Allen-Bradley 1715-TADOB8DE | 8-Channel Digital Output Termination

Product Overview

The 1715-TADOB8DE is an 8-channel digital output termination assembly designed for the Allen-Bradley 1715 Redundant I/O system. It interfaces with 1715-OB8DE modules and mounts on 1715-A3IO base units, supporting duplex configurations for high availability and fault-tolerant industrial control.

Technical Specifications

The 1715-TADOB8DE provides eight isolated digital outputs with 24 VDC sourcing. Each channel is protected by a 5 A fuse. Its power supply operates at 24 VDC ±10%, drawing approximately 260 mA from the backplane and dissipating ≤3.6 W of power. The assembly’s isolation voltage is 50 V AC (1-minute continuous), ensuring safety and reliable operation.

Mechanical Design

The termination assembly measures 132 × 84 mm and weighs 260 g. Mounting is flexible, either on a DIN rail or a panel using the 1715-A3IO base unit. The module accommodates flathead screws with 0.4 × 2.0 mm width and torque up to 0.5 N·m (0.37 lb·ft). Conformal coating conforms to ANSI/ISA-S71.04 Class G1–G3 standards, enhancing durability in industrial environments.

Environmental and Compliance

The 1715-TADOB8DE functions reliably within –25°C to +70°C and stores safely between –40°C and +85°C. It supports relative humidity from 5% to 95% non-condensing. Protection is rated at IP20, and the module carries UL, CE, RoHS, ATEX Zone 2, and IECEx certifications. It is manufactured in the USA, ensuring quality and compliance with international safety standards.

Application and Accessories

This assembly enhances system uptime by supporting redundant output modules in critical applications. Compatible accessories include shielded output cables, diagnostic software, and slot filler covers (1715-N2S/N2T) to simplify installation and maintenance. The 1715-TADOB8DE ensures reliable communication and seamless operation within the 1715 Redundant I/O system.