Product Short Description

Product Introduction

The ABB TB820V2 is a dedicated optical communication modem designed for the ABB S800 I/O distributed modular process I/O system, serving as a critical interface between electrical and fiber-optic ModuleBus networks. It functions as a slave device on the ModuleBus, enabling long-distance, noise-immune communication between I/O clusters and parent controllers (such as ABB 800xA DCS or PLC systems). This non-redundant modem bridges local electrical I/O modules and remote fiber-optic I/O clusters, supporting scalable I/O expansion beyond the limits of a single electrical bus segment. It integrates supervisory monitoring for the ModuleBus and power supply, plus isolated power distribution to connected I/O modules, ensuring stable and reliable operation in industrial automation environments.

Description

Technical Specifications

Core Communication Specifications

  • Product Type: ModuleBus Optical Cluster Modem (S800 I/O Series)
  • Order Code: TB820V2 (3BSE013208R0001)
  • Communication Protocol: ModuleBus (proprietary S800 I/O bus)
  • Device Role: Slave device on ModuleBus
  • Optical Interface: 2 fiber-optic ports for optical ModuleBus connection
  • Electrical Interface: Direct connection to electrical ModuleBus for local I/O modules
  • Cluster Addressing: Rotary switch for cluster number selection (1–7) on optical ModuleBus
  • I/O Expansion Capacity:
    • Electrical ModuleBus: Up to 12 I/O modules per segment
    • Optical ModuleBus: Up to 7 I/O clusters per fiber link
  • Redundancy: No line or module redundancy; non-redundant operation only
  • Hot-Swap Support: Not supported

Electrical & Power Specifications

  • Auxiliary Power Supply: 24 VDC (nominal)
  • Power Consumption: Typical 100 mA at 24 VDC
  • Isolated Power Output: Provides isolated power to connected S800 I/O modules
  • Supervisory Functions: Monitors ModuleBus status and power supply health

Mechanical & Physical Specifications

  • Dimensions (W × H × D): 58 mm × 170 mm × 122 mm
  • Net Weight: Approximately 0.3 kg
  • Mounting: DIN-rail mounting for standard control cabinets
  • Termination: Requires separate TB807 ModuleBus terminator (not included)

Environmental & Compliance Specifications

  • Operating Temperature: +5 °C to +55 °C (certified range); 0 °C to +55 °C (operating range)
  • Storage Temperature: -40 °C to +70 °C
  • Humidity: 5%–95% RH, non-condensing
  • Protection Class: IP20 (front/rear)
  • Pollution Degree: 2 (IEC 60664-1)
  • Certifications:
    • Safety: EN 61010-1, UL 61010-1
    • Hazardous Areas: C1 Div 2, cULus
    • Marine: ABS, BV (ship classification)
    • Environmental: RoHS, WEEE compliant

Key Features

Dual-Bus Interface Integration

  • Electrical-Optical Bridge: Seamlessly converts electrical ModuleBus signals to fiber-optic, extending communication range and immunity to electromagnetic interference (EMI).
  • Cluster Addressing: Rotary switch enables easy configuration of unique cluster IDs (1–7) for multi-cluster optical networks.
  • Scalable Expansion: Supports up to 7 remote I/O clusters via fiber, significantly increasing system I/O capacity beyond local electrical bus limits.

Integrated Supervision & Power

  • ModuleBus Monitoring: Real-time supervision of bus communication integrity and fault detection.
  • Power Supply Monitoring: Tracks input power and provides fault indication for connected I/O modules.
  • Isolated Power Distribution: Delivers galvanically isolated power to downstream I/O modules, enhancing system safety and noise rejection.

Industrial-Grade Reliability

  • EMI Immunity: Fiber-optic communication eliminates electrical noise interference in harsh industrial environments.
  • Wide Environmental Tolerance: Operates reliably across certified temperature and humidity ranges for industrial deployment.
  • Global Compliance: Meets international safety, hazardous area, and marine standards for worldwide application.

Simplified Installation & Compatibility

  • DIN-Rail Mount: Standard mounting for quick integration into control cabinets.
  • S800 I/O Compatibility: Fully compatible with all S800 I/O digital/analog input/output modules.
  • Retrofit Support: Direct replacement for legacy TB820 modems (3BSE008555R1, 3BSE013246R1).

Application Scenarios

Process Automation Systems

  • Oil & Gas Refineries: Connects remote I/O clusters for monitoring pumps, valves, and process variables in hazardous areas.
  • Chemical Plants: Enables long-distance I/O communication for reactor control and safety instrumented systems (SIS).
  • Petrochemical Facilities: Supports distributed I/O for distillation columns and pipeline monitoring.
  • Pharmaceutical Manufacturing: Provides noise-immune communication for cleanroom process control and batch automation.

Power Generation & Utilities

  • Thermal Power Plants: Links remote I/O for boiler, turbine, and auxiliary system monitoring.
  • Hydroelectric Plants: Extends I/O communication for dam control and turbine monitoring.
  • Water & Wastewater Treatment: Connects remote sensor and actuator clusters for filtration and pumping systems.
  • Renewable Energy Plants: Supports I/O expansion for wind farm and solar farm monitoring and control.

Manufacturing & Industrial Production

  • Automotive Assembly: Integrates remote I/O for robotic welding, painting, and assembly line control.
  • Metal Processing: Enables long-distance I/O for rolling mills, furnaces, and material handling.
  • Food & Beverage: Provides reliable communication for packaging, bottling, and processing lines.
  • Pulp & Paper Mills: Connects distributed I/O for paper machine control and quality monitoring.

Marine & Offshore Applications

  • Offshore Drilling Platforms: Supports I/O expansion for topside process control in harsh marine environments.
  • Shipboard Automation: Used for vessel propulsion, auxiliary power, and cargo handling system I/O communication.
  • LNG Carriers: Ensures stable I/O communication for cryogenic processing and storage systems.

Infrastructure & Building Automation

  • Large-Scale Facilities: Extends I/O for HVAC, lighting, and security systems in commercial buildings.
  • Airport & Transportation: Connects remote I/O for baggage handling, runway lighting, and signaling systems.
  • Data Centers: Supports distributed I/O for cooling, power distribution, and environmental monitoring.

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