1. Introduction
This manual describes the assembly, installation, operation, warning code, and fault code of this unit. Please read this manual carefully before installations and operations. Keep this manual for future reference.
1.1. Purpose and Scope
This manual provides safety and installation guidelines as well as information on tools and wiring.
1.2. Key Features
- Pure sine wave inverter
- Built-in MPPT solar charge controller
- Configurable input voltage range for home appliances and personal computers via LCD setting
- Configurable battery charging current based on applications via LCD setting
- Configurable AC/Solar Charger priority via LCD setting
- Compatible to mains voltage or generator power
- Auto restart while AC is recovering
- Overload / Over temperature / short circuit protection
- Inverter running without battery
- Lithium battery activation function
- Cold start function
- Parallel connection quantity up to 12 units for 6KVA and 12KVA models (Battery must be connected)
- Intelligent fan control greatly reduces fan noise
1.3. Basic System Architecture
The inverter/charger is designed to offer uninterruptible power support. A complete running system typically includes:
- The DATOUBOSS Hybrid Inverter
- PV modules (optional)
- Generator or Utility power source
This inverter can power various appliances in home or office environments, including motor-type appliances such as tube lights, fans, refrigerators, and air conditioners.
2. Safety Instructions
WARNING: This chapter contains important safety and operating instructions. Read and keep this manual for future reference.
- Before using the unit, read all instructions and cautionary markings on the unit, the batteries, and all appropriate sections of this manual.
- CAUTION: To reduce risk of injury, charge only deep-cycle lead acid type rechargeable batteries. Other types of batteries may burst, causing personal injury and damage.
- 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.
- To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning. Turning off the unit will not reduce this risk.
- CAUTION: Only qualified personnel can install this device with battery.
- NEVER charge a frozen battery.
- For optimum operation of this inverter/charger, please follow required specifications to select appropriate cable size. It's very important to correctly operate this inverter/charger.
- Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool to spark or short circuit batteries or other electrical parts and could cause an explosion.
- Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please refer to the INSTALLATION section of this manual for the details.
- Fuse is provided as over-current protection for the battery supply.
- GROUNDING INSTRUCTIONS: This inverter/charger should be connected to a permanent grounded wiring system. Be sure to comply with local requirements and regulations to install this inverter.
- NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input short circuits.
- WARNING: Only qualified service persons are able to service this device. If errors still persist after following troubleshooting table, please send this inverter/charger back to local dealer or service center for maintenance.
- WARNING: This series of off-grid inverters provides a backfeed function without grid-tie protection. If enabled, implement protective measures prior to operation. The customer assumes full liability for any accidents resulting from the use of this function.
2.1. Warning Marks
| Mark | Name | Instruction | Abbreviation |
|---|---|---|---|
| ⚠ | Danger | Serious physical injury or even death may occur if not following relevant requirements. | Danger |
| ⚠ | Warning | Physical injury or damage to the device may occur if not following relevant requirements. | Warning |
| ⚠ | Forbid (Electrostatic sensitive) | Damage may occur if relevant requirements are not followed. | Forbid |
| ⚠ | Hot temperature | Do not touch the base of the inverter as it will become hot. | Hot |
| i | Note | For procedures taken for ensuring proper operation. | Note |
3. Setup and Installation
3.1. Unpacking and Inspection
Upon receiving the inverter, carefully unpack the unit and inspect it for any damage that may have occurred during transit. Report any damage to the carrier immediately.
3.2. Product Overview and Connections
Familiarize yourself with the inverter's components and connection ports before installation.
