Allen-Bradley 1794-TB3 FLEX I/O 3-Wire Screw Clamp Terminal Base

FAQ

Q1. What is the main function of 1794-TB3?
It is a terminal base used to connect field wiring to FLEX I/O modules and form the system backplane.

Q2. Does it process signals or logic?
No, it only provides mechanical wiring and electrical connection. All processing is done by the attached I/O module.

Q3. What is FlexBus in this module?
FlexBus is the internal backplane that carries communication and power between the terminal base and I/O module.

Q4. What types of modules can be used with it?
It supports a wide range of FLEX I/O modules including digital, analog, relay, and specialty modules.

Q5. How is wiring connected?
Using screw clamp terminals for secure field wiring connections.

Q6. Can modules be replaced while powered?
Yes, FLEX I/O supports RIUP (Removal and Insertion Under Power) depending on system design.

Q7. What is its voltage and current rating?
Up to 125 VAC/DC and 10 A maximum.

Q8. What is its role in the system?
It serves as the physical and electrical interface between field devices and FLEX I/O modules, enabling modular and expandable I/O architecture.