Original SMA B5GCOM20.BG2 Logic Control Board complete with integrated LCD display, designed for photovoltaic inverters of the SMA Sunny Tripower STP 15000TL-10 series.

This electronic module manages the inverter’s control, monitoring, and user interface functions, providing real-time visualization of operating data and allowing navigation of system parameters through the integrated LCD display.

The board serves as the central processing and management unit of the inverter, handling information from the power stages, controlling operational functions, and coordinating communication between the various internal modules.

It is an ideal replacement part for repairing SMA inverters affected by display failures, communication issues, or logic board malfunctions.

⚙️ Main Functions

✔ Centralized inverter control and supervision
✔ LCD display management and user interface functions
✔ Real-time operating data visualization
✔ Alarm and fault indication
✔ Internal communication management between inverter modules
✔ Configuration and monitoring of system parameters
✔ Processing of operational and diagnostic information

🔧 Technical Specifications

• Manufacturer: SMA Solar Technology
• Compatible Inverter: Sunny Tripower STP 15000TL-10
• Board Part Number: B5GCOM20.BG2
• Component Type: Logic Control Board / CPU Board
• Display: Integrated LCD Display
• Function: Control, monitoring, data processing, and user interface management
• Application: Three-phase photovoltaic inverters
• Condition: Used / Refurbished (if applicable)

🔌 Function Within the Inverter

Inside the SMA Sunny Tripower inverter, this board is responsible for:

• Managing the inverter operating logic
• Processing information from internal sensors and subsystems
• Displaying production and diagnostic data
• Handling user interaction through the LCD interface
• Monitoring alarms and operating status
• Coordinating communication between electronic modules
• Supporting startup, monitoring, and diagnostic procedures

👉 This board represents the primary control and user-interface module of the inverter.

📊 Information Displayed

The integrated LCD display allows visualization of:

• Daily energy production
• Total energy yield
• DC input parameters
• AC output parameters
• Grid status information
• Operating status and inverter mode
• Warnings and fault messages
• System configuration parameters

⚠️ Typical Faults and Symptoms

A defective control board may cause:

❗ Blank or unreadable LCD display
❗ Inverter startup failures
❗ Internal communication errors
❗ Missing production data display
❗ Frozen menus or navigation issues
❗ Incorrect status indications
❗ Configuration access problems
❗ Unexpected inverter resets

🚨 Common Faults Potentially Associated

Possible inverter errors related to the logic/display board may include:

• Internal Communication Error
• Display Communication Fault
• Initialization Error
• User Interface Error
• System Monitoring Fault
• CPU Communication Error
• Firmware Fault
• Data Logging Error

(Error descriptions may vary depending on inverter firmware version.)

🛠 Applications

• Repair of SMA Sunny Tripower STP 15000TL-10 inverters
• Replacement of faulty display/control boards
• Restoration of inverter monitoring functions
• Refurbishment of photovoltaic inverters
• Maintenance of commercial and industrial PV systems

🔄 Compatibility

Primarily compatible with:

• SMA Sunny Tripower STP 15000TL-10

May also be compatible with other Sunny Tripower models using the same board reference. Always verify the B5GCOM20.BG2 part number before purchase.

💡 Advantages

✔ Original SMA component
✔ Integrated LCD display included
✔ Restores monitoring and user interface functionality
✔ Supports inverter diagnostics and configuration
✔ Cost-effective alternative to complete inverter replacement
✔ Suitable for professional repair and refurbishment

🟢 Summary

The SMA B5GCOM20.BG2 Logic Control Board is the main control and display module used in Sunny Tripower STP 15000TL-10 photovoltaic inverters. Featuring an integrated LCD display, it manages inverter monitoring, diagnostics, communications, and user interaction, making it a critical component for reliable inverter operation and maintenance.