ABB TB820V2 Modular Bus Trunk Modem

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ABB TB820V2 Modular Bus Trunk Modem

Core Product Information

1. Communication Protocol Support
   As an optical cluster modem, the TB820V2 is primarily used in non-redundant operation scenarios and supports the Modbus RTU protocol for stable data interaction between different devices. It accurately parses and transmits data from industrial equipment, ensuring precision and integrity to meet the rigorous requirements of industrial automation.
2. Electrical Connection Features

• Equipped with two SC fiber optic connectors for connecting fiber cables, providing a reliable physical link for long-distance communication and enhancing signal stability and anti-interference capabilities.
• Features a DB9 connector for Modbus RTU bus connection, enabling quick docking with other compatible devices to build a complete communication network.

3. Power Specifications
   Powered by 24VDC (a common industrial DC power supply), it ensures stable operation in various industrial environments with low power consumption, reducing the overall system energy burden.
4. Data Transmission Performance

• Maximum data transmission rate: 9.6kbps, meeting the communication speed requirements of most industrial devices while ensuring timeliness.
• Supports cable connection up to 2km, expanding communication coverage for large industrial plants and remote distributed devices.

Key Product Attributes

1. Physical Specifications

• Dimensions: 17cm × 12cm × 5.8cm (L×W×H), compact enough for flexible installation in limited-space control cabinets.
• Weight: 0.34kg, convenient for installation and handling in new system setups or retrofits.
• Rugged housing material with dust and impact resistance (suitable for general industrial environments, though protection level is unspecified).

2. Certifications
   CE and UL certified, complying with international safety, health, and environmental standards, ensuring electrical safety and EMC compatibility for global industrial applications.
3. Compatibility and Expandability
   As part of ABB's S800 I/O series, the TB820V2 is fully compatible with other modules in the series and controllers like ABB's AC 800M. Its standardized interface also supports communication with third-party devices adhering to Modbus RTU, enabling open and diversified industrial automation networks.
4. Maintenance Convenience

• Hot-swappable design allows module replacement without system shutdown, minimizing production downtime.
• Status indicator lights display real-time communication, power, and fault information for quick on-site troubleshooting.

Core Functions

1. Protocol Conversion
   Realtime conversion between Modbus RTU protocol data and optical fiber signals, resolving compatibility issues between different communication media and protocols for efficient device interconnection.
2. Data Relaying and Extension
   Acts as a data repeater to extend signal transmission distance beyond traditional cable limits, ensuring stable long-distance data transmission and expanding network coverage in large-scale automation projects.
3. Industrial Automation Connectivity
   Designed for industrial automation scenarios, it applies to manufacturing production lines, process control devices, substation monitoring systems, rail transit signal control, etc. By connecting sensors, actuators, and controllers, it enables rapid data collection, transmission, and control command delivery, supporting production efficiency and intelligent upgrading.