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

1. Johdanto

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.

Kuva 1: Etuosa view of the Offgridtec MPPT Pro Duo Charge Controller.

2. Turvallisuusohjeet

Always observe the following safety precautions to prevent personal injury or damage to the controller and connected equipment:

• Asennuksen saa suorittaa vain pätevä henkilöstö.
• Ensure all power sources (solar panels, batteries) are disconnected before installation or maintenance.
• Käytä asianmukaisia ​​työkaluja ja käytä suojavarusteita.
• Do not disassemble or attempt to repair the controller. Contact Offgridtec support for assistance.
• Varmista ohjaimen ympärillä oleva asianmukainen ilmanvaihto ylikuumenemisen estämiseksi.
• 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. Tuote ohiview

3.1 Tärkeimmät ominaisuudet

• 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 Komponentit

The Offgridtec MPPT Pro Duo charge controller includes:

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

Kuva 2: Edestä ja takaa view of the charge controller, highlighting the heatsink design.

4. Asennus ja asennus

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

4.1 Asennuspaikka

• Asenna ohjain pystysuoraan syttymättömälle alustalle.
• Ensure adequate air circulation around the heatsink for optimal cooling.
• Vältä paikkoja, jotka altistuvat suoralle auringonvalolle, korkeille lämpötiloille tai kosteudelle.
• 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 Kytkentäkaavio ja liitännät

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 voltage of your solar array does not exceed 100V.
4. Connect Temperature Sensors: The controller includes ports for temperature sensors. Connect the provided sensor to monitor battery temperature for optimized charging.
5. Valinnaiset liitännät:
   • RS485-tiedonsiirto: 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. Maadoitus: Ensure the controller is properly grounded (negative grounding).

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

Kuva 5: Esimample installation of the charge controller in a recreational vehicle.

5. Käyttöohjeet

5.1 Ensimmäinen käynnistys

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. Paina ja pidä painettuna SARJA button for approximately 5 seconds until the battery type indicator starts flashing.
2. Paina SARJA 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-ilmaisimet

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

• PV Status LED: Indicates solar panel input status.
• 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.
• Virhe-LED: Illuminates to indicate a fault or warning. Refer to the troubleshooting section.

Figure 6: Installed charge controller showing illuminated LED indicators.

5.4 Latausprosessi

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).

• Irtolataus: Tarjoaa maksimaalisen virran akun nopeaa lataamista varten.
• Absorptiomaksu: Pitää äänenvoimakkuuden vakionatage to fully charge the battery without overcharging.
• Kelluva veloitus: Vähentää tilavuuttatagalemmalle tasolle akun pitämiseksi täydessä latauksessa ja itsepurkautumisen kompensoimiseksi.

6. Huolto

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

• Silmämääräinen tarkastus: Periodically check for loose connections, damaged wiring, or signs of corrosion.
• Puhdistus: Keep the controller clean and free of dust. Use a dry cloth to wipe the exterior. Do not use liquids or solvents.
• Ilmanvaihto: Varmista, että jäähdytysripojen tiellä ei ole tukosta, jotta lämpö pääsee haihtumaan kunnolla.
• Yhteyden tarkistus: Verify that all terminal connections are tight and secure.
• Akun kunto: Monitor the health of your batteries. A failing battery can affect the performance of the entire system.

7. Vianmääritys

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. Tekniset tiedot

9. Takuu ja tuki

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 websivustolta tai ostodokumentaatiostasi.

10. Tyypilliset sovellukset

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 Campervans
• Marine Systems (Boats & Yachts)
• Remote Telecommunication Stations
• Off-grid Cabins and Small Homes
• Camping and Outdoor Solar Setups

Kuva 7: Esimamples of typical applications for the MPPT Pro Duo charge controller.