Allen Bradley 1715-TADOB8DE 1715 Redundant I/O Digital Output Duplex Termination Assembly

Product Overview

The Allen Bradley 1715-TADOB8DE provides the critical physical interface for the 1715 Redundant I/O platform. This Duplex Digital Output Termination Assembly facilitates the connection between field devices and two 1715-OB8DE modules, enabling fault-tolerant control architectures. It ensures continuous signal delivery to mission-critical actuators, valves, and indicators even during a module failure. We supply this component as 100% Brand New, maintaining the high-integrity standards required for SIL-rated safety and high-availability systems.

Technical Specifications

Engineering Advantages

• High-Availability Architecture: The duplex design allows two 1715-OB8DE digital output modules to operate in parallel. This configuration eliminates single points of failure, ensuring the control system maintains command over field devices during hardware maintenance or unexpected module faults.

• Simplified Field Wiring: The assembly utilizes a clear terminal layout that accepts 18 to 16 AWG wiring. This range accommodates standard industrial-grade conductors, providing robust mechanical connections that resist pull-out in high-vibration environments.

• Thermal Efficiency: By limiting power dissipation to a maximum of 3 Watts, the 1715-TADOB8DE minimizes heat buildup within the I/O chassis. This efficiency allows for higher packing density in control cabinets without compromising the lifespan of adjacent electronic components.

• Secure Mechanical Integration: Tightening the terminal screws to the specified 0.5 N-m torque ensures gas-tight connections. This precision prevents oxidation at the contact points, which often causes intermittent signal loss in corrosive industrial atmospheres.

FAQs

• Is the 1715-TADOB8DE supplied as a new or used unit?

  We offer this product exclusively as 100% Brand New. It arrives in the original manufacturer’s packaging with all factory seals intact, guaranteeing it meets the rigorous reliability demands of redundant I/O applications.

• Which specific output modules does this termination assembly support?

  This assembly specifically supports the 1715-OB8DE digital output modules. It provides the necessary backplane routing to link two of these modules into a single redundant output pair.

• How does the IP20 rating impact installation?

  The IP20 rating provides protection against finger contact and solid objects larger than 12mm. However, you must install the assembly within a secondary enclosure (such as a NEMA 4 or IP66 rated cabinet) if the environment contains moisture, dust, or conductive contaminants.

• Do I need special tools for the terminal connections?

  Standard industrial screwdrivers suffice; however, we strongly recommend using a calibrated torque driver set to 0.5 N-m. Proper torque prevents over-tightening—which damages the terminal block—and under-tightening—which leads to high-resistance connections.