) threshold.
- Check for overcurrent or short circuit on the load output.
- High Temperature Warning:
- Ensure the controller is installed in a well-ventilated area.
- Check for obstructions around the heatsink.
- Reduce PV input power if consistently overheating (though the controller has derating).
If the issue persists after checking these points, consult the full user manual (if available) or contact EPEVER technical support.
11. Specifications
Detailed electrical, mechanical, and environmental specifications for the EPEVER XTRA series MPPT solar charge controllers.
11.1 Electrical Specifications
Image: Electrical and Environmental Specifications for XTRA series controllers.
| Parameter | XTRA 3415N-XDS2 (30A) | XTRA 4415N-XDS2 (40A) |
|---|---|---|
| Nominal system voltage | 12/24/36/48VDC Auto | |
| Rated charge current | 30A | 40A |
| Rated discharge current | 30A | 40A |
| Battery voltage range | 8~68V | |
| Max. PV open circuit voltage | 150V (at minimum operating environment temperature) 138V (at 25℃ environment temperature) | |
| MPPT voltage range | Battery voltage +2V ~ 108V | |
| Max. PV input power (12V/24V/36V/48V) | 390/12, 780/24, 1040/24, 1560/48 | 520/12, 1040/24, 1380/48, 1920/48 |
| Equalization voltage | Sealed: 14.6V, Flooded: 14.8V, User: 9-17V | |
| Boost voltage | Sealed: 14.4V, Gel: 14.2V, Flooded: 14.6V, User: 9-17V | |
| Float voltage | Sealed/Gel/Flooded: 13.8V, User: 9-17V | |
| Low voltage reconnect voltage | Gel/Sealed/Flooded: 12.6V, User: 9-17V | |
| Low voltage disconnect voltage | Gel/Sealed/Flooded: 11.1V, User: 9-17V | |
| Self-consumption | ≤35mA(12V), ≤22mA(24V) | ≤35mA(12V), ≤22mA(24V), ≤16mA(36V), ≤16mA(48V) |
| Discharge circuit voltage drop | ≤0.23V | |
| Temperature Compensate coefficient | -3mV/℃/2V (Default) | |
| Grounding | Common negative grounding | |
| RS485 interface | 5VDC/200mA (RJ45) | |
| LCD backlight time | 60S (Default) | |
11.2 Mechanical Specifications
Image: Mechanical Specifications for XTRA series controllers.
| Parameter | XTRA 3415N-XDS2 (30A) | XTRA 4415N-XDS2 (40A) |
|---|---|---|
| Dimension (mm) | 255×187×75.7 | 255×189×83.2 |
| Mounting dimension (mm) | 200×178 | 200×180 |
| Mounting hole size | Φ5mm | |
| Terminal | 6AWG (16mm²) | |
| Recommended cable | 10AWG (6mm²) | 8AWG (10mm²) |
| Weight | 2.07kg | 2.47kg |
11.3 Environmental Specifications
| Parameter | Value |
|---|---|
| Working environment temperature | -25℃~+45℃ (LCD); -30℃~+60℃ (No LCD) |
| Storage temp. range | -20℃~+70℃ |
| Relative humidity | ≤95%, N.C. |
| Enclosure | IP33 |
| Pollution degree | PD2 |
12. User Tips
Based on general user experiences with solar charge controllers, here are some tips for optimizing your system:
- Match Components: Ensure your PV array voltage and current, battery voltage, and load requirements are well-matched to the controller's specifications to prevent damage and ensure efficiency.
- Proper Cable Sizing: Use recommended cable gauges for all connections (PV, battery, load) to minimize voltage drop and maximize efficiency.
- Remote Monitoring: Consider using optional accessories like the MT50 remote meter or eBox modules for convenient monitoring and parameter adjustment, especially if the controller is installed in a hard-to-reach location.
- Grounding: Always ensure proper grounding of the system for safety. The XTRA series uses common negative grounding.
- Temperature Sensor: Always connect the remote temperature sensor (RTS) if possible, especially for lead-acid batteries, to ensure accurate temperature compensation and prolong battery life.
(No specific user tips from reviews or Q&A were provided for this product.)
13. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official EPEVER website or contact your authorized dealer. Keep your purchase receipt and product serial number handy when seeking support.
EPEVER products are designed for reliability and performance. Should you encounter any issues, detailed troubleshooting guides and FAQs are often available on the manufacturer's support pages.
