1. Inleiding
The Walfront MPPT Solar Charge Controller is designed to efficiently manage power flow from your solar panels to your battery bank, optimizing charging performance for off-grid solar systems. This manual provides essential information for the safe and effective installation, operation, and maintenance of your 50A MPPT solar charge controller.

Image 1.1: Walfront MPPT Solar Charge Controller 50A. This image shows the front view of the orange and black controller, featuring an LCD screen displaying PV, Battery, and Load information, along with 'ESC' and 'SET' buttons.
2. Belangrijkste kenmerken
- High Efficiency MPPT Tracking: Features MPPT tracking efficiency greater than 99% and a maximum conversion efficiency of up to 98%, maximizing energy harvest from solar panels.
- Wide 180V PV Input and Auto Voltage Erkenning: Supports a maximum solar input voltage of 180V (at 25℃) and automatically recognizes 12V, 24V, 36V, and 48V battery systems. Compatible with battery voltages van 9V tot 64V.
- Clear LCD Display and Smart Protection: Built-in LCD provides real-time system data (voltage, current, operating status). Includes temperature compensation and multiple protection features for safe operation.
- Low No-Load Loss and Reliable Performance: No-load loss of ≤0.4W conserves energy. Designed for reliable operation in temperatures from -10℃ to 65℃ and altitudes up to 3000 meters.
- Eenvoudig te installeren en te gebruiken: Auto-recognition feature simplifies setup. Compact design allows for straightforward mounting.

Image 2.1: Automatic Voltage Identification. This image highlights the controller's ability to automatically identify 12V, 24V, 36V, and 48V systems, shown with various solar panel application examples.
3. Veiligheidsinformatie
Please read all instructions carefully before installation and operation. Failure to follow these safety guidelines may result in personal injury, damage to the controller, or other equipment.
- Ensure all wiring is correctly polarized and securely connected. Loose connections can cause overheating and damage.
- Sluit altijd eerst de accu aan, dan het zonnepaneel en als laatste de belasting. Ontkoppelen in omgekeerde volgorde.
- Do not connect the solar panel array to the controller without a battery connected.
- Zorg ervoor dat het systeem vol istage of the solar panel and battery are compatible with the controller's specifications.
- Installeer de controller op een goed geventileerde plaats, uit de buurt van brandbare materialen en direct zonlicht.
- Raak geen stroomvoerende aansluitingen aan. Gebruik geïsoleerd gereedschap tijdens de installatie.
- This device is not waterproof. Protect it from moisture and water exposure.
4. Inhoud van het pakket
Controleer of alle hieronder vermelde artikelen in uw pakket zitten:
- 1 x Walfront MPPT Solar Charge Controller (50A)
- 4 x Schroeven
- 4 x expansieschroeven
- 1 x Gebruikershandleiding (dit document)

Image 4.1: Package Contents. This image displays the solar charge controller alongside the mounting screws and expansion screws provided in the package.
5. Installatie en installatie
Follow these steps for proper installation of your solar charge controller.
5.1 De regelaar monteren
- Choose a dry, well-ventilated location, protected from direct sunlight, high temperatures, and moisture.
- Ensure there is sufficient space around the controller for heat dissipation, especially around the cooling fins.
- Mount the controller vertically on a solid surface using the provided screws.
5.2 bedradingsverbindingen
Refer to the wiring diagrams below for correct connection sequence. Always connect in the following order:
- Sluit de batterij aan: Connect the battery to the controller's battery terminals. Ensure correct polarity (+ to + and - to -). The controller will automatically detect the battery voltage.
- Sluit het zonnepaneel aan: Sluit de zonnepanelen aan op de PV-aansluitingen van de controller. Let op de juiste polariteit.
- Sluit de DC-belasting aan (optioneel): Sluit de DC-belasting aan op de belastingsaansluitingen van de controller. Let op de juiste polariteit.
To disconnect the system, follow the reverse order: disconnect load, then solar panel, then battery.

Image 5.1: Basic System Connection Diagram. This diagram illustrates the connection order: 1. Battery Assembly, 2. Solar Panel Assembly, 3. DC Load. It also shows an AC Load and Inverter connected to the Battery Assembly.