Key Components and Ports:
- LCD display
- Charging indicator
- Fault or warning indicator
- Utility bypass/Inverter indicator
- ESC button
- UP button
- Down button
- Enter button
- Switch
- Parallel connection-CAN port
- PV input connection port
- AC output/Generator port
- AC input port
- Communication connection port
- Dry contact port
- Battery+ connection port
- Battery- connection port
3.3. BMS Communication Port Pin Definition
| NO. | BMS (4KVA) | BMS (6KVA/12KVA) | RS-232 |
|---|---|---|---|
| 1 | NC | RS485-B | RS232-TXD |
| 2 | NC | RS485-A | RS232-RXD |
| 3 | NC | VSS | VDD |
| 4 | NC | NC | VSS |
| 5 | NC | NC | NC |
| 6 | VSS | VSS | NC |
| 7 | RS485-A | RS485-A | NC |
| 8 | RS485-B | RS485-B | VSS |
3.4. Mounting the Unit
The inverter should be mounted in a location that complies with all safety guidelines, ensuring proper ventilation and protection from environmental factors. Refer to the full PDF manual for detailed mounting instructions.3.5. Wiring Connections
All wiring should be performed by qualified personnel, adhering to local electrical codes and regulations. Ensure all power sources are disconnected before making any connections.
- Battery Connection: Connect the battery bank to the designated Battery+ and Battery- terminals. Ensure correct polarity.
- AC Input/Output Connection: Connect the AC input from the utility grid or generator, and the AC output to your loads.
- PV Connection: Connect the solar PV modules to the PV input connection port. Observe maximum voltage and current ratings.
- Dry Contact Signal: Utilize the dry contact port for external control or monitoring signals as needed.
- Grounding: The inverter must be connected to a permanent grounded wiring system.
4. Operation
4.1. Power On/Off
Follow the specific power-on and power-off sequences outlined in the full manual to ensure safe operation and prevent damage to the unit or connected equipment.
4.2. LCD Display and Control Panel
The inverter features a comprehensive LCD display and control buttons for monitoring and configuration.
The LCD provides real-time information and allows users to configure various settings, including:
- Battery charging current
- AC/Solar charger priority
- Acceptable input voltage range
- Charging modes (AC power first, Solar priority, Solar power and AC power first, Solar only)
- Discharge modes (SUB Solar First, USB Utility First, SBU Battery First)
5. Specifications
The DATOUBOSS 48V 6000W Hybrid Inverter (Model DT4860BF) features robust specifications for reliable performance.
5.1. Line Mode Specifications
| Model | DT-4840BF | DT-4860BF | DT-48120BF |
|---|---|---|---|
| Rated Output Power | 4000VA/4000W | 6000VA/6000W | 12000VA/12000W |
| Nominal DC Input Voltage | 24V | 48V | 48V |
| Input Voltage Waveform | Sinusoidal (utility or generator) | ||
| Nominal Input Voltage | 230Vac | ||
| Low Line Voltage Disconnect | 90Vac±3V (for Home Appliances: APL) / 170Vac±3V (for Computers: UPS) | ||
| Low Loss Voltage Re-connect | 100Vac±3V (for Home Appliances: APL) / 180Vac±3V (for Computers: UPS) | ||
| High Line Voltage Disconnect | 280Vac±3V | ||
| High Line Voltage Re-connect | 270Vac±3V | ||
| Max AC Input Voltage | 280Vac±3V | ||
| Nominal Input Frequency | 50Hz/60Hz (Auto detection) | ||
| Low Line Frequency Disconnect | 40±1Hz | ||
| Low Line Frequency Re-connect | 42±1Hz | ||
| High Frequency Disconnect | 65±1Hz | ||
| High Frequency Re-connect | 63±1Hz | ||
| Output Voltage Waveform | As same as input waveform | ||
| Output Short Circuit Protection | Line mode: Circuit Breaker; Battery mode: Electronic Circuits | ||
| Efficiency (Line Mode) | >95% (Rated R load, battery full charged) | ||
| Transfer Time (Single unit) | 10ms typical (UPS); 20ms typical (Appliances) | ||
| Transfer Time (Parallel) | 50ms typical | ||
| Pass Through Without Battery | Yes | ||
| Max. Bypass Overload Current | 28A | 40A | 70A |
