TB840A ABB | Distributed S800 I/O Module Communication Modem
Manufacturer: ABB
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Part Number: TB840A
Condition：New with Original Package
Product Type: Distributed S800 I/O Module Communication Modem
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description
The ABB TB840A, part number 3BSE037760R1, is a ModuleBus Modem designed for the S800 I/O system, part of ABB’s System 800xA automation platform. It provides a fiber optic interface to the Optical ModuleBus, ensuring high-speed and reliable communication between I/O modules and controllers over long distances.
The TB840A is ideal for redundant configurations, where each module connects to separate optical ModuleBus lines but shares the same electrical ModuleBus, guaranteeing fault tolerance and continuous operation.
Equipped with both electrical and optical ModuleBus interfaces, the modem allows flexible installation and robust data transmission in distributed control systems. It supports up to 12 I/O modules on the electrical ModuleBus and seven clusters on the fiber optic ModuleBus, enabling scalable process automation solutions.
Technical Specifications
| Specification | Details |
|---|---|
| Model Number | TB840A |
| Part Number | 3BSE037760R1 |
| System Compatibility | ABB S800 I/O, System 800xA |
| Function | Fiber optic modem for Optical ModuleBus |
| Interfaces | Electrical ModuleBus, Optical ModuleBus |
| Use Case | Redundant configurations, long-distance communication |
| Max Modules (Electrical Bus) | 12 I/O modules |
| Max Clusters (Optical Bus) | 7 clusters |
| Mounting Type | DIN rail |
| Dimensions (L × W × H) | 160 mm × 160 mm × 120 mm |
| Weight | 0.8 kg |
| Application Areas | Industrial automation, process control, distributed I/O systems |
| Country of Origin | Estonia (EE), India (IN) |
| Customs Tariff Number | 85389091 |
FAQ
Q1: What is the main function of the TB840A?
A1: The TB840A provides a fiber optic interface to the Optical ModuleBus, enabling high-speed communication.
Q2: How many I/O modules can it support?
A2: Up to 12 modules on the electrical ModuleBus and 7 clusters on the fiber optic ModuleBus.
Q3: Can TB840A be used in redundant configurations?
A3: Yes, each module can connect to different optical ModuleBus lines while sharing the same electrical bus.
Q4: What is the mounting type?
A4: The module is DIN rail mountable, allowing secure and easy installation.
Q5: Which systems is it compatible with?
A5: Compatible with ABB S800 I/O and System 800xA platforms.