1. Introduction
This manual provides essential information for the safe and efficient operation of your SAKO SUNON PRO Hybrid MPPT Solar Inverter. Designed for off-grid solar power systems, this inverter combines a pure sine wave inverter with a 100A MPPT solar charge controller and a battery charger, offering a comprehensive power solution. Please read this manual thoroughly before installation and use.
2. Key Features
- Pure Sine Wave output for sensitive electronics.
- Integrated 100A MPPT Solar Charge Controller for efficient solar power harvesting.
- Touch Button LCD display for easy configuration and monitoring.
- Output Power Factor of 1.0, ensuring full utilization of rated power.
- Flexible operation with or without a battery.
- Optional WIFI function for remote monitoring.
- Wide PV input voltage range (120-500VDC).
- Smart battery charger and management system for optimized battery performance and longevity.
- Cold Start function for reliable operation in various conditions.
- Automatic restart upon AC recovery.
- Compatible with LiFePO4 batteries.
3. Specifications
| Feature | SUNON PRO 3.5K | SUNON PRO 5.5K |
|---|---|---|
| Rated Power | 3500VA/3500W | 5500VA/5500W |
| Input Voltage | 230VAC | |
| Selectable Voltage Range | 170-280VAC (UPS), 90-280VAC (Appliances) | |
| Frequency Range | 50Hz/60Hz (Auto sensing) | |
| Output Voltage | AC220VAC | |
| Output Current | 16A | Not specified (typically higher) |
| Output Type | Single, DUAL | |
| Dimensions (L*W*H) | 481mm*313mm*117mm | |
| Inverter Efficiency | > 98% | |
| AC Efficiency | > 98% | |
| DC Voltage | 24VDC | |
| Solar Charge Controller | 100A MPPT | |
| PV Input Voltage Range | 120-500VDC | |
| Charge Current | Selectable via LCD setting | |
| Certifications | CE, RoHS | |
| Warranty | 1 Year | |
4. Product Overview
Familiarize yourself with the components and connection points of your SAKO SUNON PRO inverter.
- RS-232 Communication Port: For serial communication with external devices.
- USB Communication Port: For data transfer and monitoring.
- Power On/Off Switch: Controls the main power to the inverter.
- LCD Display: Shows operational status, settings, and error messages.
- Status Indicator: LED indicating the current operational status.
- Charging Indicator: LED indicating battery charging status.
- Fault Indicator: LED indicating system faults or errors.
- Touch Buttons: For navigating menus and adjusting settings on the LCD.
- AC Output: Connects to household appliances and loads.
- AC Input: Connects to grid power or a generator.
- Circuit Breaker: Provides overcurrent protection.
- Battery Input: Connects to the battery bank (Lead Acid / Lithium Battery).
- PV Input: Connects to solar panels (e.g., 450W/39V Solar Panel).
5. Installation and Connection
Proper installation is crucial for the safe and efficient operation of your solar inverter. It is recommended that installation be performed by a qualified professional.
5.1 Safety Precautions
- Ensure all power sources are disconnected before installation.
- Wear appropriate personal protective equipment (PPE).
- Verify correct polarity for all DC connections.
- Ensure adequate ventilation around the inverter to prevent overheating.
- Mount the inverter in a dry, cool, and well-ventilated area, away from flammable materials.
5.2 System Connection Diagram
The following diagram illustrates a typical solar system connection for the SAKO SUNON PRO inverter.
5.3 Connection Steps
- Mounting: Securely mount the inverter to a vertical surface in a suitable location.
- Battery Connection: Connect the battery bank (Lead Acid or Lithium Battery) to the Battery Input terminals, ensuring correct polarity.
- Solar Panel (PV) Connection: Connect your solar panels (e.g., 450W/39V) to the PV Input terminals. Ensure the PV input voltage is within the specified range (120-500VDC).
- AC Input Connection: Connect the AC power source (grid or generator) to the AC Input terminals.
- AC Output Connection: Connect your appliances (e.g., computer/TV, high-power appliances, household appliances) to the AC Output terminals.
