1. Introduction and Overview
The Sako SUNON-ECO Hybrid Solar Inverter is a versatile power solution designed for both on-grid and off-grid applications. It integrates a pure sine wave inverter, an MPPT solar charge controller, and a battery charger into one compact unit, offering an uninterruptible power supply. This manual provides essential information for the safe and efficient operation of your inverter.
Image: The Sako SUNON-ECO Hybrid Solar Inverter, designed for seamless integration into residential solar power systems.
2. Key Features
The SUNON-ECO inverter boasts several advanced features for optimal performance and user convenience:
- High Frequency Dual MPPT: Built-in 120/160A MPPT controller for up to 95% solar cell module conversion efficiency.
- Multifunctional Use: Operates with or without a battery, supporting solar direct load for cost savings. Suitable for high electricity consumption during the day.
- On/Off Grid Support: Seamlessly switches between on-grid and off-grid modes.
- Safety and Compatibility: Features overload, short circuit, overvoltage, undervoltage, and overtemperature protection. Compatible with AC/DC inputs, including diesel generators.
- Smart Monitoring: Built-in WiFi for remote monitoring via mobile app. USB/RS232/GPRS communication ports for computer connection.
- User-Configurable Settings: LCD screen allows setting DC/AC input priority, battery type, and charging current.
- High PV Input Voltage Range: Supports a wide PV input voltage range of 90-450VDC.
- Dual AC Output: Provides two independent AC outputs for flexible load management.
Image: Overview of the inverter's main features and a typical solar system connection diagram.
3. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your Sako SUNON-ECO inverter. Always ensure power is disconnected before making any connections.
3.1 Physical Installation
Mount the inverter in a well-ventilated area, away from direct sunlight, heat sources, and flammable materials. Ensure sufficient clearance around the unit for proper airflow.
Image: Angled view of the inverter, showing its compact design suitable for wall mounting.
3.2 Electrical Connections
Refer to the diagram below for correct electrical connections. Ensure all connections are secure and comply with local electrical codes.
- AC Input: Connect the utility grid or generator AC power.
- AC Output: Connect your household loads. The inverter supports dual AC outputs.
- Battery Connection: Connect the positive and negative terminals of your battery bank (24V or 48V DC, depending on model).
- PV Input: Connect your solar panel array to the PV input terminals. Observe the maximum PV input voltage (Max. 500VDC).
- Grounding: Always connect the inverter to a proper earth ground.
Image: Detailed view of the inverter's rear panel, highlighting AC input, AC output, battery, and PV connection points.
WARNING: High Voltage! Ensure all power sources are disconnected before making or breaking any electrical connections.
Image: Examples of various installation setups for Sako inverters, demonstrating typical deployment scenarios.
4. Operating Instructions
Once installed, the Sako SUNON-ECO inverter offers flexible operating modes to suit your energy needs.
4.1 Powering On/Off
- Ensure all connections are secure.
- Turn on the battery breaker (if applicable).
- Turn on the AC input breaker.
- Press and hold the power button on the inverter's front panel until the LCD screen illuminates.
- To power off, reverse the steps, ensuring to turn off the AC input and battery breakers first.
4.2 LCD Display and Settings
The LCD screen provides real-time operational data and allows for configuration of various parameters. Use the navigation buttons to browse menus and adjust settings such as:
- AC/Solar Charging Priority
- Battery Type (GEL, AGM, Lithium)
- Charging Current
- Output Source Priority (Utility, Solar, Battery)
4.3 Charging Modes
The inverter supports four distinct charging modes:
- Solar Charging: Prioritizes solar power for charging batteries.
- Electricity Utility Priority: Uses utility power as the primary source, with solar as backup.
- Solar Priority: Prioritizes solar power for both charging and supplying loads.
- Hybrid Charging: Combines solar and utility power for optimal charging.
Image: Visual representation of the four user-configurable charging modes, allowing flexible power management.
4.4 Smart Monitoring via App
Monitor and control your inverter remotely using the dedicated mobile application. The app provides real-time monitoring, parametric analysis, and warning messages.
Image: A smartphone screen showing the Sako inverter's smart app, enabling remote monitoring and control.
4.5 Day and Night Operation
The inverter intelligently manages power flow. During the day, solar panels charge batteries and power loads. At night, stored battery power or utility power is used.
