DATOUBOSS DT4811B 11KW Hybrid Solar Inverter User Manual

1. Introduction

This manual provides essential information for the assembly, installation, operation, and troubleshooting of your DATOUBOSS Hybrid Solar Inverter. Please read it thoroughly before installation and keep it for future reference.

1.1 Purpose and Scope

This inverter/charger combines the functions of an inverter, solar charger, and battery charger to provide uninterrupted power support. It features a comprehensive LCD display for user-configurable settings such as battery charging current, AC/solar charger priority, and acceptable input voltage ranges for various applications.

1.2 Key Features

• Pure sine wave output.
• Configurable input voltage range for home appliances and personal computers.
• Adjustable battery charging current based on application needs.
• Configurable AC/Solar Charger priority.
• Compatible with mains voltage or generator power.
• Automatic restart when AC recovers.
• Overload, over-temperature, and short circuit protection.
• Smart battery charger design for optimized battery performance.
• Cold start function.
• Optional WiFi module for convenient real-time monitoring and remote control.
• Certifications: CE, FCC, PSE.

2. Safety Instructions

WARNING: This chapter contains important safety and operating instructions. Read and keep this manual for future reference.

1. Before using the unit, read all instructions and cautionary markings on the unit, batteries, and all appropriate sections of this manual.
2. CAUTION: To reduce the risk of injury, charge only deep-cycle lead acid type rechargeable batteries. Other types of batteries may burst, causing personal injury and damage.
3. Do not disassemble the unit. Take it to a qualified service center when service or repair is required. Incorrect re-assembly may result in a risk of electric shock or fire.
4. To reduce the risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning. Turning off the unit will not reduce this risk.
5. CAUTION: Only qualified personnel can install this device with a battery.
6. NEVER charge a frozen battery.
7. For optimum operation, follow required specifications to select appropriate cable sizes.
8. Be cautious when working with metal tools on or around batteries to prevent short circuits or explosions.
9. Strictly follow installation procedures when disconnecting AC or DC terminals.
10. A 150A fuse is provided for over-current protection for the battery supply.
11. GROUNDING INSTRUCTIONS: This inverter/charger must be connected to a permanent grounded wiring system. Comply with local requirements.
12. NEVER cause AC output and DC input short circuits. Do NOT connect to the mains when DC input short circuits.
13. Warning: Only qualified service persons are able to service this device.

Diagram illustrating the inverter's 360-degree protection features, including Short Circuit, Over-Load, Over Current, High Voltage, Over Voltage, Over-Temperature, Under Voltage, and Over Charge protection.

3. Setup and Installation

3.1 Unpacking and Inspection

Before installation, inspect the unit for any damage. Ensure all items are present: the inverter unit and the user manual. For specific models, additional accessories like communication cables and mounting hardware may be included.

3.2 Mounting the Unit

Consider the following when selecting an installation location:

• Do not mount the inverter on flammable materials.
• Mount on a solid, vertical surface at eye level for easy LCD reading.
• Allow a clearance of approximately 20 cm to the sides and 50 cm above and below for proper air circulation and heat dissipation.
• The ambient temperature should be between -10°C and 50°C for optimal operation.
• Install using three screws: two M6*80mm expansion bolts and one M4 or M5 screw.

Image showing the dimensions of the inverter (55cm/21.7in length, 47cm/18.5in width, 14.5cm/5.7in height) and included accessories such as the user manual, cables, and mounting hardware.

3.3 Wiring Connections

General System Connection Diagram:

Diagram illustrating the overall system connection, including PV panels, generator, mains, the inverter, an external battery pack, and various home appliances.

3.3.1 Battery Connection

WARNING: All wiring must be performed by qualified personnel. Use appropriate cable for battery connection to ensure safety and efficient operation. A separate DC over-current protector or disconnect device between the battery and inverter is recommended.

Recommended Battery Cable and Terminal Size:

WARNING: Shock Hazard. Installation must be performed with care due to high battery voltage in series. Ensure correct polarity and tight connections.

