Product Overview
The ABB TB842 (3BSE022464R1) is a ModuleBus Optical Port module designed to bridge the gap between CI801 or CI840/CI840A FCI controllers and the TB820/TB820V2/TB840/TB840A ModuleBus modems of an I/O cluster or ABB drives units. It enables communication over an Optical ModuleBus, ensuring reliable data transfer in demanding industrial environments.
With support for both simplex and duplex optical configurations, the TB842 offers flexibility in network topology. In simplex mode, nodes connect in a ring; in duplex mode, they connect in a row. The module includes a fiber optic connector and a connection to the communication interface module.
Technical Specifications
The ABB TB842 delivers robust performance with the following key specifications:
| Parameter |
Value |
| Article Number |
3BSE022464R1 |
| Communication Protocol |
Modulebus |
| Data Rate |
Up to 10 Mbit/s |
| Connector Type |
Agilent’s (former Hewlett-Packard) Versatile Link |
| 24 V Consumption |
Typ. 20 mA |
| Power Dissipation |
0.5 W |
| Operating Temperature |
0 to +55 °C (+32 to +131 °F) |
| Storage Temperature |
-40 to +70 °C (-40 to +158 °F) |
| Relative Humidity |
5 to 95 % non-condensing |
| Ingress Protection |
IP20 (IEC 60529) |
| Dimensions (W x H x D) |
17.6 mm x 56.7 mm x 42.3 mm (0.69” x 2.23” x 1.67”) |
| Weight |
90 g (0.20 lbs.) |
The module supports both plastic and HCS (Hard Clad Silica) fiber optic cables, provided they use the same Versatile Link connector type. All nodes on a Modulebus must have identical transmitter/receiver types to ensure proper communication.
Key Features & Benefits
- One fiber optic port for Optical ModuleBus expansion
- Compatible with CI801 and CI840/CI840A
- Line redundancy: Yes
- Module redundancy: Yes
- Hot Swap: Yes
- Mounting: Vertical or Horizontal
- CE marked, cULus Hazardous Location Class 1 Zone 2, ATEX Zone 2
- Marine certifications: ABS, BV, DNV-GL, LR
Installation & Setup
When installing the ABB TB842, ensure the fiber optic connections are clean and securely seated. For simplex configurations, verify the ring topology is closed correctly. For duplex configurations, check that the row connections are properly terminated. The module can be mounted vertically or horizontally, but note that the maximum ambient temperature is 40 °C for vertical mounting, compared to 55 °C for horizontal mounting.
Compatibility & Integration
The TB842 integrates seamlessly with ABB’s CI801 and CI840/CI840A FCI modules. It connects to CI801 via TB806, and to CI840/CI840A via TU847 and TB806 for single I/O, or via TU846 and TB846 for redundant I/O. This makes it suitable for both simplex and duplex optical ModuleBus configurations.
Selection Guide
Before purchasing, verify that your system requires the ABB TB842 for Optical ModuleBus communication. Check the fiber type (plastic or HCS) and connector compatibility with your existing infrastructure. Ensure the transmitter/receiver type matches on all nodes. For reliable sourcing, consider PLC Source PRO as your trusted supplier for genuine ABB automation spares.