1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your PowMr MPPT Solar Charge Controller. Please read this manual thoroughly before installation and use to ensure optimal performance and safety.
The PowMr MPPT Solar Charge Controller is designed to efficiently manage power flow from your solar panels to your battery bank. It features advanced Maximum Power Point Tracking (MPPT) technology, ensuring high charging efficiency and extending battery life.
Key Features:
- 20A Solar Charge Controller: Automatically detects 12V or 24V systems. Rated charging current is 20A. Maximum PV Open Circuit Voltage is 60V. Advanced MPPT technology ensures tracking efficiency of no less than 99.5%.
- Supported Voltage/Power Ranges: Can accept solar voltage up to 60V. Recommended maximum input power is 260W for 12V systems and 520W for 24V systems.
- Compatible Battery Types: Supports 12V/24V battery systems, including User-defined, Flooded, AGM, GEL, LiFePO4, and other customized battery types.
- Multiple Load Control Modes: Features excellent heat sink design and various load control modes: 24 Hours Working, Light Control, and Light+Time Control.
- LCD Display: Provides accurate and timely information on charging current, generated energy, temperature, battery voltage, and error codes for easy monitoring and control.
2. Safety Information
Please read all safety instructions carefully before installation and operation.
- Ensure all connections are correct and secure before powering on the system.
- Always connect the battery first, then the solar panels, and finally the load. Disconnect in reverse order.
- Do not short-circuit the battery terminals or solar panel terminals.
- Install the controller in a well-ventilated area, away from flammable materials and direct sunlight.
- Avoid installing the controller in a location where water can enter.
- Use appropriate wire gauges for all connections to prevent overheating.
- This device is not a toy. Keep it out of reach of children.
- Consult a qualified electrician if you are unsure about any part of the installation.
3. Setup and Installation
3.1 Package Contents
The Keeper series package includes:
- 1 x PowMr MPPT Solar Charge Controller
- 1 x User Manual
- 1 x Installation Guide Card
Video: Unboxing and overview of the PowMr MPPT Solar Charge Controller, showing the package contents and different models available.
3.2 Mounting the Controller
Follow these steps to securely mount the solar charge controller:
- Select an Installation Location: Choose a well-ventilated area. Ensure there is enough space for air to flow through the cooling fins of the controller to ensure natural heat dissipation. Avoid direct sunlight or areas with high humidity.
- Mark Mounting Holes: Use the provided installation guide plate to mark the four mounting holes on the wall.
- Secure the Controller: Drill holes at the marked positions and secure the controller to the wall using four screws.
Image: Diagram illustrating the steps for marking mounting holes and securing the controller to a surface.
Video: Quick wiring guide for the PowMr MPPT Controller, demonstrating the physical installation and connection steps.
3.3 Wiring Sequence
Important: Always connect the battery first, then the solar panels, and finally the load. Disconnect in reverse order.
- Open the Terminal Cover: Carefully remove the orange terminal screw cover at the bottom of the controller.
- Loosen Terminal Screws: Use a screwdriver to loosen all terminal screws.
- Connect the Battery: Connect the battery positive (+) and negative (-) wires to the corresponding battery terminals on the controller. Ensure a secure connection.
- Connect Solar Panels (PV Input): Connect the solar panel positive (+) and negative (-) wires to the corresponding PV input terminals.
- Connect the DC Load (Optional): If using a DC load directly from the controller, connect its positive (+) and negative (-) wires to the load terminals.
- Close the Terminal Cover: Replace the orange terminal screw cover.
- Activate the System: Close the battery circuit breaker to start the controller. Then, turn on the photovoltaic input (solar panel circuit breaker).
Image: Step-by-step visual guide for wiring the solar charge controller, emphasizing the correct connection order.
Image: Wiring diagram for 12V and 24V systems, showing connections from solar panels to the controller and then to the battery and load.
4. Operating Instructions
4.1 LCD Display Overview
The LCD display provides real-time information about the system's status. Press the "MENU" button to view parameters and the "SET" button to change them.
Image: Overview of the LCD display, detailing the main interface, system voltage selection, total charge power, load mode, load disconnect voltage, float voltage, and load reconnect voltage screens.
4.2 Battery Type Selection
The controller supports various battery types. It is crucial to select the correct battery type for optimal charging and battery longevity.
- AUTO 12V/24V Lead-Acid: Automatic detection for lead-acid batteries.
- 12V Lead-Acid / 24V Lead-Acid: Specific settings for 12V or 24V lead-acid batteries.
- 12V LiFePO4 / 24V LiFePO4: Specific settings for 12V or 24V Lithium Iron Phosphate batteries.
- User-defined: Allows custom voltage settings for specialized battery types.
Image: Visual representation of the five battery modes available for selection, including Auto Lead-Acid, 12V/24V Lead-Acid, and 12V/24V LiFePO4.
4.3 Load Working Modes
The controller offers flexible load output control modes:
- Manual Mode (24H): The load output is continuously on for 24 hours.
- Solar Light Control Mode (Sunset-Sunrise): The load output turns on at sunset and turns off at sunrise.
- Solar Light + Time Control: The load output turns on at sunset and stays on for a user-defined duration, then turns off.
Image: Illustration of the load working modes, including manual 24H, solar light control (sunset-sunrise), and solar light plus time control.
5. Maintenance
Regular maintenance ensures the longevity and efficient operation of your solar charge controller.
- Check Connections: Periodically inspect all wiring connections for tightness and corrosion. Loose connections can cause overheating and damage.
- Clean the Controller: Keep the controller clean and free from dust and debris. Ensure the cooling fins are not obstructed to allow for proper heat dissipation.
- Monitor Performance: Regularly check the LCD display for normal operation and any error codes. Compare actual performance with expected values.
- Battery Inspection: Inspect your batteries for any signs of damage, swelling, or leakage. Ensure battery terminals are clean.
- Environmental Check: Ensure the installation environment remains within the specified operating temperature and humidity ranges.
6. Troubleshooting
This section provides solutions to common issues you might encounter with your solar charge controller.
| Problem | Possible Cause | Solution |
|---|---|---|
| Controller not turning on / No display |
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| Battery not charging |
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| Load not working |
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| Error code displayed |
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7. Specifications
| Feature | Detail |
|---|---|
| Model Number | Keeper1220 |
| Brand | PowMr |
| System Voltage | 12V / 24V Auto |
| Rated Charging Current | 20A |
| Max. PV Open Circuit Voltage | 60V |
| Max. PV Input Power (12V System) | 260W |
| Max. PV Input Power (24V System) | 520W |
| Battery Types Supported | User, Flooded, AGM, GEL, LiFePO4, Lithium |
| Display Type | LCD |
| Operating Temperature | Up to 55°C |
| Item Weight | 1.48 pounds (0.67 Kilograms) |
| Package Dimensions | 7.87 x 5.2 x 2.24 inches |
| Material | Plastic |
| Color | Black |
8. Warranty and Support
PowMr products are designed for reliability and performance. For warranty information and technical support, please refer to the official PowMr website or contact your retailer.
Protection plans may be available for extended coverage. Please check with your vendor for details on available protection plans.
