Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your SRNE SR-HP2430 or SR-HP2440 PWM Solar Charge Controller. Please read this manual thoroughly before using the product to ensure optimal performance and safety. This controller is designed to manage the power flow from your solar panel to your battery bank and DC loads, ensuring efficient charging and protection against various electrical faults.
Product Features
- 12V/24V system voltages are automatically recognized (except for HP4840/30 models).
- Charging program options are available for sealed, GEL, flooded lead-acid batteries, and lithium batteries.
- An upgraded 3-stage PWM charging algorithm is adopted. Equalizing charge to the battery periodically or when over-discharged effectively prevents non-equalization and sulfuration, extending battery service life (with the exception of GEL and lithium batteries).
- With temperature compensation employed, charging parameters are automatically adjusted (with the exception of lithium batteries).
- A wide range of load working modes facilitate the product's application to different types of street lights and monitoring devices.
- The product provides overcharge, over-discharge, overload, short-circuit, and reverse-connection protection.
- An advanced load starting method allows large-capacitance loads to be started smoothly.
- A range of parameter settings and power-down saving functions are available, requiring no repeated setting.
- The product features a dot matrix graphic LCD screen and a human-machine interface with 2 keys.
- The user-friendly design of browser and dynamic interfaces ensures convenient and intuitive operations.
- (Optional communication function) provides an RJ12 data port (output of TTL-232 level or Bluetooth signals), with data adopting the standard Modbus protocol, and can be used with upper computer monitoring software.
- Boasting an industrial-grade design, the product functions well in various tough conditions.
- TVS lighting protection is adopted.
Specifications
| Parameter | HP2430/2440 | Remarks |
|---|---|---|
| Rated Current | 30A/40A | |
| System voltage | Automatic recognition of 12V/24V | |
| No-load loss | < 13mA/12V; < 15mA/24V | |
| Max. Solar energy input voltage | <55V | |
| Max. voltage at the battery end | <34V | |
| Battery Type Parameters | ||
| Overvoltage protection | 16.0V | |
| Equalizing charging voltage (Flooded FLD) | 14.8V | |
| Equalizing charging voltage (Sealed SLD) | 14.6V | |
| Boost charging voltage (Flooded FLD) | 14.6V | |
| Boost charging voltage (Sealed SLD) | 14.4V | |
| Boost charging voltage (GEL GEL) | 14.2V | |
| Boost charging voltage (Lithium LI) | 14.4V | |
| Floating charging voltage (FLD, SLD, GEL) | 13.8V | |
| Charging recovery voltage | 13.2V | |
| Over-discharge recovery voltage | 12.5V | Settable with the keys |
| Over-discharge voltage | 11.0V | Settable with the keys |
| Equalizing charging interval | 30 days | |
| Equalizing charging time | 1H | |
| Boost charging time | 2H | |
| Temperature compensation | -3.0mV/°C/2V | |
| Light control voltage | Light control on 5V; light control off 6V | Light control on plus 1V |
| Light control judgment time | 10 minutes | |
| USB function | Yes | |
| Operating temperature | -25°C to +55°C | |
| IP protection degree | IP30 | |
| Net weight | 390g | |
| Protection functions | Battery reverse connection protection, solar panel reverse connection protection, reverse charging protection at night | |
| Dimensions | 164.0×103.5×47.0mm |
Panel Structure
The SRNE HP series solar charge controller features a clear layout for easy connection and monitoring.
- Communication Port: For optional data communication (e.g., with monitoring software).
- LCD Screen: Displays system status, parameters, and error codes.
- Keys: Used for navigating menus and adjusting settings.
- USB Port: (Available on HP2430/2440 models) For charging external devices.
- Solar Panel Terminals: Connect to your solar array.
- Battery Terminals: Connect to your battery bank.
- Load Terminals: Connect to your DC loads.
Setup Instructions
Follow these steps carefully to install your solar charge controller. Incorrect wiring can damage the controller, battery, or other components.
1. Mounting the Controller
- Choose a dry, well-ventilated location away from direct sunlight and heat sources.
- Ensure there is sufficient space around the controller for air circulation, especially around the heat sink on the back.
