Sako Sunon Pro 5.5kW 100A MPPT Pure Sine Wave Off-Grid Inverter

1. Introduction

The Sako Sunon Pro 5.5kW 100A MPPT Pure Sine Wave Off-Grid Inverter is a versatile power solution that combines the functions of an inverter, MPPT solar charger, and battery charger to offer uninterruptible power support in a compact package. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your inverter.

Figure 1: Front view of the Sako Sunon Pro Inverter

2. Safety Precautions

• Read all instructions and cautionary markings on the unit and in this manual before installation and operation.
• This unit is designed for indoor use only. Do not expose it to rain, snow, or any type of liquid.
• Ensure proper ventilation. Do not install the inverter in a confined space.
• All wiring must be performed by qualified personnel.
• Before any wiring or maintenance, ensure all power sources (PV, AC, Battery) are disconnected.
• Use appropriate overcurrent protection for all circuits.

3. Setup and Installation

3.1 Unpacking and Inspection

Upon unpacking, inspect the unit for any damage. Ensure all components are present. If any damage or missing parts are found, contact your supplier immediately.

3.2 Mounting the Unit

The inverter is designed for wall mounting. Choose a location that is dry, well-ventilated, and away from direct sunlight or heat sources. Ensure there is sufficient clearance around the unit for proper airflow.

Figure 2: Side view illustrating mounting points

3.3 Wiring Connections

Refer to the system wiring diagram below for correct connections. All connections must be secure and properly insulated.

Figure 3: Typical System Wiring Diagram

• Battery Connection: Connect the battery bank (Lead Acid or Lithium, 48V DC) to the designated battery terminals. Ensure correct polarity.
• PV Input: Connect your solar panels to the PV input terminals. The inverter supports a maximum PV input voltage of 500V. Observe correct polarity for PV+ and PV-.
• AC Input: Connect the AC utility grid or a generator (230VAC) to the AC input terminals. An input breaker (230VAC) is integrated for protection.
• AC Output: Connect your loads (e.g., computer/TV, high-power appliances, household appliances) to the AC output terminals.

Figure 4: Rear Panel Connections and Specifications

4. Operating Instructions

4.1 Powering On/Off

Once all connections are verified and secure, locate the ON/OFF switch on the side of the inverter. Switch it to the 'ON' position to power up the unit. To power off, switch it to the 'OFF' position and disconnect all power sources.

4.2 Front Panel Display and Buttons

The front panel features an LCD display and several buttons for monitoring system status and configuring settings. The display provides real-time information on input voltage, output voltage, battery status, and charging/discharging currents. Use the buttons to navigate through menus and adjust parameters as needed.

4.3 Operating Modes

The inverter typically supports various operating modes, such as:

• Solar Priority: Utilizes solar power as the primary source, switching to utility/battery when solar is insufficient.
• Utility Priority: Uses utility power as the primary source, switching to solar/battery during outages.
• Battery Priority: Discharges batteries first, then switches to solar/utility.

Refer to the on-screen menu for specific mode selection and configuration options.

5. Maintenance

Regular maintenance ensures optimal performance and longevity of your inverter.

• Cleaning: Periodically clean the exterior of the inverter and ensure ventilation openings are free from dust and debris. Use a dry cloth.
• Connection Checks: Annually inspect all wiring connections for tightness and signs of corrosion. Re-tighten if necessary.
• Battery Inspection: If using lead-acid batteries, check electrolyte levels and terminal cleanliness as per battery manufacturer guidelines. For lithium batteries, monitor their state of charge and health via the inverter's display.
• Environmental Check: Ensure the installation environment remains within specified temperature and humidity ranges.

6. Troubleshooting

If the inverter is not functioning as expected, perform the following basic checks before contacting support:

• No Power: Verify that the ON/OFF switch is in the 'ON' position. Check all input power sources (PV, AC, Battery) for proper connection and voltage. Inspect any external fuses or breakers.
• No AC Output: Check if the inverter is displaying any error codes. Ensure the load is not exceeding the inverter's rated capacity (5.5kW). Verify AC output wiring.
• Battery Not Charging: Check PV input voltage and current. Ensure solar panels are clean and unobstructed. Verify battery connections.
• Error Codes: If an error code appears on the display, consult the inverter's detailed error code list (usually found in a more comprehensive manual or online resources) for specific actions.

7. Specifications

8. User Tips

• Optimize Solar Panel Placement: Ensure your solar panels are angled correctly for maximum sun exposure throughout the day and year.
• Battery Management: For optimal battery life, avoid consistently deep discharging your batteries. Monitor battery health through the inverter's display.
• Load Management: Be mindful of the total power consumption of your appliances to stay within the inverter's 5.5kW capacity. Avoid overloading the system.
• Regular Monitoring: Periodically check the inverter's display for any warnings or unusual readings to catch potential issues early.

9. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your original seller or authorized distributor. Keep your purchase receipt as proof of purchase.