1. Introducció
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.
Característiques principals:
- Controlador de càrrega solar de 20A: 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%.
- Voltage/Power Ranges: Can accept solar voltage up to 60V. Recommended maximum input power is 260W for 12V systems and 520W for 24V systems.
- Tipus de bateries compatibles: 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.
- Pantalla LCD: Provides accurate and timely information on charging current, generated energy, temperature, battery voltage, and error codes for easy monitoring and control.
2. Informació de seguretat
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.
- Instal·leu el controlador en una zona ben ventilada, allunyada de materials inflamables i de la llum solar directa.
- 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.
- Consulteu un electricista qualificat si teniu dubtes sobre alguna part de la instal·lació.
3. Configuració i instal·lació
3.1 Contingut del paquet
The Keeper series package includes:
- 1 x PowMr MPPT Solar Charge Controller
- 1 x Manual d'usuari
- 1 x Installation Guide Card
Vídeo: Desempaquetatge i mésview of the PowMr MPPT Solar Charge Controller, showing the package contents and different models available.
3.2 Muntatge del controlador
Follow these steps to securely mount the solar charge controller:
- Seleccioneu una ubicació d'instal·lació: 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.
- Marqueu els forats de muntatge: Use the provided installation guide plate to mark the four mounting holes on the wall.
- Assegurar el controlador: 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.
- Connecteu la bateria: 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.
- Connecteu la càrrega de CC (opcional): 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.
- Activa el sistema: 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. Instruccions de funcionament
4.1 Pantalla LCD acabadaview
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.

Imatge: Més deview of the LCD display, detailing the main interface, system voltage selection, total charge power, load mode, load disconnect voltage, flotador voltage, and load reconnect voltage screens.
4.2 Selecció del tipus de bateria
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.
- Usuari definit: 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 Modes de treball de càrrega
The controller offers flexible load output control modes:
- Mode manual (24 h): La sortida de càrrega està activada contínuament durant 24 hores.
- Mode de control de la llum solar (posta de sol-sortida del sol): 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. Manteniment
Regular maintenance ensures the longevity and efficient operation of your solar charge controller.
- Comproveu les connexions: Periodically inspect all wiring connections for tightness and corrosion. Loose connections can cause overheating and damage.
- Netegeu el controlador: Keep the controller clean and free from dust and debris. Ensure the cooling fins are not obstructed to allow for proper heat dissipation.
- Monitoritzar el rendiment: Regularly check the LCD display for normal operation and any error codes. Compare actual performance with expected values.
- Inspecció de la bateria: Inspect your batteries for any signs of damage, swelling, or leakage. Ensure battery terminals are clean.
- Control ambiental: Assegureu-vos que l'entorn d'instal·lació es mantingui dins dels rangs de temperatura i humitat de funcionament especificats.
6. Solució De Problemes
This section provides solutions to common issues you might encounter with your solar charge controller.
| Problema | Causa possible | Solució |
|---|---|---|
| El controlador no s'encén / No hi ha pantalla |
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| La bateria no es carrega |
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| La càrrega no funciona |
|
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| Es mostra el codi d'error |
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7. Especificacions
| Característica | Detall |
|---|---|
| Número de model | Keeper1220 |
| Marca | Pow Sr |
| Volum del sistematage | 12 V / 24 V automàtic |
| Corrent de càrrega nominal | 20A |
| Màx. Circuit obert PV Voltage | 60 V |
| Max. PV Input Power (12V System) | 260W |
| Max. PV Input Power (24V System) | 520W |
| Tipus de bateria compatibles | User, Flooded, AGM, GEL, LiFePO4, Lithium |
| Tipus de visualització | LCD |
| Temperatura de funcionament | Fins a 55°C |
| Pes de l'article | 1.48 lliures (0.67 quilograms) |
| Dimensions del paquet | 7.87 x 5.2 x 2.24 polzades |
| Material | Plàstic |
| Color | Negre |
8. Garantia i Suport
PowMr products are designed for reliability and performance. For warranty information and technical support, please refer to the official PowMr weblloc o poseu-vos en contacte amb el vostre distribuïdor.
Protection plans may be available for extended coverage. Please check with your vendor for details on available protection plans.





