Allen-Bradley 1715-TASIB16D Termination Assembly

Configured for signal distribution in 1715 Redundant I/O systems, the Allen-Bradley 1715-TASIB16D (1715-TASIB16D Termination Assembly) provides direct physical execution of wiring termination for 16-point simplex digital input signals. This assembly serves as the field-side interface point, routing discrete inputs to the corresponding I/O modules while maintaining signal integrity across the termination interface.

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks & Firmware Flash Compatibility

The 1715-TASIB16D acts as a passive interconnection layer within the 1715 I/O system, which supports deterministic network communication through its associated processor modules. As a termination assembly, it does not execute firmware; however, its physical impedance characteristics are integral to the system's ability to maintain high-speed backplane bus communication velocity. Proper seating and secure terminal connections are required to prevent signal reflection or ground loops, which can otherwise introduce latency or packet jitter in the deterministic network traffic managed by the I/O bus.

Frequently Asked Questions

Q: Is the 1715-TASIB16D compatible with redundant I/O module configurations?

A: This assembly is specifically designed for simplex digital input applications. While the 1715 system supports redundancy, using this assembly limits the connected channel to a simplex configuration. For redundant I/O operation, a matching redundant termination assembly must be utilized.

Q: Can this assembly be replaced while the I/O system is powered?

A: Yes. The 1715 system supports Removal and Insertion Under Power (RIUP) for its I/O components. Ensure all field wiring is clearly labeled and that the process loop is safely managed before unseating the termination assembly to prevent inadvertent state changes in the control logic.

Field Installation Guidelines

• Mounting: Secure the termination assembly onto the system mounting base, ensuring the backplane connectors are fully aligned. Tighten the retaining screws to provide vibration resistance and establish a low-impedance common ground.
• Wiring Practices: Terminate field signal wires according to the point-to-point wiring diagram. Ensure that individual conductors are stripped to the correct length to prevent exposed copper, which can lead to short circuits between adjacent terminals.
• Shielding: For digital input signals susceptible to electromagnetic interference, ensure cable shields are terminated to the designated chassis ground terminal on the assembly to maintain noise immunity.
• Inspection: Periodically verify that all terminal screws remain torqued to the manufacturer's specification. Thermal cycling in control cabinets can loosen connections, leading to high-resistance contacts and intermittent input signal failure.