- Communication Connections (Optional): Connect RS-232 or USB cables for monitoring or external control if desired.
- Initial Power-Up: Once all connections are secure, switch on the battery breaker first, then the AC input breaker (if applicable), and finally the inverter's power on/off switch.
5.4 Installation Examples
Observe various installation setups for reference.
6. Operation
6.1 LCD Display and Touch Buttons
The LCD display provides real-time information about the inverter's status, input/output voltages, battery charge level, and fault codes. Use the touch buttons located below the display to navigate through menus and adjust settings such as:
- Operating Mode (e.g., UPS, Appliance)
- Charge Current (selectable via LCD setting)
- Output Frequency (50Hz/60Hz)
- Battery Type
- System Priority (Solar, Utility, Battery)
6.2 Cold Start Function
The inverter supports a cold start function, allowing it to power on directly from the battery even without an AC input or solar input, useful in emergency situations or initial setup in off-grid environments.
6.3 Auto Restart
The inverter is designed to automatically restart when AC power is restored after a power outage, ensuring continuous operation of connected loads.
6.4 WIFI Function (Optional)
If your inverter is equipped with the optional WIFI module, you can monitor and control your system remotely via a dedicated mobile application. Refer to the separate WIFI module manual for setup instructions.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your SAKO SUNON PRO inverter.
- Cleaning: Keep the inverter's exterior clean and free from dust. Use a dry cloth; do not use liquid cleaners.
- Ventilation: Ensure that the ventilation openings are not blocked. Clear any dust or debris that may accumulate in the vents.
- Connection Checks: Periodically inspect all electrical connections (battery, solar, AC input/output) for tightness and signs of corrosion or damage.
- Battery Health: Monitor battery health and charge levels via the LCD display or optional WIFI. Follow battery manufacturer guidelines for maintenance.
- Environment: Ensure the inverter is operating within its specified environmental conditions (temperature, humidity).
8. Troubleshooting
If the inverter is not functioning correctly, check the following common issues before contacting support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning on | No battery connection, low battery voltage, power switch off. | Check battery connections and voltage. Ensure power switch is ON. |
| No AC output | Overload, short circuit, fault indicator active, AC output breaker tripped. | Reduce load. Check for short circuits. Reset AC output breaker. Check LCD for fault codes. |
| Battery not charging from solar | No solar input, PV voltage too low/high, solar panels shaded, MPPT controller fault. | Check solar panel connections. Ensure panels are receiving sunlight. Verify PV voltage on LCD. |
| Fault indicator active | Internal fault, over-temperature, over-voltage, under-voltage. | Note the fault code on the LCD. Refer to the full manual (if available) for specific codes. Power cycle the inverter. Ensure proper ventilation. |
For complex issues or persistent problems, please contact customer support.
9. User Tips
- Professional Installation: While the inverter is user-friendly, professional installation is highly recommended to ensure safety and optimal system performance.
- Monitor Performance: Regularly check the LCD display for system status and performance. Consider using the optional WIFI module for convenient remote monitoring.
- Battery Compatibility: The inverter is compatible with LiFePO4 batteries, which are known for their long cycle life and stability. Ensure your battery settings are correctly configured for your battery type.
- Warranty Support: In case of issues within the 1-year warranty period, the manufacturer offers free replacements for parts without requiring the return of the entire unit to China, simplifying the support process.
10. Warranty and Support
10.1 Product Warranty
The SAKO SUNON PRO Hybrid MPPT Solar Inverter comes with a 1-year warranty from the date of purchase. During this period, the manufacturer will provide free replacements for parts if any issues arise, without the need to return the entire product to the country of origin. After the warranty period, support will still be offered, but component costs will apply.
10.2 Technical Support
For any technical assistance, installation queries, or after-sales service, SAKO provides 24-hour online support. You can reach out via email or WhatsApp for prompt assistance.
WhatsApp Support: +8618874778827
11. Certifications
The SAKO SUNON PRO Hybrid MPPT Solar Inverter is certified to meet international quality and safety standards, including CE and RoHS.
