Allen-Bradley 1734-TB POINT I/O Terminal Base

Allen-Bradley 1734-TB POINT I/O Terminal Base Configured for wiring termination and backplane connectivity in POINT I/O systems, the Allen-Bradley 1734-TB (1734-TB Terminal Base) provides direct electrical execution. The terminal base accepts removable IEC screw-clamp terminations and interfaces field wiring with compatible POINT I/O modules through the POINTBus backplane architecture. Suffix Breakdown & Model Matrix The supplied documentation identifies a single catalog number, 1734-TB. No official suffix breakdown or ordering matrix is specified in the provided data. Hardware Specifications Parameter Specification Model 1734-TB Brand Allen-Bradley Product Type POINT I/O Terminal Base Product Family POINT I/O Terminal Style 8 Screw-Clamp Terminals Mounting Style DIN Rail Mounted Body Style Open Style POINTBus Current (Max) 75 mA Backplane Supply Voltage 5 VDC Field Power Input Range 10-28.8 VDC, 220 mA, Class 2 Isolation Voltage 50 V, tested at 1500 VAC for 60 s Power Dissipation 1.86 W @ 750 ohm load; 2.15 W @ 0 ohm load Thermal Dissipation 6.34 BTU/hr @ 750 ohm load; 7.33 BTU/hr @ 0 ohm load Wire Size 0.25-2.5 mm2 (23-13 AWG) Wire Type Shielded Copper, Solid or Stranded Dimensions 56.0 x 12.0 x 75.5 mm Weight 36.9 g Enclosure Rating Open Style Temperature Code T4 Origin Rockwell Automation Manufacturing Power Consumption Up to 2.15 W EtherNet/IP and I/O Density Scaling Considerations Within POINT I/O architectures, the 1734-TB serves as the physical termination interface between field conductors and installed I/O electronics. The terminal base does not execute application logic or network protocol processing; instead, it provides the mechanical and electrical connection path required for modular I/O density scaling. Proper terminal-base selection must match the installed POINT I/O module type to maintain backplane continuity and field wiring integrity. Frequently Asked Questions Q: Does the 1734-TB support hot replacement of field wiring assemblies? A: The terminal block is removable, allowing field wiring to remain terminated while a compatible POINT I/O module is removed or replaced. Follow system-specific maintenance procedures before performing module replacement. Q: What backplane load does the terminal base place on the POINTBus? A: The specified maximum POINTBus current requirement is 75 mA. Q: What conductor types can be terminated on the 1734-TB? A: The terminal base supports shielded copper conductors, either solid or stranded, from 0.25 mm2 to 2.5 mm2 (23-13 AWG). Field Installation Guidelines Mount the terminal base on a properly grounded DIN rail before installing the associated I/O module. Verify that field power wiring remains within the specified 10-28.8 VDC range. Use shielded copper conductors and terminate cable shields according to plant grounding practices. Separate low-level signal wiring from high-current power conductors to reduce conducted noise. Tighten screw-clamp terminals according to manufacturer installation procedures. Confirm terminal assignment before energizing the field circuit. Inspect the removable terminal assembly for secure engagement with the installed POINT I/O module. Maintain adequate clearance around the assembly to support heat dissipation and service access.