
Product Description
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
Attribute | Details |
---|---|
Article Number | 3BSE037760R1 |
Communication Protocol | ModuleBus |
Redundancy | - Line: Yes |
| Power Consumption | 24 V (typ. 120 mA) |
| Hot Swap | Yes |
| Compatibility | Used with HI Controllers |
Environmental and Certification Details
Attribute | Details |
---|---|
Operating Temperature | 0 to +55 °C (+32 to +131 °F) |
Storage Temperature | -40 to +70 °C (-40 to +158 °F) |
Relative Humidity | 5–95% (non-condensing) |
Corrosion Protection | ISA-S71.04: G3 |
Pollution Degree | Degree 2 (IEC 60664-1) |
Ingress Protection | IP20 (EN 60529) |
Compliance | - CE Marking |
| Hazardous Location Approvals | - C1 Div 2 cULus
| - C1 Zone 2 cULus
| - ATEX Zone 2 |
| Marine Certifications | ABS, BV, DNV-GL, LR |
Mechanical Details
Attribute | Value |
---|---|
Width | 54 mm (2.13 in.) |
Height | 119 mm (4.69 in.) |
Depth | 96 mm (3.78 in.) |
Weight | 0.2 kg (0.44 lbs.) |
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.