- Mount the controller vertically on a non-flammable surface using appropriate screws.
2. Wiring Connections
IMPORTANT: Always connect the battery first, then the solar panel, and finally the load. Disconnect in the reverse order.
- Connect the Battery: Connect the positive and negative terminals of your battery bank to the corresponding battery terminals on the controller. Ensure correct polarity. The LCD screen should light up.
- Connect the Solar Panel: Connect the positive and negative wires from your solar panel array to the corresponding solar panel terminals on the controller. Ensure correct polarity.
- Connect the Load: Connect your DC loads (e.g., lights, fans) to the corresponding load terminals on the controller. Ensure correct polarity.
Ensure all connections are tight and secure to prevent loose connections and potential damage.
Operating Instructions
1. Automatic System Voltage Recognition
The controller will automatically detect whether it is connected to a 12V or 24V battery system upon initial connection of the battery. Ensure your battery voltage matches the system voltage you intend to use.
2. LCD Display and Key Operations
The dot matrix graphic LCD screen displays real-time system information. Use the two keys to navigate through menus and adjust parameters. Refer to the on-screen prompts for specific settings.
3. State Indicators
The controller uses various icons and states on the LCD to indicate its operational status. Familiarize yourself with these indicators:
| LCD Icon | Indicated Object | State | Meaning |
|---|---|---|---|
| Day recognition | Steady on | Day time | |
| Night recognition | Steady on | Night time | |
| Solar panel | Steady on | Solar panel indication | |
| BOOST | Charging state | Steady on | Boost charging |
| FLOAT | Charging state | Steady on | Floating charging |
| EQUATIZE | Charging state | Steady on | Equalizing charging |
| Battery icon | Battery | Quick flashing | Battery overvoltage |
| Battery icon | Battery | Slow flashing | Battery over-discharge |
| Battery SOC (4 dashes) | Battery SOC | 100% | |
| Battery SOC (3 dashes) | Battery SOC | 75% | |
| Battery SOC (2 dashes) | Battery SOC | 50% | |
| Battery SOC (1 dash) | Battery SOC | 25% | |
| Battery SOC (0 dashes) | Battery SOC | 0% | |
| Light icon | Load | Steady on | Load turned on |
| Light icon | Load | Steady off | Load turned off |
| Light icon | Load | Quick flashing | Overload or short-circuit protection |
Maintenance
Regular maintenance ensures the longevity and optimal performance of your solar charge controller.
- Cleaning: Periodically clean the controller's casing with a dry cloth. Ensure ventilation openings are free from dust and debris.
- Connections: Annually check all wiring connections for tightness. Loose connections can cause overheating and damage.
- Battery Health: Monitor your battery's health and electrolyte levels (for flooded batteries) as per the battery manufacturer's recommendations.
- Environment: Ensure the controller remains in a dry, well-ventilated environment within its specified operating temperature range (-25°C to +55°C).
Troubleshooting
The SRNE HP series controller is equipped with various protection features. If you encounter issues, refer to the state indicators and the following common troubleshooting steps:
- No Display on LCD: Check battery connections and ensure the battery has sufficient charge.
- Battery Overvoltage (Quick flashing battery icon): The battery voltage has exceeded the overvoltage protection setting (16.0V). Disconnect the solar panel and check battery health.
- Battery Over-discharge (Slow flashing battery icon): The battery voltage has dropped below the over-discharge voltage setting (11.0V). Disconnect loads and charge the battery.
- Load Overload/Short-circuit (Quick flashing load icon): The connected load is drawing too much current or there is a short circuit. Disconnect the load, check for faults, and reconnect.
- No Charging: Check solar panel connections, ensure sufficient sunlight, and verify solar panel voltage is within the controller's input range (<55V).
- Reverse Polarity: The controller has protection against battery and solar panel reverse connections. However, always double-check polarity during installation to prevent damage.
If the problem persists after following these steps, please contact customer support.
Warranty and Support
SRNE products are manufactured to high-quality standards. For warranty information and technical support, please refer to the documentation provided with your purchase or contact your vendor. Keep your proof of purchase for warranty claims.