Image 5.2: Detailed System Wiring Diagram. This diagram provides a more comprehensive view of a solar power system, including solar panels, battery, inverter (AC Output/Input), and various AC loads like laptops, lights, air conditioners, televisions, and fans.
6. Gebruiksaanwijzing
The controller features an LCD display and control buttons for monitoring and configuration.
6.1 LCD-scherm
The LCD screen provides real-time information about your solar system, including:
- PV (Photovoltaic) Status: Ingangsvolumetage, current, and power from solar panels.
- BATT (Battery) Status: Batterij voltage, charging current, and state of charge.
- LOAD Status: Output current and power to the DC load.
- Systeem Voltage: Automatically detected battery system voltage (12V/24V/36V/48V).
- Foutindicatoren: Displays fault codes or warnings if issues occur.
6.2 bedieningsknoppen
The controller has three buttons: ESC, Up/Down arrows, and SET.
- ESC-knop: Used to exit current menu or cancel an operation.
- Omhoog/omlaag-knoppen: Wordt gebruikt om door menuopties te navigeren of parameterwaarden aan te passen.
- Zet knop: Used to enter a menu, confirm a selection, or save changes to parameters.

Image 6.1: Control Buttons. This close-up image shows the 'ESC', 'Up arrow', 'Down arrow', and 'SET' buttons on the controller's front panel.
7. Onderhoud
Regelmatig onderhoud zorgt ervoor dat uw zonnelaadregelaar optimaal presteert en lang meegaat.
- Schoonmaak: Periodically clean the controller's exterior with a dry cloth. Ensure the cooling fins are free from dust and debris to maintain proper heat dissipation.
- Verbindingen: Check all wiring connections regularly to ensure they are tight and free from corrosion.
- Inspectie: Inspect the controller for any signs of physical damage, overheating, or unusual odors.
- Omgeving: Ensure the installation environment remains dry and well-ventilated.

Image 7.1: Cooling Fins. This close-up shows the cooling fins on the top of the controller, which are crucial for heat dissipation and require regular cleaning.
8. Probleemoplossing
Als u problemen ondervindt met uw controller, raadpleeg dan de volgende veelvoorkomende problemen en oplossingen:
| Probleem | Mogelijke oorzaak | Oplossing |
|---|---|---|
| Controllerdisplay is uit | Geen batterij aangesloten of batterijspanningtagte laag. | Ensure battery is connected correctly and has sufficient charge (above 9V). |
| No charging current from PV | Solar panels not connected, insufficient sunlight, or PV polarity reversed. | Check PV connections and polarity. Ensure adequate sunlight. Verify PV voltage is binnen bereik. |
| Laden werkt niet | Load disconnected, load current too high, or load polarity reversed. | Check load connections and polarity. Ensure load current does not exceed controller's rating. |
| Batterij niet volledig opgeladen | Insufficient solar input, undersized solar array, or battery issues. | Increase solar panel capacity or check for shading. Inspect battery health. |
9. Technische specificaties
Below are the technical specifications for the Walfront MPPT Solar Charge Controller 50A.
| Parameter | Specificatie |
|---|---|
| Systeem Voltage | 12V / 24V / 36V / 48V Auto |
| Nominale laadstroom | 50A |
| No Load Loss | ≤0.4W |
| Solar Maximum Input Voltage | 180V (at 25℃), 150V (at -25℃) |
| Batterijvolumetage Bereik | 9-64V |
| Maximale Power Point Voltage Bereik | Batterijvolumetage +2V tot 150V |
| Conversie-efficiëntie | ≤98% |
| MPPT-trackingefficiëntie | >99% |
| Temperatuurcompensatiecoëfficiënt | -2mv/℃/2V (default value) |
| Werktemperatuur | -10℃ tot 65℃ |
| Beschermingsgraad | IP21 |
| Hoogte | ≤3000 Meter / 9842.5ft |

Image 9.1: Model Comparison Table. This table provides a comparison of rated charging current and solar panel maximum input power for CM-50 (50A) and CM-60 (60A) models across different system voltagen.
10. Garantie en ondersteuning
Voor garantie-informatie en technische ondersteuning kunt u de documentatie raadplegen die u bij aankoop hebt ontvangen of contact opnemen met uw winkelier. Bewaar uw aankoopbewijs.