3BSE037760R1 | ABB TB840A Modulebus Cluster Modem

ABB TB840/TB840A ModuleBus Modem

The TB840 and TB840A are advanced ModuleBus Modems that enable communication between S800 I/O systems and parent controllers or PLCs via industry-standard field buses. These devices provide both fiber optic and electrical ModuleBus interfaces, ensuring scalable and reliable distributed I/O connectivity.

Key Features and Benefits

• Dual Fiber Optic Ports:

  • Connects to the optical ModuleBus for extended I/O cluster distribution.

• Electrical ModuleBus Connection:

  • Supports up to 12 I/O modules per bus.

• Redundancy Support:

  • TB840A is optimized for redundancy by linking separate optical ModuleBus lines to the same electrical ModuleBus.

• Supervisory Functions:

  • Monitors I/O ModuleBus and power supply status.

• Isolated Power Supply:

  • Protects I/O modules through isolation.

• Hot Swapping:

  • Enables easy replacement without system downtime.

Technical Specifications

| Power Consumption | 24 V (typ. 120 mA) |
| Hot Swap | Yes |
| Compatibility | Used with HI Controllers |

Environmental and Certification Details

| Hazardous Location Approvals | - C1 Div 2 cULus
| - C1 Zone 2 cULus
| - ATEX Zone 2 |
| Marine Certifications | ABS, BV, DNV-GL, LR |

Mechanical Details

Applications and Use Cases

The TB840/TB840A is designed for:

• Local I/O Cluster Distribution:

  • Ideal for situations requiring more than 12 I/O modules in an I/O station.

• Redundancy Configurations:

  • Ensures seamless operation with redundant I/O systems using TB840A.

• Industrial Automation:

  • Compatible with S800 I/O systems and various HI controllers.

Ordering Information

For more details or purchasing inquiries, visit ABB’s official website or contact authorized distributors.