Image: Diagram illustrating the inverter's operational cycle, with daytime charging from solar and nighttime discharge to power the home.
4.6 Product Video Overview
Watch this official product video for a visual overview of the Sako SUNON-ECO Hybrid Solar Inverter's features and design.
Video: A comprehensive overview of the Sako SUNON-ECO Hybrid Solar Inverter, showcasing its design and key functionalities.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter.
- Cleaning: Periodically clean the exterior of the inverter with a dry, soft cloth. Ensure ventilation openings are free from dust and debris.
- Connection Checks: Annually inspect all electrical connections (AC input/output, battery, PV) for tightness and signs of corrosion.
- Environmental Check: Ensure the installation environment remains within specified temperature and humidity ranges.
- Battery Health: If using batteries, monitor their health and perform maintenance as recommended by the battery manufacturer.
6. Troubleshooting
This section provides guidance for common issues. For complex problems, contact qualified service personnel.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not powering on | No AC input; Battery disconnected/low voltage; Input breaker tripped | Check AC input power; Verify battery connections and voltage; Reset input breaker. |
| No AC output | Overload; Short circuit; Over-temperature; Output breaker tripped | Reduce load; Check for short circuits; Allow inverter to cool; Reset output breaker. |
| Battery not charging | PV input too low/disconnected; Charging current setting too low; Battery fault | Check PV connections and sunlight; Adjust charging current via LCD; Inspect battery. |
| Inverter displaying error code | Internal fault; Specific system issue | Refer to the inverter's LCD display for specific error codes and consult the detailed troubleshooting guide in the full manual (if available) or contact support. |
The inverter includes built-in protections against overload, short circuit, overvoltage, undervoltage, and overtemperature to ensure safe operation.
7. Specifications
Detailed technical specifications for the Sako SUNON-ECO Hybrid Solar Inverter (4.2KW/24V model).
7.1 General Specifications
| Parameter | Value (4.2KW/24V Model) |
|---|---|
| Max. PV Power | 6200W |
| Rated Power | 4200VA/4200W |
| Max. Charge Current | 120A |
| Battery Voltage | 24VDC |
| Floating Charge Voltage | 27VDC |
| Overcharge Protection | 33VDC |
| Battery Type Compatibility | GEL, AGM, Lithium Battery |
| Grid Input Voltage Range | 170-280VAC (For Personal Computers); 90-280 VAC (For Home Appliances) |
| Frequency Range | 50 Hz/60 Hz (Auto sensing) |
| Efficiency (AC Mode) | 98% |
Image: Technical specifications table covering battery and grid input parameters for different SUNON-ECO models.
7.2 AC Output & Solar Charger Specifications
| Parameter | Value (4.2KW/24V Model) |
|---|---|
| AC Voltage Regulation (Batt. Mode) | 230 VAC ± 5% |
| Surge Power | 8400VA |
| Efficiency (Peak) | 90%–94% |
| Transfer Time | 15 ms (For Personal Computers); 20 ms (For Home Appliances) |
| Waveform | Pure sine wave |
| Full Load (Dual Loads AC Output) | 4200W |
| Maximum Main Load | 4200W |
| Maximum Second Load (Battery Mode) | 1200W |
| Solar Charger Type | MPPT |
| Maximum PV Array Power | 6200W |
| Max. Input Current | 27A |
| MPPT Range @ Operating Voltage | 90–450VDC |
| Maximum PV Array Open Circuit Voltage | 500 VDC |
| Maximum Solar Charge Current | 120A |
| Maximum AC Charge Current | 100A |
| Maximum Charge Current | 120A |
Image: Technical specifications table detailing AC output and solar charger parameters for the inverter.
7.3 Physical & Environmental Specifications
| Parameter | Value (4.2KW/24V Model) |
|---|---|
| Packing Dimension (DXWXH) | 543*394*204 mm |
| Net Weight | 9.8 kgs |
| Communication Interface | USB/RS232/WiFi/GPRS |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |
Image: Technical specifications table detailing physical dimensions and operating environment conditions.
8. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact Sako customer service directly. Ensure you have your product model number (SUNON-ECO) and serial number ready when seeking support.
Manufacturer: SAKO
Date First Available: 15 November 2024
