Basic information
Model: TB840A 3BSE037760R1
Communication protocol: Module bus
dimension
Width: 54 mm (2.13 in)
Height: 119 mm (4.69 in)
Depth: 96 mm (3.78 in)
Weight: 0.2 kg (0.44 lb)
24 V power consumption (typical) : 120 MA

The TB840A 3BSE037760R1 is a comprehensive distributed modular process I/O system that communicates with parent controllers and PLCS via an industry-standard fieldbus. The TB840 ModuleBus modem is an optical fiber interface for an optical fiber ModuleBus. The TB840A is used in a redundant configuration where each module is connected to a different optical module bus, but connected to the same electrical module bus.

The TB840A 3BSE037760R1 modem has electrical and optical Modulebus interfaces, which are logically the same bus. Up to 12 I/O modules can be connected to an electrical ModuleBus and up to 7 clusters can be connected to an optical fiber ModuleBus. Optical fiber interfaces are used for the local distribution of I/O clusters and when more than 12 I/O modules are required in I/O stations.

Characteristics and advantages
Two optical fiber ports to the optical module bus
ModuleBus (electrical) to the I/O module
I/O module bus and power monitoring function
Isolated power supply for the I/O module
TU840, MTU for redundant TB840/TB840A, dual module bus
TU841, MTU for redundant TB840/TB840A, single module bus
The input power is blown

Functions and advantages:
Simplify the system structure, reduce the cost, save the connection line, and make the system clearer.
Simplify the design of hardware and software, shorten the design cycle of products, and make products more competitive.
Easy to expand and update the system, facing the whole industry, has a good versatility.
Application scenario:
Industrial automation: used to connect and control various sensors and actuators to achieve automatic control of equipment.
Mechanical control: Receive the status signal of mechanical equipment in real time, and transmit it to the control system for further processing and monitoring.
Intelligent building: connect and control lighting systems, air conditioning systems, security systems, etc., to achieve intelligent management and control of building systems.