Offgridtec MPPT Pro Duo Charge Controller 30A 12V/24V Instruction Manual

1. Inleiding

Thank you for choosing the Offgridtec MPPT Pro Duo charge controller. This device is designed to efficiently manage solar power input to charge two independent battery banks, typically a main service battery and a starter battery, in 12V or 24V systems. It utilizes Maximum Power Point Tracking (MPPT) technology to optimize energy harvest from your solar panels. Please read this manual thoroughly before installation and operation to ensure safe and optimal performance.

Figuur 1: Voorzijde view of the Offgridtec MPPT Pro Duo Charge Controller.

2. Veiligheidsinstructies

Neem altijd de volgende veiligheidsmaatregelen in acht om persoonlijk letsel of schade aan de controller en aangesloten apparatuur te voorkomen:

• De installatie mag alleen worden uitgevoerd door gekwalificeerd personeel.
• Ensure all power sources (solar panels, batteries) are disconnected before installation or maintenance.
• Gebruik het juiste gereedschap en draag beschermende kleding.
• Do not disassemble or attempt to repair the controller. Contact Offgridtec support for assistance.
• Zorg voor voldoende ventilatie rond de controller om oververhitting te voorkomen.
• Connect batteries with correct polarity. Reverse polarity can cause severe damage.
• Use fuses or circuit breakers on all battery and solar panel connections as recommended by local regulations and system design.
• Avoid short-circuiting battery terminals or solar panel wires.
• Keep the controller away from flammable materials, moisture, and direct sunlight.

3. Product voorbijview

3.1 Belangrijkste kenmerken

• Dual battery charging: Charges both main (service) and starter batteries.
• MPPT Technology: Maximizes power harvest from solar panels.
• Supports 12V and 24V systems.
• Maximum charge current up to 30A.
• Adaptive three-level charging for extended battery life.
• Supports various battery types: Gel, Flooded, LiFePO4, Li-NiCoMn (for main battery).
• Secondary charge output for starter battery (supports lead-acid).
• Optional remote display and Bluetooth compatibility (accessories required).
• AES control signal for car refrigerators to prevent energy waste.
• Standard bus protocol and RS485 communication connection.
• Robust aluminum heatsink design for efficient cooling.
• Overload, reverse polarity, and deep discharge protection.

3.2 Componenten

The Offgridtec MPPT Pro Duo charge controller includes:

• MPPT Pro Duo Charge Controller unit.
• Aansluitklemmen.
• Integrated LED status indicators.
• SET button for battery type selection.
• Temperature sensor ports (one with integrated sensor, one for external).
• RS485-communicatiepoort.
• AES signal output port.

Figuur 2: Voor- en achterkant view of the charge controller, highlighting the heatsink design.

4. Installatie en installatie

Proper installation is crucial for the safe and efficient operation of your charge controller. Ensure all safety instructions are followed.

4.1 Montagelocatie

• Mount the controller vertically on a non-flammable surface.
• Ensure adequate air circulation around the heatsink for optimal cooling.
• Avoid locations exposed to direct sunlight, high temperatures, or moisture.
• Dimensions: 24.7 cm (L) x 16.5 cm (W) x 6.9 cm (H).
• Mounting holes diameter: 5 mm.

Figure 3: Physical dimensions of the MPPT Pro Duo charge controller, showing the aluminum heatsink.

4.2 Bedradingsschema en aansluitingen

Follow the wiring sequence below. Incorrect wiring can damage the controller or batteries.

1. Connect Battery 1 (Main/Service Battery): Connect the positive and negative terminals of your main battery to the BATT1 terminals on the controller. Use appropriate cable gauge (e.g., 16 mm² / AWG6). Ensure correct polarity.
2. Connect Battery 2 (Starter Battery): Connect the positive and negative terminals of your starter battery to the BATT2 terminals on the controller. Use appropriate cable gauge (e.g., 4 mm² / AWG12). Ensure correct polarity.
3. Connect Solar Panels (PV): Connect the positive and negative terminals of your solar panel array to the PV terminals on the controller. Ensure the open-circuit voltagDe spanning van uw zonnepanelen mag niet hoger zijn dan 100V.
4. Connect Temperature Sensors: The controller includes ports for temperature sensors. Connect the provided sensor to monitor battery temperature for optimized charging.
5. Optionele aansluitingen:
   • RS485-communicatie: For connecting an optional remote display or USB adapter for PC communication.
   • AES Signal Output: For controlling car refrigerators to prevent excessive discharge of the main battery.
6. Aarding: Ensure the controller is properly grounded (negative grounding).

