📝 Description

Used and tested product. Fronius COM-Card (Retrofit) communication interface board, part number 4,070,913, hardware revision V2.0C, designed to integrate compatible photovoltaic inverters into the Fronius DATCOM / Solar Net data monitoring and management system.
The board is compatible with inverters in the Fronius IG Plus series, including the Fronius IG Plus 120 V-3, subject to verification of the configuration and revision specified by the manufacturer. It is used to connect the inverter to the Fronius communication network, enabling data exchange with compatible data acquisition devices, data loggers, and monitoring systems.
The module features two shielded RJ45 ports marked IN and OUT, allowing compatible devices to be connected in a daisy chain. It also incorporates a switching power supply circuit for DATCOM components предусмотрed by the configuration.

⚙️ Main Specifications

• Manufacturer: Fronius International GmbH
• Designation: COM-Card / COM-Card B Retrofit
• Part number: 4,070,913
• Hardware revision: V2.0C
• System family: Fronius DATCOM / Solar Net
• Type: Plug-in electronic communication board
• Communication interface: RS-422
• External connectors: 2 shielded RJ45 ports
• Ports: IN / OUT
• Power supply: Integrated switching circuit
• Installation: Inside a compatible inverter

🔧 Main Functions

• Integrates the inverter into the Fronius Solar Net communication network.
• Transmits operating data to compatible DATCOM devices.
• Allows multiple network components to be connected in a daisy chain.
• Supports plant data acquisition and monitoring.
• Supplies power to compatible DATCOM components according to the intended configuration.

🔌 Purpose and Operation

The COM-Card acts as an interface between the inverter electronics and the Fronius communication system. Once installed in the designated slot, it allows the inverter to connect to other devices on the DATCOM network.

• IN: Communication input from the preceding device.
• OUT: Communication output to the next device.
  The configuration allows multiple compatible devices to be connected to the same network, following the manufacturer's wiring and termination instructions.

🧩 Compatibility

The board is intended for Fronius inverters designed for this interface and the DATCOM / Solar Net system.
Series and models to verify:

• Fronius IG Plus
• Fronius IG Plus 120 V-3
• Other compatible models in the Fronius IG and CL families, depending on the hardware configuration.
  Note: Before purchasing, compare part number 4,070,913, the board revision, and the complete inverter model with the installed replacement part.

🛠️ Applications

• Repair of compatible Fronius photovoltaic inverters.
• Replacement of damaged or defective communication boards.
• Restoration of DATCOM / Solar Net communication.
• Maintenance of photovoltaic systems using earlier-generation Fronius inverters.
• Restoration of connections to compatible data acquisition and monitoring devices.

🛡️ Product Condition

Used board, complete with the metal mounting bracket and connectors visible in the photographs.

📦 Package Contents

• 1 × Fronius COM-Card B Retrofit board.
• Part number: 4,070,913.
• Hardware revision: V2.0C.
• Metal mounting bracket, as shown in the photographs.

🟢 Summary

Fronius COM-Card Retrofit communication interface board, part number 4,070,913, revision V2.0C, used to integrate compatible inverters into the DATCOM / Solar Net monitoring system.
Compatible with the Fronius IG Plus series, including the IG Plus 120 V-3, subject to verification of the configuration specified by the manufacturer. It is a suitable spare part for maintenance and communication restoration in Fronius photovoltaic systems.
Warning: The board includes power supply circuits that may be subject to dangerous voltages. Installation and replacement must be performed by qualified personnel with the equipment disconnected from the power supply.