3.3.2 AC Input/Output Connection

CAUTION: Install a separate AC breaker between the inverter and the AC input power source. The recommended breaker specification is 32A for 3KW and 50A for 5KW models. Do not mis-connect input and output connectors.

Recommended AC Input and Output Cable Size:

3.3.3 PV Connection

CAUTION: Install a separate DC circuit breaker between the inverter and PV modules. Ensure correct polarity and tight connections for PV module wiring.

Recommended PV Module Cable Size:

When choosing PV modules, ensure the open circuit voltage (Voc) does not exceed the maximum PV array open circuit voltage of the inverter (500Vdc for 11KW model). The maximum supply voltage of the PV modules should be close to the optimal PV access voltage range (300-400Vdc for 11KW model) for best performance. If one PV module cannot meet this requirement, connect multiple PV modules in series.

3.3.4 Communication Connection

The inverter supports various communication options:

• PC Connection: Use the supplied communication cable to connect to a PC and install monitoring software.
• Wi-Fi Cloud Communication (Optional): Connect a Wi-Fi module and use the dedicated mobile app for remote monitoring.
• GPRS Cloud Communication (Optional): Connect a GPRS module and use the dedicated mobile app for remote monitoring.

3.4 Parallel Function (for multiple inverters)

This inverter supports parallel operation in two modes:

1. Parallel operation in single phase with up to 9 units (e.g., 27KW/27KVA for 3KW models, 45KW/45KVA for 5KW models).
2. Three-phase equipment support with up to 9 units (e.g., 21KW/21KVA for 3KW models per phase, 35KW/35KVA for 5KW models per phase).

NOTE: Ensure all output Neutral wires of each inverter are connected together. Do not connect current sharing cables between inverters in different phases.

Wiring diagrams for parallel power connections, showing configurations for three inverters in each phase and six inverters in parallel, with PV, utility, battery packs, and load connections.

4. Operation

4.1 Power On/Off

Once the unit is properly installed and batteries are connected, press the On/Off switch (located on the bottom of the case) to turn on the unit.

• Mains Power On: Connect to normal AC power, press the switch. The system will automatically turn on. If AC output priority is set, the panel will display AC mode.
• Battery Boot: Connect to battery, press the power-on button. The system will automatically turn on. The panel will display battery mode.
• Shutdown: In battery mode or AC mode output, press the switch again to turn off the system.

4.2 LCD Display and Control Panel

The front panel features an LCD display, three indicators (AC/INV, CHG, FAULT), and four function keys (ESC, UP, DOWN, ENTER) to monitor and configure the inverter.

Detailed view of the inverter's appearance, labeling the LCD display, indicators, control buttons, and all input/output ports on the rear panel, including AC input, main output, second output, BMS/RS485, Dry Contact, Power ON/OFF, Fan, Solar Panel Input, Parallel connection, Battery Input, and RS232.

LED Indicators:

• AC/INV (Green): Solid On (Output powered by utility in Line mode), Flashing (Output powered by battery or PV in battery mode).
• CHG (Green): Solid On (Battery fully charged), Flashing (Battery is charging).
• FAULT (Red): Solid On (Fault occurs), Flashing (Warning condition occurs).

Function Keys:

• ESC: To exit setting mode.
• UP: To go to previous selection.
• DOWN: To go to next selection.
• ENTER: To confirm selection or enter setting mode.

4.3 Operating Modes

Diagram illustrating the four AC Output Modes (Utility Priority, Solar and Utility Hybrid, Solar Priority, Inverter Priority) and four Battery Charging Modes (Hybrid Charging, Utility Priority, Solar Priority, Only Solar).

4.3.1 Battery-Free Operation

The inverter supports battery-free operation, allowing for flexible configuration and reduced system costs.

Illustration showing the inverter connected to a generator, utility, and solar power, directly supplying various household appliances without a battery.

