Y&H 60A 120A MPPT Solar Charge Controller User Manual

1. Introduction

The Y&H MPPT Solar Charge Controller is designed for use in solar off-grid power generation systems. It automatically regulates battery charging and discharging, ensuring optimal performance and longevity of your solar system. Featuring an advanced Maximum Power Point Tracking (MPPT) algorithm, it efficiently extracts maximum power from solar modules to charge batteries. Its integrated Low Voltage Disconnect (LVD) function prevents battery over-discharge, protecting your battery investment. The controller includes comprehensive self-test and electronic protection functions to prevent damage from installation errors and system failures.

2. Key Features

• Maximum Power Point Tracking (MPPT) Technology: Significantly improves energy utilization of the solar energy system with a conversion efficiency of up to 97%.
• Wide Battery Voltage Compatibility: Supports 12V, 24V, 36V, 48V, 60V, 72V, 84V, and 96V battery systems.
• Multiple Battery Type Settings: Compatible with Lead Acid, Gel, LifePo4, Li-ion, and user-defined battery types.
• High PV Open Circuit Voltage: Supports PV input from 0V up to 230V.
• Adjustable Charging Current: Charging current (A) can be adjusted to suit specific battery requirements.
• Automatic Temperature Compensation: Charging voltage and current are automatically compensated based on battery temperature to prolong battery life.
• Broad High Voltage Range: The 12V battery system can withstand up to 230V PV input, offering significant advantages over controllers limited to 45V or 150V.
• Minimum PV Input Requirement: PV minimum input voltage should be approximately 1.5-2 times the battery voltage (e.g., for a 12V battery, minimum input is 18V-24V VOC).

3. Technical Specifications

The following table details the technical specifications for both the 60A and 120A models:

4. Product Overview and Components

The Y&H MPPT Solar Charge Controller features a robust design with clearly labeled connection points and an intelligent cooling system.

4.1. LCD Main Interface Description

The LCD provides real-time information about your solar system's performance. The main interface displays the following:

1. Solar panels indicator
2. Solar input voltage
3. Controller charging current
4. Controller charging voltage
5. Battery indicator
6. System status indication
7. Controller power generation wattage
8. Controller total power generation

5. Setup and Installation

Proper installation is crucial for the safe and efficient operation of your solar charge controller. Follow these steps carefully:

1. Connect Temperature Sensor: Connect the temperature sensor to the designated 'TEMP' port (labeled 1 in Figure 6). This allows for accurate temperature compensation.
2. Connect Solar Panels: Connect the positive (+) and negative (-) poles of your solar panel array to the 'SOLAR PANEL' terminals (labeled 2 in Figure 6). Ensure correct polarity.
3. Connect Battery: Connect the positive (+) and negative (-) terminals of your battery bank to the 'BATTERY' terminals (labeled 3 in Figure 6). Ensure correct polarity.
4. Connect RS485 Communication Line (Optional): If using for monitoring or advanced settings, connect the RS485 communication line to the 'RS485' port (labeled 4 in Figure 6).

Important Notes for Installation:

• Wiring Sequence: Always connect the battery first, then the solar panels. Disconnect in reverse order.
• PV Input Voltage: The solar panel input voltage must be greater than the maximum battery voltage by at least 20V. The maximum PV open circuit voltage should not exceed 230V.
• Lead-Acid Batteries: For 60V, 72V, and 84V lead-acid battery systems, the voltage needs to be adjusted manually in the controller settings.

6. Operating Instructions

6.1. Initial Power-Up

Once all connections are secure and correct, the controller will power on and display information on the LCD. It will automatically detect the battery voltage (for auto-detect battery types) and begin the charging process if solar input is available.

6.2. Battery Type Settings

The controller supports various battery types. You can select the appropriate type through the LCD interface:

• Lead Acid: (12V/24V/36V/48V/96V Auto + 12V/24V/36V/48V/60V/72V/84V/96V Adjustable)
• Gel: 12V/24V/36V/48V/60V/72V/84V/96V
• LifePo4: Single voltage 3.2*number of strings (4-45 strings adjustable) Saturation voltage 3.65V
• Li-ion: Single voltage 3.7*number of strings (2-45 strings adjustable) Saturation voltage 4.2V
• USER: Allows for adjustable limit voltage for equal charge, float charge, and DC discharge (8V-170V).

Refer to the controller's menu system (accessed via touch buttons) to navigate and select your battery type. For Lead-acid batteries at 60V, 72V, or 84V, manual adjustment is required.

6.3. Charging Current Adjustment

The charging current can be adjusted via the controller's settings. This allows fine-tuning the charge rate to match your battery's specifications and desired charging speed. The adjustable range is 10-60A for the 60A model and 10-120A for the 120A model.

6.4. Direct Charging Current Output Function

The controller provides a direct DC continuous output of 60A (for 60A model) or 120A (for 120A model), which can be used to power DC loads directly from the battery, managed by the controller.

7. Maintenance

To ensure optimal performance and longevity of your Y&H MPPT Solar Charge Controller, regular maintenance is recommended:

• Cleanliness: Keep the controller clean and free from dust and debris. Use a dry cloth to wipe the exterior.
• Connections: Periodically check all wiring connections for tightness and corrosion. Loose connections can lead to power loss or overheating.
• Ventilation: Ensure the intelligent cooling fan and ventilation openings are not obstructed to allow for proper heat dissipation.
• Environmental Conditions: Operate the controller within the specified working environment temperature range (-20℃ to 40℃) and altitude (0-3000m).
• Battery Health: Monitor your battery's health and ensure it is compatible with the controller's settings.

8. Troubleshooting

The controller is equipped with multiple protection features to prevent damage. If you encounter issues, refer to the following:

• No Charging:
  - Check solar panel connections and ensure correct polarity.
  - Verify PV input voltage is above the minimum required (1.5-2 times battery voltage).
  - Check battery connections and ensure they are secure.
• Fault Alarm:
  - The controller has built-in fault alarms for various issues (e.g., over-current, over-load, over-voltage, under-voltage, over-charging, short-circuit, over-temperature). Refer to the LCD display for specific error codes or indicators.
  - Address the underlying cause of the alarm (e.g., reduce load, check wiring, allow cooling).
• Incorrect Voltage/Current Readings:
  - Ensure the temperature sensor is correctly connected for accurate temperature compensation.
  - Verify battery type settings match your installed battery.
• Controller Overheating:
  - Check if the intelligent cooling fan is operating correctly.
  - Ensure adequate ventilation around the controller.

If problems persist, contact customer support.

9. User Tips

• Battery Voltage Setting: For Lead-acid batteries operating at 60V, 72V, or 84V, remember to manually adjust the voltage setting in the controller's menu.
• PV Input Voltage: Always ensure your solar panel array's open circuit voltage (VOC) is within the 0-230V range and at least 1.5-2 times your battery voltage for optimal MPPT performance.
• Lithium Battery Activation: The controller can activate lithium batteries with photovoltaic input, allowing use even without a battery DC output initially.

10. Warranty and Support

The Y&H MPPT Solar Charge Controller comes with a 1-Year Warranty.

Y&H is committed to providing excellent service. If you are not satisfied with your MPPT solar controller or encounter any issues, please contact us via email. We are dedicated to providing timely responses and solutions to ensure your satisfaction.