OOYCYOO MPPT Solar Charge Controller User Manual

1. Introduction

Thank you for choosing the OOYCYOO MPPT Solar Charge Controller. This device is an automatic control unit designed for use in all solar power systems to efficiently manage the charging of batteries from a solar panel array. It utilizes advanced Maximum Power Point Tracking (MPPT) technology to ensure maximum power extraction from your solar panels, providing rapid, efficient, and safe charging for your battery system. This manual provides essential information for the safe installation, operation, and maintenance of your solar charge controller.

Front view of the OOYCYOO MPPT Solar Charge Controller — Figure 1: OOYCYOO MPPT Solar Charge Controller (Front View)

2. Safety Instructions

Please read all instructions and warnings carefully before installation and operation. Keep this manual for future reference.

Ensure all wiring is correctly connected and polarity is observed to prevent damage to the controller and other components.
Always connect the battery first, then the solar panels, and finally the load. Disconnect in the reverse order.
Do not exceed the maximum PV input voltage (160VDC) or current ratings of the controller.
Install the controller in a well-ventilated area to ensure proper heat dissipation.
Avoid short-circuiting the solar panel, battery, or load terminals.
This device is designed for indoor use. Protect it from direct sunlight, high temperatures, and moisture.
Only qualified personnel should perform installation and maintenance.

3. Product Features

Advanced MPPT Technology: Continuously tracks the array’s maximum power point for optimal power extraction. Tracking efficiency ≥ 98.1%, peak conversion efficiency up to 98%.
4-Stage Charging Algorithm: Features Bulk Charge, Boost Charge, Float Charge, and Equalization for rapid, efficient, and safe battery charging.
Wide Voltage/Power Support: Supports high PV input power and voltage up to 160V.
Multi-Voltage Battery Compatibility: Automatically identifies 12V/24V/36V/48V DC battery systems.
Versatile Battery Types: Compatible with various battery types including lead-acid (Sealed, Gel, Flooded), lithium (LI, LFP), with pre-set and user-defined charging parameters.
Dual Cooling System: Constructed with die-cast aluminum for excellent heat dissipation and includes a built-in cooling fan that activates when temperature >45℃ and turns off < 40℃. Fan life up to 5000 hours.
Blacklight LCD Display: Provides clear real-time system information, including KWH charge amount.
Enhanced Safety Protections: Multiple built-in protection functions for safe and reliable operation.

Icons representing multiple protection features and certifications — Figure 2: Multiple Protection Features and Certifications (CE, FC)

4. Product Components

The OOYCYOO MPPT Solar Charge Controller features a robust design with clearly labeled terminals and an intuitive LCD display for easy monitoring and control.

Detailed view of the controller's front panel with labels for LCD Display, 5S Reset button, Solar Panel Terminal, Battery Terminal, and Load Terminal. — Figure 3: Controller Front Panel and Terminals

LCD Display: Shows real-time system status, charging parameters, and energy statistics (KWH).
Control Buttons (A, B, C, D, SET): Used for navigating menus, adjusting settings, and performing resets.
Solar Panel Terminal: Connects to the solar panel array.
Battery Terminal: Connects to the battery bank.
Load Terminal: Connects to DC loads.
5S Reset Button (A+D): Press A and D buttons simultaneously for 5 seconds to reset.

Internal view of the MPPT charge controller, highlighting the copper coil transformer and capacitance components. — Figure 4: Internal Components (Copper Coil Transformer, Capacitance)

5. Setup and Installation

Follow these steps for safe and correct installation of your MPPT solar charge controller. Ensure all power sources are disconnected before making any connections.

5.1 Wiring Order

Connect the Battery: Connect the battery to the controller's battery terminals (positive to positive, negative to negative). Ensure a secure connection. The controller will automatically detect the battery voltage.
Connect the Solar Panels: Connect the solar panel array to the controller's solar panel terminals (positive to positive, negative to negative). Ensure correct polarity.
Connect the Load: Connect the DC load to the controller's load terminals (positive to positive, negative to negative).

Important: Always connect the battery first and disconnect the solar panels first when disassembling the system.

5.2 Installation Diagram

Comprehensive wiring diagram illustrating the connection of solar panels, the MPPT charge controller, a battery bank, an inverter, and AC/DC loads in a typical solar power system. — Figure 5: Typical Solar System Wiring Diagram

Image displaying the LCD screen information summary and a simplified solar controller installation diagram for a battery system. — Figure 6: Simplified Solar Controller Installation Diagram

5.3 Mounting

Mount the controller vertically on a wall or stable surface to allow for optimal airflow.
Ensure there is sufficient space around the controller for heat dissipation, especially above and below the unit where the cooling fan and vents are located.
Avoid mounting in direct sunlight or near heat sources.

Image showing the physical dimensions of the MPPT solar charge controller: 14cm (5.5in) height, 23cm (9.1in) width, and 5.5cm (2.2in) depth. — Figure 7: Controller Dimensions (Approx. 11 x 6 x 2.5 inches)

6. Operating Instructions

6.1 LCD Display

The blacklight LCD display provides comprehensive information about your solar system's performance. It shows:

PV Input: Voltage and current from solar panels.
Battery Status: Voltage, charge level, and charging stage.
Load Output: Current drawn by connected DC loads.
Energy Statistics: KWH charged.
System Icons: Indicate solar charging, battery status, load status, temperature, and fault conditions.