| Max. Bypass Input Current | 28A | 50A | 90A |
| Max. Inverter/Rectifier Current | 18.2A/4000W | 27.3A/6000W | 54.5A/12000W |
5.2. Utility Charge Mode Specifications
| Model | DT-4840BF | DT-4860BF | DT-48120BF |
|---|---|---|---|
| Nominal Input Voltage | 230Vac | ||
| Input Voltage Range | 90-280Vac | ||
| Nominal Output Voltage | Dependent on battery type | ||
| Max. Grid Charge Current | 100A | 120A | 210A |
| Charge Current Regulation | 10A-Max. Grid Charge Current (Adjustable unit is 1A) | ||
| Over Charge Protection | Yes | ||
| Grid charging Current (I.max/I.min) | 100A/25A | 120A/30A | 210A/50A |
5.3. Solar Charging & Grid Charging Specifications
| Parameter | Value |
|---|---|
| Max. PV Open Circuit Voltage | 500V |
| PV voltage range | 85V-450V |
| Max. Input Power (DT-4840BF / DT-4860BF / DT-48120BF) | 6000W / 8000W / 16000W |
| Max. Solar Charging Current (DT-4840BF / DT-4860BF / DT-48120BF) | 120A / 120A / 210A |
| Max. Charging Current (PV+Grid) (DT-4840BF / DT-4860BF / DT-48120BF) | 120A / 120A / 210A |
| Max. PV Input Current (DT-4840BF / DT-4860BF / DT-48120BF) | 15A / 27A / 27A+27A |
| Min. Startup Voltage (DT-4840BF / DT-4860BF / DT-48120BF) | 80V / 75V / 75V |
5.4. Charge Algorithm
The inverter uses a three-stage charging algorithm:
- Boost CC (Constant current stage)
- Boost CV (Constant voltage stage)
- Float FV (Constant voltage stage)
The adjustable time for each stage depends on the battery bank size, with a minimum of 1 hour and a maximum of 12 hours.
5.5. Battery Type Setting
| Battery Type | Boost CC/CV | Float |
|---|---|---|
| AGM | 28.2V/56.4V | 27V/54V |
| Flooded | 29.2V/58.4V | 27V/54V |
| Self-defined | Adjustable, up to 30V/60V | |
| Lithium | ||
6. Maintenance
Regular maintenance is crucial for the longevity and optimal performance of your DATOUBOSS Hybrid Inverter. Always disconnect all power sources before performing any maintenance or cleaning.
- Cleaning: Keep the inverter's exterior clean and free of dust. Use a dry cloth for cleaning. Do not use liquid cleaners.
- Ventilation: Ensure that the ventilation openings are clear and unobstructed to prevent overheating.
- Connection Checks: Periodically inspect all wiring connections for tightness and signs of corrosion.
- Battery Health: Monitor battery health and ensure they are within their recommended operating parameters.
The inverter is designed with an IP54 dustproof rating, offering professional protection for stable output in harsh outdoor environments.
7. Troubleshooting
The inverter is equipped with various protection features, including overvoltage, overload, short circuit, and surge protection with EMI filtering.
In case of a fault or warning, the LCD display will show relevant indicators. Refer to the full user manual for a detailed Warning Code Table and Fault Code Table to diagnose and resolve issues.
If errors persist after following the troubleshooting steps, please contact a qualified service center or your local dealer for assistance. Only qualified service personnel should attempt repairs.
8. User Tips
- Battery-Free Operation: This inverter supports battery-free operation, allowing direct conversion of photovoltaic (PV) power to AC power for loads. This can reduce initial investment and battery usage.
- Optimize PV Input: The inverter supports up to 8000W Max. PV Input Power and 27A Max. Solar Current, improving PV utilization efficiency.
- Flexible Upgrades: The system allows for adding batteries later to expand energy storage capacity and improve off-grid self-sufficiency.
- Multiple Scenarios: Suitable for various applications including RVs, outdoor camping, home use, yachts, agriculture, and emergency power.
9. Warranty and Support
For detailed warranty information and technical support, please refer to the complete user manual or contact DATOUBOSS Official Store. The full user manual (PDF) can be accessed here.
