1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your SRNE HC Series PWM Solar Charge Controller. These controllers are designed for solar power systems, offering efficient charge management for various battery types and flexible load control.
Key Features
- 32-bit high-speed master control chip.
- Large-screen LCD for display, charge and discharge parameters adjustable, allowing selection of multiple battery types, with flexibility to set the load to work during the day or night.
- Complete multi-stage PWM charge management.
- Built-in reverse connection protection, open-circuit protection, high temperature protection, over-current/short-circuit protection (optional), which are all self-recovery type, with no damage to the controller.
- Double MOS anti-backflow circuit, ultra-low heat generation.
- Lithium battery activation available.
- Dual USB output, maximum current up to 2A, supporting high current charging of mobile phones and other devices.
2. Safety Information
Please read all instructions carefully before installation and operation to ensure safe and efficient use of the solar charge controller.
- Ensure correct polarity when connecting wires to avoid damage to the controller and other components.
- Do not attempt to repair or modify the controller yourself. Refer to qualified personnel for service.
- Install the controller in a well-ventilated area, away from flammable materials and direct sunlight.
- Ensure all connections are tight to prevent loose connections, which can lead to overheating and potential fire hazards.
- Wear appropriate personal protective equipment (PPE) during installation, especially when working with electrical components.
- Keep the controller away from water and moisture.
3. Installation
3.1 Physical Installation
The controller should be installed firmly in a suitable location. Ensure there is adequate space for ventilation and access to terminals. Refer to the dimensions below for mounting:
- HC2410 outline dimension: 120 × 75 × 34 mm
- HC2410 mounting dimensions: 108.5 × 57.5 mm
- HC2420 outline dimension: 134 × 85 × 36 mm
- HC2420 mounting dimensions: 121 × 70 mm
- Mounting hole diameter: 3.5 mm
3.2 Electrical Wiring Diagrams
IMPORTANT: Strictly follow the connection sequence to prevent damage to the controller. Disassembly should be done in the reverse order of wiring.
- Connect the anode (+) and cathode (-) of the battery to the controller. Ensure correct polarity to avoid reverse connection.
- Connect the anode (+) and cathode (-) of the load to the controller. Ensure correct polarity to avoid reverse connection.
- Connect the solar panel to the controller. Ensure correct polarity to avoid reverse connection.
4. Operation
4.1 System Voltage
The controller automatically detects 12V or 24V system voltage upon initial connection to the battery.
4.2 Battery Type Selection
The controller allows selection of multiple battery types (Lead-Acid, GEL, FLD, Ternary Lithium, Lithium Iron Phosphate). Refer to the specifications table for adjustable parameters. Lithium battery activation is available.
4.3 Load Operating Modes
The controller supports various load operating modes, which can be set to control when the load works (day or night). These modes offer flexibility for different application needs.
4.4 USB Output
The dual USB output ports provide a maximum current of 2A for convenient charging of mobile phones, tablets, and other USB-powered devices.
5. Specifications
The following table details the general specifications for the SRNE HC Series PWM Solar Charge Controllers.
| Parameter | HC2410 | HC2420 | HC2430 | HC2440 | HC2460 |
|---|---|---|---|---|---|
| System voltage | 12V/24V | ||||
| Battery operating voltage range | 8-32V | ||||
| Rated Charge Current | 10A | 20A | 30A | 40A | 60A |
| Rated Load Current | 10A | 20A | 30A | 40A | 60A |
| Max. PV Input Voltage | 50V (enable protection and stop charging), below 45V (charge resumes) | ||||
| Charging mode | PWM charging (b04/b07 can be set to intermittent charging) | ||||
| USB output | 5V/2A | ||||
| Static power consumption | ≤10mA | ||||
| Operating temperature | -35℃ ~ +60℃ | ||||
| Altitude | ≤3000m | ||||
| IP rating | IP32 | ||||
| Product size | 120*75*34mm | 134*85*36mm | 159*100*39mm | N/A | N/A |
| Installation size | 108.5*57.5mm | 121*70mm | 147*80mm | N/A | N/A |
| Weight | 130g | 180g | 290g | N/A | N/A |
5.1 Charge and Discharge Parameters
| Parameter | b01(SLD) | b02(GEL) | b03(FLD) | b04 (Ternary lithium) | b07 (Lithium iron phosphate) |
|---|---|---|---|---|---|
| High voltage protection HVD | 16V | 16V | 16V | 16V | 16V |
| High voltage recovery HVR | 15V | 15V | 15V | 15V | 15V |
| Boost charge voltage | 14.4V | 14.2V | 14.6V | (12.5V) | (14.4V) |
| Equalizing charge voltage | 14.6V | 14.8V | |||
| Floating charge voltage | 13.8V | 13.8V | 13.8V | 12.5V | 14.4V |
| Boost charge return voltage | 13.2V | 13.2V | 13.2V | 12.0V | 13.2V |
| Over discharge recovery voltage | (12.6V) | (12.6V) | (12.6V) | (10.5V) | (12.6V) |
| Over discharge voltage | (11.1V) | (11.1V) | (11.1V) | (9.5V) | (11.1V) |
| Boost charge time | 2hrs | ||||
| Equalizing charge time | 2hrs | ||||
Notes on Parameters:
- The listed voltages correspond to a 12V system. If a 24V system is used, all voltage parameters should be multiplied by 2.
- Battery types b01-b03 (SLD, GEL, FLD) will enter equalizing charge when and only when Low Voltage Disconnect (LVD) occurs. After equalizing charge, the controller will transition directly into floating charge.
- Parameters identified with brackets "()" in the parameter table can be modified by pressing the controller's buttons; other parameters are fixed and cannot be modified.
6. Troubleshooting
- No Power/Display: Check battery connections and ensure the battery voltage is within the operating range. Verify the solar panel is connected and receiving sufficient sunlight.
- Battery Not Charging: Confirm solar panel connections are secure and correct. Check the solar panel's output voltage. Review the charging mode settings and ensure the correct battery type is selected in the controller's parameters.
- Load Not Working: Inspect load connections for proper wiring and tightness. Ensure the load operating mode is correctly set (e.g., not in '00H' if you expect the load to be continuously on). Check for activation of overcurrent or short-circuit protection.
- Controller Overheating: Ensure adequate ventilation around the controller. If consistently overheating, consider reducing the connected load or improving airflow.
- Incorrect Voltage Readings: Verify all wiring connections are secure and free from corrosion. Ensure the battery type setting matches your installed battery.
7. Maintenance
- Regularly inspect all wiring connections for tightness and corrosion. Tighten any loose connections.
- Keep the controller clean and free from dust, dirt, and debris. Use a dry cloth for cleaning.
- Ensure the installation area remains well-ventilated to prevent overheating.
- Periodically check battery voltage and health to ensure optimal system performance.
- Inspect the solar panels for any dirt or obstructions that might reduce their efficiency.
8. User Tips
No specific user tips were available from customer reviews or Q&A for this product at this time.
9. Warranty and Support
For detailed information regarding warranty terms, advanced troubleshooting, and further technical support, please refer to the official user manual PDF provided by SRNE.
You can access the full user manual (PDF) here.