6.2 Control Buttons

Use the buttons (A, B, C, D, SET) to navigate through the display menus and adjust parameters. Refer to the on-screen prompts for specific functions.

SET Button: Enters/exits menu, confirms selections.
A, B, C, D Buttons: Navigate menus, adjust values.
A+D Reset: Press A and D buttons simultaneously for 5 seconds to perform a system reset.

6.3 Battery Type Selection

The controller supports various battery types. Ensure the correct battery type is selected in the settings for optimal charging and battery longevity. The charging algorithm adapts to the selected battery type (e.g., GEL, AGM, Flooded, LI, LiFePO4).

Diagram showing the controller's strong battery adaptability, supporting GEL, AGM, USER, SEL, FLD, LI, and LiFePO4 battery types. Includes a graph of the 4-stage charging algorithm (Bulk, Boost, Float, Equalization). — Figure 8: Battery Compatibility and 4-Stage Charging Curve

7. Maintenance

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

Cleaning: Periodically clean the controller's exterior with a dry cloth to remove dust and debris. Ensure ventilation openings are clear.
Connections: Check all wiring connections periodically to ensure they are tight and free from corrosion.
Fan Operation: Listen for the cooling fan to ensure it operates when the controller temperature rises above 45℃. If the fan is not operating, check for obstructions or contact support.
System Monitoring: Regularly monitor the LCD display for any fault indicators or unusual readings.

8. Troubleshooting

The controller is equipped with multiple protection functions. If an issue occurs, the LCD display may show a fault code or indicator. Here are common protection functions and potential causes:

Image listing various protection functions of the controller — Figure 9: Controller Protection Functions

Protection Function	Possible Cause	Solution
PV Over Current/Power	Solar panel input power exceeds controller's maximum rating.	Reduce PV input power or check system design.
PV Short Circuit	Short circuit in solar panel wiring.	Inspect and repair PV wiring.
PV Reverse Polarity	Solar panel connected with incorrect polarity.	Correct PV wiring polarity.
Night Reverse Charging	Current flowing from battery to solar panels at night.	Normal operation, controller prevents significant discharge.
Battery Reverse Polarity	Battery connected with incorrect polarity.	Correct battery wiring polarity.
Battery Over Voltage	Battery voltage exceeds safe limit.	Check battery type settings and ensure proper charging parameters.
Battery Over Discharge	Battery voltage drops below safe discharge limit.	Charge battery, reduce load, or increase PV input.
Controller Overheating	Ambient temperature too high or insufficient ventilation.	Improve ventilation, reduce load, or relocate controller.
Load Short Circuit	Short circuit in load wiring.	Inspect and repair load wiring.
Load Overload	Load current exceeds controller's maximum rating.	Reduce connected load.
TVS High Voltage Transients	Temporary high voltage spike detected.	Usually self-recovering. Check for external electrical disturbances.

9. Specifications

9.1 General Specifications (EC40A-H & EC60A-H)

System Nominal Voltage: 12V/24V/36V/48V DC Auto identifying
Battery Voltage Range: 9V ~ 55V
Max. PV Open Circuit Voltage: 160VDC
Power Terminal: 6-12 AWG
Dimensions: Approx. 11 x 6 x 2.5 inches (28 x 15 x 6.3 cm)
Weight: Approx. 4 lbs (1.8 kg)
Tracking Efficiency: ≥ 98.1%
Peak Conversion Efficiency: Up to 98%
Cooling: Dual Cooling (Die-cast aluminum housing + Built-in fan)
Certifications: CE, FC

9.2 Model-Specific Technical Data

Parameter	EC40A-H (40A Model)	EC60A-H (60A Model)
Rated Charge Current	40A	60A
12V Battery System Max. PV Input Power	500W (PV Voc ≤ 72V)	720W (PV Voc ≤ 72V)
24V Battery System Max. PV Input Power	1000W (PV Voc ≤ 108V)	1440W (PV Voc ≤ 108V)
36V Battery System Max. PV Input Power	1500W (PV Voc ≤ 144V)	2100W (PV Voc ≤ 144V)
48V Battery System Max. PV Input Power	2000W (PV Voc ≤ 160V)	2800W (PV Voc ≤ 160V)

Table detailing the number of PV modules in series and maximum PV input power for 12V, 24V, and 48V systems, with a maximum open circuit voltage of 160Vdc. — Figure 10: PV Module Configuration Guidelines

9.3 Application Scenarios

Illustrates various application scenarios for the 40A model, such as camping, RVs, boats, and cabins, showing recommended PV input power and max open circuit voltage for 12V, 24V, 36V, and 48V battery systems. — Figure 11: EC40A-H Application Scenarios

Illustrates various application scenarios for the 60A model, such as camping, RVs, houses, and construction sites, showing recommended PV input power and max open circuit voltage for 12V, 24V, 36V, and 48V battery systems. — Figure 12: EC60A-H Application Scenarios

10. User Tips

Proper Sizing: Ensure your solar panel array's total power and voltage are within the controller's specifications for your battery system voltage to prevent damage and ensure efficient operation.
Battery Health: Regularly check your battery's health and water levels (for flooded batteries) to maximize its lifespan.
System Expansion: If expanding your solar system, ensure the new components are compatible with your existing setup and the controller's capacity. For higher current needs, two 60A controllers can be put in parallel to achieve 120A.

11. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.

OOYCYOO EC60A-H, EC40A-H