Allen-Bradley 1734-TB3 POINT I/O Terminal Base Assembly

The Allen-Bradley 1734-TB3, also cataloged as the 1734-TB3 Terminal Base, operates as a dedicated hardware component for field wiring termination and signal routing within POINT I/O 1734 platforms.

Hardware Specifications

Backplane Bus Communication Velocity and Deterministic Networks

• The Allen-Bradley 1734-TB3 establishes high-density physical connections directly interfacing with the POINTBus backplane, maintaining backplane bus communication velocity across EtherNet/IP deterministic networks.
• The two-piece modular structure allows the 12 screw-clamp terminal block to remain wired while replacing adjacent I/O modules, preventing signal interruption across high-density I/O drop configurations.
• Seamless firmware flash compatibility across primary controller racks is preserved due to the fully passive mechanical and electrical passthrough design of the terminal base.

Frequently Asked Questions

Q: What is the mechanical structure of the 1734-TB3, and does it allow module replacement without disconnecting field wiring?

A: The 1734-TB3 is a two-piece assembly consisting of a mounting base and a removable screw-clamp terminal block, enabling module replacement while field wiring remains intact.

Q: How many field wiring connection points are available on the 1734-TB3?

A: The assembly provides 12 dedicated screw-clamp terminals for field power and signal distribution.

Field Installation Guidelines

Mount the 1734-TB3 mounting base securely onto a grounded 35 mm DIN rail connected to earth ground via a low-impedance grounding strap. Strip field conductor ends to standard length before securing wires into the 12 screw-clamp terminals. Route 24 VDC field lines and signal wiring in separate wiring channels away from high-voltage AC feeds or motor drive outputs to avoid electromagnetic interference. Verify that all terminal screws are torqued according to standard specification to prevent loose connections or micro-interruption of field signals.