Allen-Bradley 1715-OB8DE 1715 Redundant I/O Digital Output Module

Description

The 1715-OB8DE is a digital output module designed for high-availability industrial automation applications within the Allen-Bradley 1715 Redundant I/O System. Operating on a backplane supply voltage range of 18…32V DC, the module provides 8 digital output channels for controlling field devices. It interfaces with process control systems using the 1715-A3IO module base unit and either the 1715-TASOB8DE or 1715-TADOB8DE termination assemblies. Built with conformal coating, the module delivers fault-tolerant performance and integrated diagnostics suitable for critical control systems, safety instrumented systems (SIS), and hazardous location applications.

Features

• Provides 8 digital output channels with standard output functionality.
• Integrates directly into the 1715 Redundant I/O System via the 1715-A3IO module base.
• Supports fault-tolerant operation when paired with compatible 1715 termination assemblies.
• Features status indicator LEDs for module health, system readiness, and operational status.
• Operates in harsh environments with conformal coating meeting ANSI/ISA-S71.04-2013 Class G1, G2, and G3 standards.
• Accommodates field-side fused protection on compatible termination assemblies.

Applications

• Oil and gas emergency shutdown (ESD) systems
• Process safety instrumented systems (SIS)
• Power generation plant control
• Chemical and petrochemical production automation
• Critical infrastructure and high-availability process automation

Ordering Information

Technical Specifications

Installation Guidelines

• DIN Rail and Panel Mounting: Secure the 1715-A3IO base unit to the DIN rail or panel prior to inserting the module. Maintain proper panel clearance for heat dissipation.
• Wiring and Field Connections: Route field wiring using single 0.75…1.5 mm2 (18…16 AWG) solid or stranded copper conductors rated for at least 85 degC. Ensure category 2 conductor routing practices are applied to signal ports.
• Enclosure Requirements: Install the module inside an industrial enclosure providing appropriate protection for open-style equipment in hazardous or harsh environments.
• Power Supply and Fusing: Connect field power within the 18…32V DC range. Ensure the termination assembly fuses (10 A, 125V Type F for I/O; 5 A max, 32V DC for power) are correctly rated prior to energizing.

Compliance and Certifications

• cULus: UL Listed Industrial Control Equipment for US and Canada (UL File E341697); UL Listed for Class I, Division 2 Group A, B, C, D Hazardous Locations (UL File E251761).
• CE: European Union 2014/30/EC EMC Directive, compliant with EN 61326-1 and EN 61131-2.
• C-Tick: Compliant with AS/NZS CISPR 11 for Industrial Emissions.
• Ex / ATEX / UKCA: European Union Directive 2014/34/EU and UK SI 2016:1107; Ex ec IIC T4 Gc (ATEX Cert: 11 ATEX 7928686X, UKCA Cert: UL22UKEX2512X).
• IECEx: Compliant with IEC 60079-0 and IEC 60079-7; II 3G Ex ec IIC T4 Gc (IECEx Cert: IECEx UL 15.0032X).
• KC: Korean Registration of Broadcasting and Communications Equipment.
• Functional Safety: TÜV Certified, capable of SIL 2 according to EN 62061, IEC 61508, and EN 61326-3-1.