OOYCYOO 100A MPPT Solar Charge Controller (K100) User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your OOYCYOO 100A MPPT Solar Charge Controller, model K100. This advanced controller is designed for 12V and 24V battery systems, automatically identifying the system voltage. It features Maximum Power Point Tracking (MPPT) technology for efficient solar energy conversion, supporting various battery types including AGM, Sealed, Gel, Flooded, and Lithium batteries. The K100 model offers enhanced functionalities and advanced technology for reliable solar power management.

2. Safety Information

Please read all instructions carefully before installation and operation. Failure to follow these instructions may result in damage to the unit, personal injury, or property damage. Always ensure proper ventilation and connections.

2.1. Protection Functions

• PV Over Current/Power: Protects against excessive current or power from solar panels.
• PV Short Circuit: Prevents damage from short circuits in the solar array.
• PV Reverse Polarity: Protects if solar panel polarity is reversed.
• Night Reverse Charging: Prevents battery discharge back to solar panels at night.
• Battery Reverse Polarity: Protects if battery polarity is reversed.
• Battery Over Voltage: Prevents overcharging of the battery.
• Battery Over Discharge: Protects the battery from deep discharge.
• Battery Overheating, Controller Overheating: Shuts down or reduces power to prevent thermal damage.
• Lithium Battery Low Temperature: Protects lithium batteries from charging at low temperatures.
• Load Short Circuit: Protects the load output from short circuits.
• Load Overload: Prevents damage from excessive load current.
• TVS High Voltage Transients: Provides protection against voltage spikes.

3. Package Contents

Verify that all items are present in your package:

• 1 x OOYCYOO 100A MPPT Solar Charge Controller (K100)
• 1 x Temperature Sensor
• 1 x User Manual (English)

4. Product Overview

The OOYCYOO K100 MPPT Solar Charge Controller is designed for robust performance and ease of use. It features a blacklight LCD display for clear monitoring of charging status and system parameters. The unit incorporates scientifically designed convection cooling with two highly efficient exhaust fans to maintain optimal operating temperatures.

4.1. Component Identification

Figure 1: Controller Terminals and Ports. This image shows the various connection points on the controller, including solar panel terminals, battery terminals, load terminals, USB 5V/2A output, RS485 communication port, and temperature sensor port. Wire jacks are clearly marked for positive and negative connections.

Figure 2: Multiple Protection Features. This diagram highlights the comprehensive safety protections integrated into the controller, such as high temperature, overcharge, reverse current, over discharge, overload, short circuit, and reverse polarity protection.

Figure 3: External Display Unit. An image of the optional external LCD display unit, which connects to the controller via an RS485 communication interface. This unit allows for remote monitoring and adjustment of parameters.

4.2. Product Video Overview

5. Setup and Installation

Proper installation is crucial for the optimal performance and longevity of your solar charge controller. Ensure all connections are secure and follow the recommended wiring sequence.

5.1. Mounting the Controller

• Mount the controller in a well-ventilated area, away from direct sunlight and moisture.
• Ensure sufficient clearance around the unit for proper airflow, especially around the exhaust fans and the back fence mesh design for heat dissipation.
• The controller should be mounted vertically on a non-flammable surface.

5.2. Wiring Connections

Follow the wiring sequence below to prevent damage:

1. Connect the Battery: First, connect the battery to the controller's battery terminals. Ensure correct polarity (+ to + and - to -). The controller will automatically detect the 12V or 24V system voltage.
2. Connect the Solar Panels: Next, connect the solar panels to the controller's solar terminals. Verify correct polarity.
3. Connect the Load (Optional): Finally, connect your DC loads to the controller's load terminals.

The power terminals accommodate 10 AWG wiring. For optimal performance, use appropriate wire gauges for all connections.

Figure 4: Battery Adaptability. This illustration demonstrates the controller's compatibility with various battery types (GEL, SEL, USER, AGM, FLD, LI, LiFePO4) and shows a typical charging curve (Bulk Charge, Constant Charging, Float Charge).

6. Operating Instructions

Once installed, the controller will begin operating automatically. The built-in LCD display provides real-time information about your solar system.

6.1. LCD Display and Monitoring

The blacklight LCD display shows various parameters simultaneously, including:

• Solar Panel Voltage (PV) and Current (A)
• Battery Voltage (BATT) and State of Charge (%)
• Load Voltage (LOAD) and Current (A)
• Cumulative power (KWH)
• Ambient Temperature
• Charging Faults or Errors
• Load Status (ON/OFF)

The controller automatically tracks real-time data changes in these parameters, providing a comprehensive overview of your system's performance.

6.2. External Display (Optional)

An optional external display unit (LCD D485) can be connected via the RS485 communication port. This unit allows for remote monitoring and adjustment of controller functions and parameters, offering greater flexibility in system management. The external display package includes a 1.5-meter extension cable for convenient placement.

7. Maintenance

Regular maintenance ensures the long-term reliability and efficiency of your OOYCYOO MPPT Solar Charge Controller.

• Cleanliness: Keep the controller clean and free from dust and debris. Use a dry cloth for cleaning.
• Connections: Periodically check all wiring connections to ensure they are tight and free from corrosion.
• Ventilation: Ensure that the cooling fans and ventilation openings are not obstructed. The built-in cooling fan activates when the internal temperature exceeds 45°C and turns off below 40°C, contributing to a longer lifespan (up to 5000 hours in normal use).
• Battery Inspection: Regularly inspect your batteries for any signs of damage or leakage.

8. Troubleshooting

If you encounter issues with your solar charge controller, refer to the following common problems and solutions. For complex issues, please contact customer support.

• No Display/Power: Check battery connections and ensure the battery voltage is within the operating range (9V-32V).
• No Charging: Verify solar panel connections and ensure sufficient sunlight. Check for PV over current/power or short circuit protection activation.
• Load Not Working: Check load connections and ensure the load is not overloaded or short-circuited. Verify battery voltage is above the low voltage disconnect threshold.
• Overheating: Ensure adequate ventilation around the controller. Check if the cooling fans are operating correctly when the unit is warm.
• Error Codes: Refer to the LCD display for specific error codes. Consult the detailed manual or contact support for interpretation.

9. Specifications

10. Warranty and Support

OOYCYOO provides a worry-free after-sales guarantee for this product. If you have any questions or require assistance with your MPPT solar charge controller, please do not hesitate to contact us via email. Our support team is committed to providing prompt assistance.

For technical support or warranty claims, please refer to the contact information provided with your purchase or visit the official OOYCYOO website.