ABB TB840A 3BSE037760R1 Modulebus Cluster Modem in stock

ABB TB840A 3BSE037760R1 is an optical Modulebus cluster modem for ABB S800 I/O system under System 800xA platform. It converts electrical Modulebus signal to optical signal for long-distance and redundant fiber communication between controller and I/O cluster.

This modem supports 1+1 redundant fiber bus architecture and hot-swap function, greatly improving communication reliability. Widely used in power, chemical and pulp & paper DCS system maintenance, spare replacement and control system retrofit projects.

Data Parameters

• 1. Brand: ABB.

• 2. Model: TB840A, Part No:3BSE037760R1.

• 3. Product Type: Modulebus Optical Cluster Modem.

• 4. Application: ABB S800 I/O & System 800xA DCS.

• 5. Feature: 1+1 redundant optical Modulebus communication.

• 6. Characteristic: Electrical to fiber optic signal conversion.

• 7. Communication Bus: ABB Modulebus protocol.

• 8. Package: DIN rail mount communication modem.

• 9. Mounting: Installed inside S800 I/O cluster unit.

• 10. Operating Temperature: 0℃ ~ +60℃.

Core Functions

• 1. Convert electrical Modulebus signals into optical signals for fiber transmission.

• 2. Support dual fiber redundant link to eliminate single point communication failure.

• 3. Connect S800 I/O cluster to CI840 communication interface via optical Modulebus.

• 4. Monitor fiber link status and upload communication fault diagnostic alarms.

• 5. Support hot swap for online replacement without stopping the whole DCS system.

Application Scenarios

• 1. Power plant System800xA S800 I/O communication spare replacement.

• 2. Petrochemical plant redundant fiber Modulebus cabinet maintenance project.

• 3. Pulp and paper mill DCS distributed I/O automation upgrade.

• 4. Heavy industry DCS communication spare parts inventory backup.

• 5. Old S800 optical Modulebus communication channel renewal and retrofit.

FAQ

• 1. Q: What is ABB TB840A 3BSE037760R1?
      A: It is S800 I/O optical cluster modem, used for fiber optic redundant Modulebus communication for 800xA DCS system.

• 2. Q: What is the main advantage of TB840A?
      A: It uses fiber transmission with 1+1 redundancy, strong anti-interference and supports hot swap for online maintenance.

• 3. Q: Can it be hot swapped?
      A: Yes, hot swap is supported under normal redundant system configuration.