Allen-Bradley 1794-TB2 FLEX I/O 2-Wire Screw Clamp Terminal Base

FAQ

Q1. What is the 1794-TB2 used for?
It is a terminal base used to mount and wire FLEX I/O modules in an industrial control system.

Q2. Does it contain any I/O logic?
No, it is only a wiring and connection base—all I/O processing is done by the module attached to it.

Q3. What modules is it compatible with?
It supports many FLEX I/O modules, including digital, analog, relay, and specialty modules.

Q4. How is wiring connected?
It uses screw clamp terminals for secure field wiring connections.

Q5. What is FlexBus in this base?
FlexBus is the internal backplane that connects the terminal base to the I/O module for communication and power.

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

Q7. What voltage level does it support?
It supports wiring up to 125 V AC/DC, 10 A max rating.

Q8. What is its role in a FLEX I/O system?
It acts as the physical interface between field wiring and the I/O module, enabling modular expansion.

1794-TB2 Allen Bradley

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