4.4 LCD Settings

Press and hold the ENTER button for 3 seconds to enter setting mode. Use UP/DOWN to navigate and ENTER to confirm.

• Program 01 (Output source priority): Set priority for solar energy, utility, or a hybrid.
• Program 02 (Maximum charging current): Configure total charging current for solar and utility chargers (10A to 100A).
• Program 03 (AC input voltage range): Set acceptable AC input voltage range for appliances (90-280VAC) or UPS (170-280VAC).
• Program 05 (Battery type): Select AGM, Flooded, or User-Defined.
• Program 04 (AC output mode): Set for single or parallel operation (Single, Parallel, L1/L2/L3 phase).
• Battery Equalization: Programs 30-36 control battery equalization settings, including voltage, time, and interval.

5. Maintenance

To ensure optimal performance and longevity of your inverter, regular maintenance is recommended:

• Keep the inverter clean and free from dust and debris.
• Periodically check all wiring connections for tightness and signs of wear.
• Ensure proper ventilation around the unit to prevent overheating.
• Monitor the LCD display for any warning or fault indicators.

6. Troubleshooting

This section provides solutions for common problems. Refer to the LCD display for fault and warning codes.

6.1 Fault Codes and Solutions

6.2 Warning Indicators

Warning codes indicate conditions that do not stop inverter operation but require attention.

7. Specifications

The DATOUBOSS DT4811B Hybrid Solar Inverter offers robust performance for various solar applications.

Detailed table of product parameters for model DT4811B, including input, output, battery, charger, display, environmental, and physical specifications.

Images showing the front, side, and bottom views of the inverter, highlighting its dimensions and labeled interfaces.

7.1 General Specifications (Model DT4811B / 11KW)

• Output Power Rating: 11KW
• Peak Power: 22KW
• Input Voltage: 220/230/240VAC (Normal Mode), 170-280VAC (UPS Mode)
• Output Voltage: AC 220V±10%
• Output Frequency: 50Hz/60Hz (Auto Adaptive)
• Waveform: Pure Sine Wave
• Battery Voltage: 48Vdc
• Max PV Input Voltage: 500Vdc
• Max PV Charging Current: 150A
• Max AC Charging Current: 150A
• Conversion Efficiency: >98% (Peak Efficiency, battery mode)
• Dimensions (DxWxH): 55cm x 47cm x 14.5cm (21.7in x 18.5in x 5.7in)
• Weight: 19.1kg
• Operating Ambient Temperature: -10°C to 50°C
• Operating Ambient Humidity: 20%~95% (Non-condensing)
• Certification: CE, FCC, RoHS, WEEE

For a more detailed technical datasheet, please refer to the official PDF user manual available at: DATOUBOSS Hybrid Solar Inverter User Manual (PDF).

8. User Tips

• Battery Type: This inverter is designed for deep-cycle lead acid type rechargeable batteries. Ensure you use compatible batteries for optimal performance and safety.
• WiFi Monitoring: For convenient real-time monitoring of the inverter's status and parameters, consider utilizing the optional WiFi module. This allows for remote management without distance limitations.
• Power Configuration: Adjust the priority settings for mains and photovoltaic power according to your specific energy needs and local regulations to optimize efficiency.

9. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your DATOUBOSS dealer or the authorized service center. Keep your purchase records for any warranty claims.

10. Frequently Asked Questions (FAQ)

Q: What type of batteries does this inverter require?

A: This inverter is designed to work with deep-cycle lead acid type rechargeable batteries. Using other types may pose risks.

Q: Does this inverter support Wi-Fi connectivity?

A: Yes, an optional Wi-Fi module is available for convenient real-time monitoring of the hybrid inverter's function status and parameters.

Q: Can I adjust the power configuration?

A: Yes, you can set the priority of mains and photovoltaic power, and adjust the power configuration according to your actual situation via the LCD settings.

Q: What certifications does this product have?

A: This product has CE, FCC, and PSE certifications, ensuring high quality and compliance with safety standards.