Figure 4: Simplified wiring diagram showing connections from solar panel to controller and dual batteries.

Afbeelding 5: Example installation of the charge controller in a recreational vehicle.

5. Gebruiksaanwijzing

5.1 Eerste inschakeling

After all connections are securely made, connect the battery power first, then the solar panel power. The controller will perform a self-test, and the LED indicators will illuminate.

5.2 Setting Battery Type (BATT1)

The controller supports various battery types for the main battery (BATT1). To select the correct battery type:

1. Houd de SET button for approximately 5 seconds until the battery type indicator starts flashing.
2. Druk op de SET button repeatedly to cycle through the available battery types (Gel, Flooded, LiFePO4, Li-NiCoMn).
3. Once the desired battery type is selected, wait for 5 seconds without pressing any button. The indicator will stop flashing, and the setting will be saved.

The secondary battery (BATT2) is typically charged as a lead-acid battery and does not require specific type selection.

5.3 LED-indicatoren

The front panel features LED indicators to show the operational status:

• PV Status LED: Geeft de status van de zonnepaneelinvoer aan.
• BATT1 Status LEDs: Show the charging stage and state of charge for the main battery.
• BATT2 Status LED: Indicates charging status for the starter battery.
• Fout-LED: Illuminates to indicate a fault or warning. Refer to the troubleshooting section.

Figure 6: Installed charge controller showing illuminated LED indicators.

5.4 Laadproces

The MPPT Pro Duo uses an adaptive three-level charging algorithm to optimize battery health and lifespan. It prioritizes charging the main battery (BATT1) and then provides a maintenance charge to the starter battery (BATT2).

• Bulklading: Levert maximale stroom om de batterij snel op te laden.
• Absorptielast: Handhaaft een constant volumetage om de batterij volledig op te laden zonder overladen.
• Drijvende lading: Vermindert volumetage naar een lager niveau om de batterij volledig opgeladen te houden en zelfontlading te compenseren.

6. Onderhoud

Regular maintenance ensures the longevity and optimal performance of your charge controller:

• Visuele inspectie: Periodically check for loose connections, damaged wiring, or signs of corrosion.
• Schoonmaak: Keep the controller clean and free of dust. Use a dry cloth to wipe the exterior. Do not use liquids or solvents.
• Ventilatie: Ensure the heatsink fins are not obstructed to allow for proper heat dissipation.
• Verbindingscontrole: Verify that all terminal connections are tight and secure.
• Batterijstatus: Monitor the health of your batteries. A failing battery can affect the performance of the entire system.

7. Probleemoplossing

If you encounter issues with your MPPT Pro Duo, refer to the following common problems and solutions:

If the problem persists after attempting these solutions, please contact Offgridtec customer support.

8. Specificaties

9. Garantie en ondersteuning

For warranty information, please refer to the terms and conditions provided at the time of purchase or contact Offgridtec GmbH directly. Keep your proof of purchase for any warranty claims.

For technical support, troubleshooting assistance beyond this manual, or inquiries about accessories, please contact Offgridtec customer service. Contact details can typically be found on the manufacturer's official webwebsite of uw aankoopdocumentatie.

10. Typische toepassingen

The Offgridtec MPPT Pro Duo charge controller is suitable for a variety of off-grid and mobile solar power systems, including:

• Recreational Vehicles (RVs) and Campervan uitgaan
• Marine Systems (Boats & Yachts)
• Remote Telecommunication Stations
• Off-grid Cabins and Small Homes
• Camping and Outdoor Solar Setups

Afbeelding 7: Examples of typical applications for the MPPT Pro Duo charge controller.