The ABB UNO-DM-6.0-TL-PLUS-B-G photovoltaic inverter is a high-efficiency professional solution designed for residential and commercial solar power systems. Engineered and manufactured in Italy by ABB (now FIMER), this inverter combines reliability, easy installation, and advanced energy management features.
The unit is equipped with an integrated front-mounted LCD display and navigation keypad, allowing immediate access to energy production data, inverter operating status, alarms, and configuration parameters.
Thanks to its two independent MPPT trackers, the inverter can manage two separate photovoltaic strings, maximizing energy production even when solar modules are installed on different roof orientations or are subject to partial shading conditions.
The robust IP65-rated enclosure provides excellent protection against dust and water, making the inverter suitable for both indoor and outdoor installations. Its fanless passive cooling system, based on a high-efficiency aluminum heatsink, ensures silent operation and increased long-term reliability by eliminating moving cooling components.
The ABB UNO-DM series is highly regarded for its build quality, operational stability, and seamless integration into grid-connected photovoltaic systems.
⚙️ Technical Specifications
General Information
- Manufacturer: ABB
- Series: UNO-DM
- Model: UNO-DM-6.0-TL-PLUS-B-G
- Inverter Type: Single-Phase Grid-Tied Photovoltaic Inverter
- Country of Manufacture: Italy
DC Input (Photovoltaic Side)
- Rated Inverter Power: 6000 W
- Maximum DC Input Voltage: 600 VDC
- DC Operating Voltage Range: 90 – 580 VDC
- MPPT Voltage Range: 160 – 480 VDC
- Number of MPPT Trackers: 2 Independent MPPTs
- Maximum Input Current: 2 × 20 A
- Maximum Short-Circuit Current: 2 × 24 A
AC Output (Grid Side)
- Rated Active Power: 6000 W
- Maximum Apparent Power: 6650 VA
- Nominal Grid Voltage: 230 VAC Single-Phase
- Grid Frequency: 50 Hz
- Maximum Output Current: 30 A
- Adjustable Power Factor: 0.1 – 1
Mechanical & Environmental Specifications
- Integrated LCD Display
- Front Navigation Keypad
- Passive Fanless Cooling System
- High-Efficiency Aluminum Heatsink
- Indoor and Outdoor Installation
- Protection Rating: IP65
- Protection Class: Class I
- Operating Temperature: -25°C to +60°C
Connections
- 2 Independent PV String Inputs (IN1 and IN2)
- AC Grid Connection
- Integrated Communication Port for Monitoring and Configuration
🔧 Main Features
✔ 6 kW rated output power
✔ Dual independent MPPT trackers
✔ Integrated LCD display and user interface
✔ Fanless passive cooling design
✔ Silent operation
✔ IP65 protection for outdoor installation
✔ Supports independent photovoltaic strings
✔ High conversion efficiency
✔ Reliable ABB/FIMER technology
✔ Suitable for residential and commercial solar systems
🏠 Recommended Applications
Perfect for:
- Residential photovoltaic systems from 5 to 8 kWp
- Private homes and villas
- Agricultural facilities
- Warehouses and industrial buildings
- Small commercial businesses
- Grid-connected solar installations
- Retrofit and inverter replacement projects
⚠️ Common Faults and Symptoms
Grid Connection Issues
Symptoms:
❗ Grid connection failure
❗ Utility voltage alarms
❗ Inverter remains disconnected from the grid
Possible causes:
- Grid voltage outside permitted limits
- AC wiring faults
- Utility network instability
PV Input Issues
Symptoms:
❗ Reduced power production
❗ DC voltage alarms
❗ Startup failure
Possible causes:
- Incorrect string configuration
- Damaged PV connectors
- Excessive DC voltage
- Wiring faults
Display or Interface Problems
Symptoms:
❗ LCD display not functioning
❗ Missing operating information
❗ Keypad unresponsive
Possible causes:
- Internal power supply faults
- Display module failure
- Communication board issues
Thermal Alarms
Symptoms:
❗ Power derating
❗ Temperature warnings
❗ Automatic shutdown
Possible causes:
- Restricted airflow
- High ambient temperatures
- Internal component aging
Internal Hardware Failures
Symptoms:
❗ Random restarts
❗ Fault messages
❗ Inverter shutdown
Possible causes:
- Aging capacitors
- Power supply failures
- Control board faults
- Surge or lightning damage
🚨 Possible Associated Errors
A malfunctioning inverter may generate alarms such as:
- Grid Fault
- No Grid
- Grid Voltage High
- Grid Voltage Low
- Grid Frequency Error
- Isolation Fault
- Ground Fault
- DC Input Error
- Overtemperature
- Internal Error
- Communication Error
- Power Stage Fault
- Hardware Failure
- MPPT Fault
Actual fault messages may vary according to firmware version and local grid requirements.
📦 Product Condition
- Used inverter
- Complete with original LCD display and front control panel
- Normal cosmetic signs of previous use
- Heatsink, enclosure, and connectors as shown in the photographs
- Suitable as a replacement unit, spare part, or for compatible photovoltaic installations
✅ Advantages
✔ Original ABB / FIMER inverter
✔ Dual MPPT technology for optimized energy production
✔ Integrated LCD monitoring and diagnostics
✔ Fanless cooling for silent operation
✔ IP65 protection for indoor and outdoor installation
✔ Reliable long-term performance
✔ Easy maintenance and configuration
✔ Ideal for residential and commercial applications
✔ Made in Italy quality and engineering
🟢 Summary
The ABB UNO-DM-6.0-TL-PLUS-B-G is a 6 kW single-phase photovoltaic inverter featuring dual independent MPPT trackers, an integrated LCD display, fanless passive cooling, and IP65 protection. Designed and manufactured in Italy by ABB, it delivers reliable energy conversion, advanced monitoring capabilities, and optimized performance for residential and commercial solar installations.
